FAMILY OWNED SINCE 1984 - 2021 SEED BOOK - Four Star Seed
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FAMILY OWNED S I N C E 1984 2021 SEED BOOK
TABLE OF CONTENTS
CORN PRODUCTS ........................................................................ 3
CORN CHART ............................................................................... 10
SOYBEAN PRODUCTS ................................................................ 11
SOYBEAN CHART ....................................................................... 14
FORAGES AND SMALL SEED .................................................. 15
THINK BEFORE YOU BIN-RUN .............................................. 16
PLANTING GUIDE ....................................................................... 17
1
FOUR STAR SEED COMPANY
Four Star Seed Company is a Midwestern, farm-family owned, independent seed company based in
Western Iowa. Since our start in 1984, we have built our foundation on elite genetics and technology,
field performance, and dedication to our customers. Over the years, our foundation has only
become stronger.
Agriculture is an ever-changing industry, with new challenges around every corner. Unlike large,
national brands, we are able to quickly adapt our business, products, and services to meet these
challenges, so our customers are maximizing profits on every acre.
Field performance is extremely important to us. Because we are a farming-family, we understand
better than most companies what performance means to the bottom line in maximizing your profits.
We do extensive research and testing before our product is in the customer’s hands, so we can say
with absolute confidence how our products will perform on your farm.
Our dedication to our customers and industry is second to none. We have devoted ourselves to
making sure our customers have access to the best services, knowledge, and products available on
the market today and years from now. Our customers’ needs are top priority, no matter how big or
small the operation. Our focus is to help our customers build a profitable, sustainable business that
can be passed to future generations.
Finally, thank you to all our customers for your past and future business. You are important to us and
we greatly appreciate you for choosing the Four Star family for all your seed needs.
2
CORN PRODUCTS
F O U R S TA R S E E D
CORN PRODUCTS
100 - 114 D AY M AT U R I T I E S
SmartStax® RIB Complete® Corn Blend
and
VT Double PRO® RIB Complete® Corn Blend
All SmartStax® Corn is treated with Poncho® Votivo® Seed
Treatment for maximum secondary pest protection.
= NATURAL DROUGHT TOLERANCE
SmartStax® RIB Complete® VT Double PRO® RIB Complete®
Corn Blend Corn Blend
SmartStax® RIB Complete® Corn Blend is a VT Double PRO® RIB Complete® Corn Blend
mix of 95% Bt. traited, 5% refuge seed. You get is a mix of 95% traited and 5% refuge seed. With
all the benefits of SmartStax® technology, plus refuge-in-a-bag, there’s no need to calculate or
the convenience of 5% refuge seed interspersed plant separate, structured refuge in the Corn-
in every bag. It has proven to have a 10 bu/A Growing Area. It contains dual modes of action
advantage over non-Bt. traited corn and a 20 for maximum protection against corn earworm
bu/A advantage over non-Bt. treated corn + a soil- and other above-ground pests, like European and
applied insecticide. Southwestern corn borers and fall armyworm.
3 2021 SEED BOOK
CORN PRODUCTS
4 STAR 6S17 SS RIB
• 100 Day PLANT HEIGHT Tall EARLY VIGOR 2.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Very Good
Very good stalks and roots ROOT STRENGTH 2.5
• Appealing fall appearance and intactness FUNGICIDE Corn on Corn NO-TILL 2.0
• Impressive top-end yield potential
• Good stalk anthracnose tolerance carries the ASR gene EAR HEIGHT Medium/High DROUGHT TOLERANCE 2.0
• Good Goss' Wilt rating COB COLOR Red
CORN ON CORN 2.0
• Dual-purpose potential PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2412 TAR SPOT 4.0
4 STAR 6S19 SS RIB
• 101 Day PLANT HEIGHT Medium EARLY VIGOR 1.5
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Very Good
Excellent yield potential under low to high yield environments with good ear tip fill ROOT STRENGTH 1.0
• Medium plant height with excellent drought tolerance FUNGICIDE Corn on Corn NO-TILL 2.0
• Excellent stalk and rooting strength
• Good stalk anthracnose tolerance carries the ASR gene EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Works across tough, variable, and ideal yield environments COB COLOR Red
CORN ON CORN 1.5
• Has open flared husk to aid in dry down PLANT HEALTH 2.0
• Good emergence and early vigor EAR TYPE Semi-Determinate
TEST WEIGHT 2.0
• Caution using Growth Regulators herbicide family GDUS TO BLACK LAYER 2380 TAR SPOT 4.0
4 STAR 6S21 SS RIB NEW!
• 103 Day PLANT HEIGHT Medium EARLY VIGOR 1.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.5
• DRY DOWN Excellent
Excellent movement across the Corn Belt north to south ROOT STRENGTH 2.5
• Strong response to irrigation with excellent Goss' Wilt tolerance FUNGICIDE Yes NO-TILL 1.0
• Highly competitive throughout all yield environments
• Responds well to high management operations EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Excellent early plant vigor and drought stress tolerance COB COLOR Red
CORN ON CORN 1.5
• Very good greensnap tolerance and has ASR gene PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.2
GDUS TO BLACK LAYER 2520 TAR SPOT 3.2
4 STAR 6S26 SS RIB
• 104 Day PLANT HEIGHT Tall EARLY VIGOR 2.5
• SmartStax® RIB Complete® Corn Blend
DRY DOWN Very Good STALK STRENGTH 2.5
• Moves south as an early hybrid with early harvest
• Strong response to irrigation with good Goss' Wilt tolerance ROOT STRENGTH 2.0
FUNGICIDE Corn on Corn
• Best performance on farms with above average drainage NO-TILL 2.0
• Very strong yield potential across a wide range of yield environments EAR HEIGHT Medium/High
DROUGHT TOLERANCE 2.5
• Responds to higher management COB COLOR Pink
CORN ON CORN 2.0
EAR TYPE Semi-Determinate PLANT HEALTH 2.5
GDUS TO BLACK LAYER 2528 TEST WEIGHT 1.0
SCALE: 1 = BEST, 9 = WORST 4
CORN PRODUCTS
4 STAR 6S30 SS RIB
• 106 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 3.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Great emergence and seedling vigor ROOT STRENGTH 3.0
• Very strong yield potential across a wide range of yield environments FUNGICIDE Corn on Corn NO-TILL 2.0
• Very strong agronomics, including low risk to greensnap
• Very strong Goss' Wilt ratings EAR HEIGHT Medium/High DROUGHT TOLERANCE 2.0
• Responds to high management and moderate seed populations COB COLOR Red
CORN ON CORN 2.0
PLANT HEALTH 2.0
EAR TYPE Semi-Determinate
TEST WEIGHT 1.0
GDUS TO BLACK LAYER 2550 TAR SPOT 5.0
4 STAR 6S37 SS RIB
• 107 Day PLANT HEIGHT Medium EARLY VIGOR 2.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Excellent stalk, root, Goss' Wilt, and greensnap ratings ROOT STRENGTH 2.0
• Great early season vigor - outstanding no-till option FUNGICIDE Corn on Corn NO-TILL 2.0
• Very good ability to move north to south for RM
• Attractive appearance and very good late season intactness EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Exceptional test weight and grain quality COB COLOR Red
CORN ON CORN 1.0
• Caution using Growth Regulators herbicide family PLANT HEALTH 2.0
EAR TYPE Semi-Determinate
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2558 TAR SPOT 4.0
4 STAR 6S61 SS RIB
• 110 Day PLANT HEIGHT Medium EARLY VIGOR 1.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Excellent roots and very good stalks ROOT STRENGTH 1.0
• Very strong agronomics, including low risk to greensnap FUNGICIDE Corn on Corn NO-TILL 2.0
• Big-time yield potential with consistent performance over a wide range of soil
types and yield environments EAR HEIGHT Medium DROUGHT TOLERANCE 2.5
• Good stalk anthracnose tolerance carries the ASR gene CORN ON CORN 2.0
COB COLOR Red
• Very good seedling vigor for early planting or no-till practices PLANT HEALTH 2.0
EAR TYPE Semi-Determinate
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2590 TAR SPOT 3.2
4 STAR 6S64 SS RIB
• 110 Day PLANT HEIGHT Medium EARLY VIGOR 2.5
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Widely adapted east to west ROOT STRENGTH 1.5
• Tremendous stalk and root strength FUNGICIDE Corn on Corn NO-TILL 2.0
• Consistent ear size with good test weight
• Excellent Goss' Wilt tolerance EAR HEIGHT Medium DROUGHT TOLERANCE 2.5
• Good stalk anthracnose tolerance carries the ASR gene COB COLOR Red
CORN ON CORN 2.0
• Low greensnap risk PLANT HEALTH 2.0
EAR TYPE Semi-Determinate
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2626 TAR SPOT 4.0
5 2021 SEED BOOK
CORN PRODUCTS
4 STAR 6S65 SS RIB
• 110 Day PLANT HEIGHT Medium EARLY VIGOR 2.5
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.5
• DRY DOWN Very Good
Very strong yield potential across a wide range of yield environments ROOT STRENGTH 3.0
• Very good ability to move north to south for RM FUNGICIDE Corn on Corn NO-TILL 2.0
• Wide adaptability for planting populations with good ear flex
• Very good yield response to irrigation EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Impressive stress and drought tolerance COB COLOR Red
CORN ON CORN 2.0
PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 3.0
GDUS TO BLACK LAYER 2585 TAR SPOT 4.0
4 STAR 6S74 SS RIB
• 112 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 2.0
• SmartStax® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Widely adapted east to west ROOT STRENGTH 2.0
• Tremendous stalk and root strength FUNGICIDE Corn on Corn NO-TILL 1.0
• Very good Goss' Wilt tolerance
• Responds to high management EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Consistent performance over a wide range of soil types COB COLOR Red
CORN ON CORN 2.0
• Good stalk anthracnose tolerance carries the ASR gene PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 1.0
GDUS TO BLACK LAYER 2655 TAR SPOT 3.2
4 STAR 6D16 VT2P RIB NEW!
• 96 Day PLANT HEIGHT Medium EARLY VIGOR 1.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Very Good
Semi-flex ear type with excellent drought tolerance ROOT STRENGTH 1.5
• Medium plant height with excellent top end yield potential across all soil types FUNGICIDE Corn on Corn NO-TILL 1.0
• Excellent stalk and root strength with excellent greensnap ratings
• Good stalk anthracnose tolerance carries the ASR gene EAR HEIGHT Medium DROUGHT TOLERANCE 1.5
• Works across tough, variable, and ideal yield environments COB COLOR Red
CORN ON CORN 3.0
• Has very good dry down and works north and south out of its maturity zone PLANT HEALTH 2.0
• Great emergence and vigor for early planting and reduced till acres EAR TYPE Semi-Flex
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2360 TAR SPOT 4.0
4 STAR 6D18 VT2P RIB
• 100 Day PLANT HEIGHT Tall EARLY VIGOR 2.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Very Good
Very good stalks and roots ROOT STRENGTH 2.5
• Appealing fall appearance and intactness FUNGICIDE Corn on Corn NO-TILL 2.0
• Impressive top-end yield potential
• Very consistent ear size within row EAR HEIGHT Medium/High DROUGHT TOLERANCE 2.0
• Good Goss' Wilt rating COB COLOR Red
CORN ON CORN 2.0
• Dual-purpose potential PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2415 TAR SPOT 4.0
SCALE: 1 = BEST, 9 = WORST 6
CORN PRODUCTS
4 STAR 6D22 VT2P RIB
• 102 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 1.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Very good stalks and roots with excellent test weight ROOT STRENGTH 1.5
• Excellent early vigor for minimum tillage and early planting FUNGICIDE Corn on Corn NO-TILL 1.0
• Widely adapted product with excellent Goss' Wilt tolerance and low greensnap risk
• Excellent stalk and root ratings EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Long ears with good kernel depth, great fall appearance COB COLOR Red
CORN ON CORN 2.0
• Caution using Sulfonylureas herbicide family PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2417 TAR SPOT 4.0
4 STAR 6D33 VT2P RIB NEW!
• 104 Day PLANT HEIGHT Medium EARLY VIGOR 1.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.5
• DRY DOWN Excellent
Excellent movement across the Corn Belt north to south ROOT STRENGTH 2.5
• Strong response to irrigation with excellent Goss' Wilt tolerance FUNGICIDE Yes NO-TILL 1.0
• Highly competitive throughout all yield environments
• Responds well to high management operations EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Excellent early plant vigor and drought stress tolerance COB COLOR Red
CORN ON CORN 1.5
• Very good greensnap tolerance and has ASR gene PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.2
GDUS TO BLACK LAYER 2520 TAR SPOT 3.2
4 STAR 6D41 VT2P RIB
• 107 Day PLANT HEIGHT Medium EARLY VIGOR 2.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 3.0
• DRY DOWN Good
Great emergence and seedling vigor ROOT STRENGTH 2.0
• Very strong yield potential across a wide range of yield environments FUNGICIDE Corn on Corn NO-TILL 2.0
• Impressive stress and drought tolerance
• Very strong agronomics, including low risk to greensnap EAR HEIGHT Medium DROUGHT TOLERANCE 2.5
• Very strong rooting strength COB COLOR Pink
CORN ON CORN 2.0
PLANT HEALTH 3.0
EAR TYPE Semi-Flex
TEST WEIGHT 3.0
GDUS TO BLACK LAYER 2448 TAR SPOT 4.0
4 STAR 6D47 VT2P RIB
• 109 Day PLANT HEIGHT Medium EARLY VIGOR 1.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Very Good
Excellent roots and very good stalks ROOT STRENGTH 1.0
• Very strong agronomics, including low risk to greensnap FUNGICIDE Corn on Corn NO-TILL 2.0
• Big-time yield potential with consistent performance over a wide range of soil
types and yield environments EAR HEIGHT Medium DROUGHT TOLERANCE 2.5
• Good stalk anthracnose tolerance carries ASR gene CORN ON CORN 2.0
COB COLOR Red
• Very good seedling vigor for early planting or no-till practices PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2560 TAR SPOT 3.2
7 2021 SEED BOOK
CORN PRODUCTS
4 STAR 6D52 VT2P RIB
• 110 Day PLANT HEIGHT Medium EARLY VIGOR 2.5
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Widely adapted east to west and north to south ROOT STRENGTH 1.5
• Tremendous stalk and root strength FUNGICIDE Corn on Corn NO-TILL 2.0
• Consistent ear size with good test weight
• Excellent Goss' Wilt tolerance EAR HEIGHT Medium DROUGHT TOLERANCE 2.5
• Adapts to all soil types COB COLOR Red
CORN ON CORN 2.0
• Low greensnap risk PLANT HEALTH 2.0
• Very good dry down EAR TYPE Semi-Determinate
TEST WEIGHT 2.0
GDUS TO BLACK LAYER 2600 TAR SPOT 4.0
4 STAR 6D55 VT2P RIB
• 110 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 2.5
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 3.0
• DRY DOWN Very Good
Very strong yield potential across a wide range of yield environments ROOT STRENGTH 3.0
• Very good ability to move north to south for RM FUNGICIDE Corn on Corn NO-TILL 2.0
• Wide adaptability for planting populations with good ear flex
• Impressive stress and drought tolerance EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Very good yield response to irrigation COB COLOR Red
CORN ON CORN 2.0
PLANT HEALTH 1.5
EAR TYPE Semi-Flex
TEST WEIGHT 3.0
GDUS TO BLACK LAYER 2561 TAR SPOT 4.0
4 STAR 6D63 VT2P RIB
• 112 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 2.0
• VT Double PRO® RIB Complete® Corn Blend STALK STRENGTH 2.0
• DRY DOWN Good
Widely adapted east to west ROOT STRENGTH 2.0
• Tremendous stalk and root strength FUNGICIDE Corn on Corn NO-TILL 1.0
• Very good Goss' Wilt tolerance
• Responds to high management EAR HEIGHT Medium DROUGHT TOLERANCE 2.0
• Consistent performance over a wide range of soil types COB COLOR Red
CORN ON CORN 2.0
• Good stalk anthracnose tolerance carries the ASR gene PLANT HEALTH 2.0
EAR TYPE Semi-Flex
TEST WEIGHT 1.0
GDUS TO BLACK LAYER 2655 TAR SPOT 3.2
4 STAR 6D75 VT2P RIB
• 114 Day PLANT HEIGHT Medium EARLY VIGOR 3.0
• VT Double PRO® RIB Complete® Corn Blend
DRY DOWN Fair STALK STRENGTH 2.0
• High-yield potential over a broad range of environments
• Consistent performance across soil types ROOT STRENGTH 3.0
FUNGICIDE No
• Excellent grain quality and test weight NO-TILL 1.5
• Very good drought tolerance EAR HEIGHT Medium
DROUGHT TOLERANCE 2.0
• Good stalk anthracnose tolerance carries the ASR gene COB COLOR Red
• CORN ON CORN 3.0
Caution using Growth Regulators herbicide family
EAR TYPE Semi-Flex PLANT HEALTH 1.0
GDUS TO BLACK LAYER 2832 TEST WEIGHT 1.0
SCALE: 1 = BEST, 9 = WORST 8
CORN PRODUCTS
4 STAR 6D76 VT2P RIB
• 114 Day PLANT HEIGHT Medium-Tall EARLY VIGOR 2.0
• VT Double PRO® RIB Complete® Corn Blend
DRY DOWN Good STALK STRENGTH 1.0
• Semi-flex ear with the ability to work at moderate populations
• Great late season intactness even outside of its maturity zone ROOT STRENGTH 1.0
FUNGICIDE No
• Excellent stalks and roots NO-TILL 1.5
• Outstanding test weight for possible food grade corn EAR HEIGHT Medium/High
DROUGHT TOLERANCE 1.5
• Very strong yield potential across a wide range of soil types COB COLOR Red
• CORN ON CORN 1.0
Good stalk anthracnose tolerance carries the ASR gene
EAR TYPE Semi-Flex PLANT HEALTH 2.0
GDUS TO BLACK LAYER 2779 TEST WEIGHT 1.0
NOTES
9 2021 SEED BOOKCORN CHART
STALK STRENGTH
ROOT STRENGTH
CORN ON CORN
MATURITY DAYS
PLANT HEALTH
PLANT HEIGHT
BLACK LAYER
EARLY VIGOR
TEST WEIGHT
EAR HEIGHT
TOLERANCE
NEW IN 2021
COB COLOR
FUNGICIDE
DRY DOWN
DROUGHT
EAR TYPE
GDUS TO
TAR SPOT
NO-TILL
PRODUCT
4 Star 6S17 SS RIB 100 2.0 2.0 2.5 2.0 2.0 2.0 2.0 2.0 Tall Very Good Corn on Corn Med/High Red Semi-Flex 2412 4.0
4 Star 6S19 SS RIB 101 1.5 2.0 1.0 2.0 2.0 1.5 2.0 2.0 Medium Very Good Corn on Corn Medium Red Semi-Determinate 2380 4.0
4 Star 6S21 SS RIB NEW 103 1.0 2.5 2.5 1.0 2.0 1.5 2.0 2.2 Medium Excellent Yes Medium Red Semi-Flex 2520 3.2
4 Star 6S26 SS RIB 104 2.5 2.5 2.0 2.0 2.5 2.0 2.5 1.0 Tall Very Good Corn on Corn Med/High Pink Semi-Determinate 2528 NA
4 Star 6S30 SS RIB 106 3.0 2.0 3.0 2.0 2.0 2.0 2.0 1.0 Medium-Tall Good Corn on Corn Med/High Red Semi-Determinate 2550 5.0
4 Star 6S37 SS RIB 107 2.0 2.0 2.0 2.0 2.0 1.0 2.0 2.0 Medium Good Corn on Corn Medium Red Semi-Determinate 2558 4.0
4 Star 6S61 SS RIB 110 1.0 2.0 1.0 2.0 2.5 2.0 2.0 2.0 Medium Good Corn on Corn Medium Red Semi-Determinate 2590 3.2
4 Star 6S64 SS RIB 110 2.5 2.0 1.5 2.0 2.5 2.0 2.0 2.0 Medium Good Corn on Corn Medium Red Semi-Determinate 2626 4.0
4 Star 6S65 SS RIB 110 2.5 2.5 3.0 2.0 2.0 2.0 2.0 3.0 Medium Very Good Corn on Corn Medium Red Semi-Flex 2585 4.0
4 Star 6S74 SS RIB 112 2.0 2.0 2.0 1.0 2.0 2.0 2.0 1.0 Medium-Tall Good Corn on Corn Medium Red Semi-Flex 2655 3.2
4 Star 6D16 VT2P RIB NEW 96 1.0 2.0 1.5 1.0 1.5 3.0 2.0 2.0 Medium Very Good Corn on Corn Medium Red Semi-Flex 2360 4.0
4 Star 6D18 VT2P RIB 100 2.0 2.0 2.5 2.0 2.0 2.0 2.0 2.0 Tall Very Good Corn on Corn Med/High Red Semi-Flex 2415 4.0
4 Star 6D22 VT2P RIB 102 1.0 2.0 1.5 1.0 2.0 2.0 2.0 2.0 Medium-Tall Good Corn on Corn Medium Red Semi-Flex 2417 4.0
4 Star 6D33 VT2P RIB NEW 104 1.0 2.5 2.5 1.0 2.0 1.5 2.0 2.2 Medium Excellent Yes Medium Red Semi-Flex 2520 3.2
4 Star 6D41 VT2P RIB 107 2.0 3.0 2.0 2.0 2.5 2.0 3.0 3.0 Medium Good Corn on Corn Medium Pink Semi-Flex 2448 4.0
4 Star 6D47 VT2P RIB 109 1.0 2.0 1.0 2.0 2.5 2.0 2.0 2.0 Medium Very Good Corn on Corn Medium Red Semi-Flex 2560 3.2
4 Star 6D52 VT2P RIB 110 2.5 2.0 1.5 2.0 2.5 2.0 2.0 2.0 Medium Good Corn on Corn Medium Red Semi-Determinate 2600 4.0
4 Star 6D55 VT2P RIB 110 2.5 3.0 3.0 2.0 2.0 2.0 1.5 3.0 Medium-Tall Very Good Corn on Corn Medium Red Semi-Flex 2561 4.0
4 Star 6D63 VT2P RIB 112 2.0 2.0 2.0 1.0 2.0 2.0 2.0 1.0 Medium-Tall Good Corn on Corn Medium Red Semi-Flex 2655 3.2
4 Star 6D75 VT2P RIB 114 3.0 2.0 3.0 1.5 2.0 3.0 1.0 1.0 Medium Fair No Medium Red Semi-Flex 2832 NA
4 Star 6D76 VT2P RIB 114 2.0 1.0 1.0 1.5 1.5 1.0 2.0 1.0 Medium-Tall Good No Med/High Red Semi-Flex 2779 NA
SCALE: 1 = BEST, 9 = WORST 10SOYBEAN PRODUCTS No dicamba may be used in-crop with seed in the Roundup Ready® Xtend Crop System unless and until approved or specifically permitted by the U.S. EPA and the appropriate state agency for such use. As of August 21, 2020, no dicamba formulations are
currently registered by the U.S. EPA for in-crop use with seed in the Roundup Ready® Xtend Crop System in the 2021 season. *Additional information on page 13.
F O U R S TA R S E E D
SOYBEAN PRODUCTS
1.9 - 3.0 R E L AT I V E M AT U R I T I E S
We offer a full line of seed treatments for soybeans to fit your
operation. Talk to your sales rep for what is available!
Roundup Ready 2 Xtend® Soybeans
Roundup Ready 2 Xtend® Soybeans are the industry’s first
biotech-stacked soybean trait with both dicamba and glyphosate
herbicide tolerance. Roundup Ready 2 Xtend® is built on the high
yielding Roundup Ready 2 Yield® soybean technology.
Roundup Ready 2 Xtend® Soybeans
Roundup Ready 2 Xtend® Soybeans are built on the high yielding Roundup
Ready 2 Yield® soybean technology. Roundup Ready 2 Xtend® is the industry’s
first biotech-stacked soybean trait with both dicamba and glyphosate herbicide
tolerance. With tolerance to glyphosate and dicamba, farmers will have access to
additional tools to help control glyphosate-resistant broadleaf weeds such as Palmer
amaranth, waterhemp and marestail, along with other tough-to-control broadleaf
weeds such as lambsquarters and velvetleaf. The technology offers the yield and
quality potential that farmers already know and trust from their Roundup Ready 2
Yield® soybeans.
11 2021 SEED BOOKSOYBEAN PRODUCTS
No dicamba may be used in-crop with seed in the Roundup Ready® Xtend Crop System unless and until approved or specifically permitted by the U.S. EPA and the appropriate state agency for such use. As of August 21, 2020, no dicamba formulations are currently registered by the U.S. EPA for in-crop use with seed in the Roundup Ready® Xtend Crop
System in the 2021 season. *Additional information on page 13.
4 STAR 3X192 RR2XTEND
• 1.9 Maturity FLOWER Purple SDS 2.0
• Roundup Ready 2 Xtend® Soybeans
• PUBESCENCE Gray I.D.C. 2.0
Excellent field stress tolerance
• Very good Iron Chlorosis tolerance for IDC-prone soils HILUM Buff PRR TOL. (FIELD RATING) 1.4
• Medium plant height with excellent White Mold ratings
• Terrific emergence scores for no-till or early planting ROW TYPE ALL STANDABILITY 1.5
• SCN resistant HEIGHT Medium SHATTER SCORE 1.4
• Rps 1k+3a PRR gene with great standability
PHYTOPHTHORA GENE Rps 1k+3a EMERGENCE 1.5
SCN PI 88.788 WHITE MOLD 1.8
4 STAR 3X221 RR2XTEND
• 2.2 Maturity FLOWER Purple SDS 2.1
• Roundup Ready 2 Xtend® Soybeans
PUBESCENCE Light Tawny I.D.C. 2.0
• Dominant early Group II soybean
• Excellent field stress tolerance PRR TOL. (FIELD RATING) 2.1
HILUM Black
• Very good Iron Chlorosis tolerance for IDC-prone soils STANDABILITY 2.1
• Terrific emergence scores for no-till or early planting ROW TYPE ALL
SHATTER SCORE 1.4
• SCN resistant HEIGHT Medium/Tall
• EMERGENCE 1.5
Rps 1c PRR gene
PHYTOPHTHORA GENE Rps 1c WHITE MOLD 2.5
SCN PI 88.788 BSR 1.5
4 STAR 3X241 RR2XTEND
• 2.4 Maturity FLOWER Purple SDS 2.0
• Roundup Ready 2 Xtend® Soybeans
PUBESCENCE Light Tawny I.D.C. 2.0
• Tough, rugged soybean with very attractive appearance
• Excellent standability PRR TOL. (FIELD RATING) 2.0
HILUM Imperfect Black
• Well-adapted throughout 4 Star geography STANDABILITY 2.0
• SCN resistant ROW TYPE ALL
SHATTER SCORE 1.3
• Highly adaptable variety to soils, fertility, and yield environments HEIGHT Medium/Tall
EMERGENCE 1.5
PHYTOPHTHORA GENE Rps 1c WHITE MOLD 2.2
SCN PI 88.788 BSR 1.4
4 STAR 3X262 RR2XTEND
• 2.6 Maturity FLOWER Purple SDS 2.0
• Roundup Ready 2 Xtend® Soybeans
PUBESCENCE Gray I.D.C. 2.0
• Robust plant style with high yield potential
• Excellent standability and defensive package PRR TOL. (FIELD RATING) 1.4
HILUM Imperfect Black
• Well-adapted throughout Iowa and Nebraska STANDABILITY 1.7
• Highly adaptable variety to soils, fertility, and yield environments ROW TYPE ALL
SHATTER SCORE 1.3
• Very good BSR and Iron Chlorosis tolerance HEIGHT Medium+
• EMERGENCE 1.5
Rps 1c gene with excellent PRR Scores
PHYTOPHTHORA GENE Rps 1c WHITE MOLD 2.0
SCN None BSR 1.5
SCALE: 1 = BEST, 6 = WORST 12SOYBEAN PRODUCTS No dicamba may be used in-crop with seed in the Roundup Ready® Xtend Crop System unless and until approved or specifically permitted by the U.S. EPA and the appropriate state agency for such use. As of August 21, 2020, no dicamba formulations are currently registered by the U.S. EPA for in-crop use with seed in the Roundup Ready® Xtend Crop
System in the 2021 season. *
4 STAR 3X271 RR2XTEND
• 2.7 Maturity FLOWER Purple SDS 2.0
• Roundup Ready 2 Xtend® Soybeans
PUBESCENCE Gray I.D.C. 2.0
• Extremely adaptable throughout the entire 4 Star geography
• Brings both yield and defensive trait qualities PRR TOL. (FIELD RATING) 1.4
HILUM Imperfect Black
• Very good BSR and Iron Chlorosis tolerance STANDABILITY 1.7
• Great phytophthora ratings with the Rps 1c gene ROW TYPE ALL
SHATTER SCORE 1.3
• SCN resistant HEIGHT Medium+
EMERGENCE 1.5
PHYTOPHTHORA GENE Rps 1c WHITE MOLD 2.1
SCN PI 88.788 BSR 1.5
4 STAR 3X301 RR2XTEND
• 3.0 Maturity FLOWER Purple SDS 1.7
• Roundup Ready 2 Xtend® Soybeans
PUBESCENCE Gray I.D.C. 1.9
• Highly adaptable variety to soils, fertility, and yield environments
• Consistent with dominating yields in this maturity PRR TOL. (FIELD RATING) 1.8
HILUM Imperfect Black
• Excellent standability and PRR tolerance - Rps 1c STANDABILITY 1.6
• Extremely good SDS tolerance ROW TYPE ALL
SHATTER SCORE 1.3
• Outstanding emergence and field stress tolerances HEIGHT Medium/Tall
EMERGENCE 1.5
PHYTOPHTHORA GENE Rps 1c WHITE MOLD 2.2
SCN PI 88.788 BSR 1.5
NOTES
*No dicamba may be used in-crop with seed in the Roundup Ready® Xtend Crop System unless and until approved by the U.S. EPA and the appropriate state agency for such use. As of August 21, 2020, no dicamba formulations are currently registered by the U.S. EPA for in-crop use with seed
in the Roundup Ready® Xtend Crop System in the 2021 season. Current stocks of dicamba herbicides previously approved for in-crop use with seed in the Roundup Ready® Xtend Crop System may not be used for the 2021 growing season. Dicamba may harm crops that are not tolerant to dicamba.
Contact the U.S. EPA and your state pesticide regulatory agency with any questions about the approval status of dicamba herbicides products for in-crop use with seed in the Roundup Ready® Xtend Crop System.
NOTICE: DO NOT APPLY ANY HERBICIDE TO SEED IN THE ROUNDUP READY® XTEND CROP SYSTEM UNLESS IT HAS A PRODUCT LABEL SPECIFICALLY AUTHORIZING THAT USE. TO USE A HERBICIDE IN ANY MANNER INCONSISTENT WITH ITS LABELING
IS A VIOLATION OF FEDERAL LAW. REFER TO THE BAYER TECHNOLOGY USE GUIDE FOR DETAILS AND RECOMMENDATIONS ON USING APPROVED ROUNDUP® AND LIBERTY® BRANDED HERBICIDES ON SEED IN THE ROUNDUP READY® XTEND
CROP SYSTEM.
13 SCALE: 1 = BEST, 6 = WORST 2021 SEED BOOKSOYBEAN CHART
No dicamba may be used in-crop with seed in the Roundup Ready® Xtend Crop System unless and until approved or specifically permitted by the U.S. EPA and the appropriate state agency for such use. As of August 21, 2020, no dicamba formulations are currently registered by the U.S. EPA for in-crop use with seed in the Roundup Ready® Xtend Crop
System in the 2021 season. *Additional information on page 13.
PHYTOPHTHORA
PRR TOLERANCE
SHATTER SCORE
(FIELD RATING)
STANDABILITY
PUBESCENCE
WHITE MOLD
EMERGENCE
MATURITY
ROW TYPE
FLOWER
HEIGHT
HILUM
GENE
I.D.C.
SCN
BSR
SDS
PRODUCT
4 Star 3X192 RR2Xtend 1.9 Purple Gray Buff ALL Medium 1.5 1.4 1.5 1.4 2.0 Rps 1k+3a R 2.0 1.8 PI 88.788
4 Star 3X221 RR2Xtend 2.2 Purple Light Tawny Black ALL Med/Tall 1.5 1.4 2.1 2.1 2.0 Rps 1c 1.5 2.1 2.5 PI 88.788
4 Star 3X241 RR2Xtend 2.4 Purple Light Tawny Imperfect Black ALL Med/Tall 1.5 1.3 2.0 2.0 2.0 Rps 1c 1.4 2.0 2.2 PI 88.788
4 Star 3X262 RR2Xtend 2.6 Purple Gray Imperfect Black ALL Med+ 1.5 1.3 1.7 1.4 2.0 Rps 1c 1.5 2.0 2.0 None
4 Star 3X271 RR2Xtend 2.7 Purple Gray Imperfect Black ALL Med+ 1.5 1.3 1.7 1.4 2.0 Rps 1c 1.5 2.0 2.1 PI 88.788
4 Star 3X301 RR2Xtend 3.0 Purple Gray Imperfect Black ALL Med/Tall 1.5 1.3 1.6 1.8 1.9 Rps 1c 1.5 1.7 2.2 PI 88.788
Before opening a bag of seed, be sure to read, understand and accept the stewardship requirements, including Respect the Refuge and Corn Design® and Respect the Refuge® are registered trademarks of National Corn Growers
applicable refuge requirements for insect resistance management, for the biotechnology traits expressed in Association. All other trademarks are the property of their respective owners.
the seed as set forth in the technology agreement that you sign. By opening and using a bag of seed, you are
ALWAYS READ AND FOLLOW DIRECTIONS FOR USE ON PESTICIDE LABELING. IT IS A VIOLATION OF
reaffirming your obligation to comply with the most recent stewardship requirements.
FEDERAL AND STATE LAW to use any pesticide product other than in accordance with its labeling. NOT ALL formulations of
Monsanto Company is a member of Excellence Through Stewardship® (ETS). Monsanto products are commercialized in dicamba or glyphosate are approved for in-crop use with Roundup Ready 2 Xtend® soybeans. ONLY USE FORMULATIONS
accordance with ETS Product Launch Stewardship Guidance, and in compliance with Monsanto’s Policy for Commercialization THAT ARE SPECIFICALLY LABELED FOR SUCH USES AND APPROVED FOR SUCH USE IN THE STATE OF
of Biotechnology-Derived Plant Products in Commodity Crops. This product has been approved for import into key export APPLICATION. Contact the U.S. EPA and your state pesticide regulatory agency with any questions about the approval
markets with functioning regulatory systems. Any crop or material produced from this product can only be exported to, or status of dicamba herbicide products for in-crop use with Roundup Ready 2 Xtend® soybeans.
used, processed or sold in countries where all necessary regulatory approvals have been granted. It is a violation of national
Roundup Ready 2 Xtend® soybeans contains genes that confer tolerance to glyphosate and dicamba. Glyphosate will kill crops
and international law to move material containing biotech traits across boundaries into nations where import is not permitted.
that are not tolerant to glyphosate. Dicamba will kill crops that are not tolerant to dicamba. Contact your seed brand dealer or
Growers should talk to their grain handler or product purchaser to confirm their buying position for this product. Excellence
refer to the Technology Use Guide for recommended weed control programs.
Through Stewardship® is a registered trademark of Excellence Through Stewardship.
Performance may vary from location to location and from year to year, as local growing, soil and weather conditions may vary.
B.t. products may not yet be registered in all states. Check with your representative for the registration status in your state.
Growers should evaluate data from multiple locations and years whenever possible.
IMPORTANT IRM INFORMATION: RIB Complete® corn blend products do not require the planting of a structured
Seed containing a patented trait can only be used to plant a single commercial crop from which seed cannot be saved and
refuge except in the Cotton-Growing Area where corn earworm is a significant pest. SmartStax® RIB Complete® corn blend
replanted. Examples of seed containing a patented trait include but are not limited to Genuity® Roundup Ready 2 Yield®
is not allowed to be sold for planting in the Cotton-Growing Area. See the IRM/Grower Guide for additional information.
soybeans, Roundup Ready 2 Xtend® soybeans, TruFlex™ Canola, Genuity® Roundup Ready® spring canola, and Genuity®
Always read and follow IRM requirements.
Roundup Ready® winter canola. Additional information and limitations on the use of these products are provided in the
ALWAYS READ AND FOLLOW PESTICIDE LABEL DIRECTIONS. Roundup Ready technology contain genes that Monsanto Technology Stewardship Agreement, the Monsanto Technology Use Guide, and 2016 Technology Use Guide
confer tolerance to glyphosate, an active ingredient in Roundup® brand agricultural herbicides. Agricultural herbicides Addendum to include Roundup Ready 2 Xtend® Soybean. U.S. patents for Monsanto technologies can be found at the
containing glyphosate will kill crops that are not tolerant to glyphosate. following webpage: www.monsantotechnology.com.
Performance may vary from location to location and from year to year, as local growing, soil and weather conditions may vary. Poncho and Votivo are registered trademarks of BASF. Always read and follow label instructions. Not all products are
Growers should evaluate data from multiple locations and years whenever possible and should consider the impacts of these registered for use in all states. ©2020 BASF Corporation. All Rights Reserved.
conditions on the grower’s fields.
Roundup Ready 2 Xtend®, RIB Complete and Design®, RIB Complete®,
Roundup Ready 2 Technology and Design®, Roundup Ready®, Roundup®,
SmartStax and Design®, SmartStax®, and VT Double PRO® are
trademarks of Bayer Group. LibertyLink® and the Water Droplet Design® are registered trademarks of BASF Corporation.
Herculex® is a registered trademark of Corteva AgroSciences LLC. Agrisure Viptera® is a registered trademark of Syngenta.
SCALE: 1 = BEST, 6 = WORST | R = RESISTANT 14FORAGES AND SMALL SEED
F O U R S TA R S E E D
FORAGES AND
SMALL SEED PRODUCTS
We offer an extensive lineup of alfalfas and other forages,
including a wide variety of pasture grasses, cover crops,
and turf grasses.
Consult your 4 Star Seed Company sales representative for a
complete forage catalog.
NOTES
15 2021 SEED BOOKcheck with your seed supplier to
Ready® soybean variety is covere
T H I N K B E F O R E Y O U B I N -R U N
rights, and if so, the policy for sa
THINK BEFORE YOU BIN-RUN Higher Seeding Rate A higher
bin-run Roundup Ready® soybea
Verification Required The last patent on the original Roundup Ready® soybean trait expired a few years
ago and U.S. farmers may legally plant saved seed from some varieties of soybean containing the Roundup High Value of Yield Loss Roundup Ready 2 Y
Ready® soybean trait. However, it is important that you check with your seed supplier to determine if a Roundup Ready 2 Xtend soybe
New Branded Seed
®
specific Roundup Ready® soybean variety is covered by other intellectual property rights, and if so, the yield opportunity than Roundup R
policy for saving seed of that variety.
Latest Technology Cleanout Loss Loss of seed an
Higher Seeding Rate A higher seeding rate may be required for bin-run Roundup Ready® soybeans // High-yielding soybeancleaning
technologies
and handling processes
compared to new branded seed. // Better variety options
// Leading seed treatment options
Seed Treatment Costs Treatin
Yield Loss Roundup Ready 2 Yield® soybean varieties and Roundup Ready 2 Xtend® soybean varieties
typically have a higher yield opportunity than Roundup Ready® soybean varieties*. the cost of the treatment and the
Customer Service
Cleanout Loss Loss of seed and/or shrink occurs during the seed cleaning and handling processes for bin- // Dealer agronomic support Income Every bushel of sa
Lostbefore
run seed. and after the sale you’re not selling as commodity g
// Replant policy support
Seed Treatment Costs Treating your seed will add costs—both the cost of the treatment and the application // Convenient packagingIncreased
and deliverySeed Management
of that treatment. Roundup Ready® soybeans for pl
Reliable Germination and Quality
harvest operations and grain stora
Lost Income Every bushel of saved seed you plant is a bushel you’re not selling as commodity grain. // Rigorously tested and with
meets U.S.
other seed that’s covered by
Federal Seed Act requirements
Increased Seed Management If you plan to save and bin-run Roundup Ready® soybeans for planting, you // Free of seed-borne diseases
will have to manage your harvest operations and grain storage so that the seed isn’t co-mingled with other
// Properly stored and conditioned
seed that’s covered by intellectual property rights.
Monsanto** receives calls and letters each year about potential seed compliance matters. Monsanto**
Anyone with a concern or question can anonymously call 1-800-768-6387. Anyone with
®
*Roundup Ready 2 Yield® soybeans and Roundup Ready 2 Xtend® soybeans are covered by different patents than original Roundup Ready® soybeans and cannot be saved and planted.
*Roundup Ready 2 Yield®
For more information about seed innovation and intellectual property protection, please visit www.seedipalliance.com.
For more information abo
**Monsanto is a member of the Bayer Group.
**Monsanto is a membe
Monsanto Company is a member of Excellence Through Stewardship® (ETS). Monsanto products are commercialized in accordance with ETS Product Launch Stewardship Guidance, and in compliance with Monsanto’s Policy for Commercialization of Biotechnology-Derived Plant Products in
Commodity Crops. This product has been approved for import into key export markets with functioning regulatory systems. Any crop or material produced from this product can only be exported to, or used, processed or sold in countries where all necessary regulatory approvals have been granted. Monsanto Company is
It is a violation of national and international law to move material containing biotech traits across boundaries into nations where import is not permitted. Growers should talk to their grain handler or product purchaser to confirm their buying position for this product. Excellence Through Stewardship® and in compliance with M
is a registered trademark of Excellence Through Stewardship. markets with functioning
ALWAYS READ AND FOLLOW PESTICIDE LABEL DIRECTIONS. It is a violation of federal and state law to use any pesticide product other than in accordance with its labeling. NOT ALL formulations of dicamba or glyphosate are approved for in-crop use with Roundup Ready 2 Xtend® approvals have been gra
soybeans. ONLY USE FORMULATIONS THAT ARE SPECIFICALLY LABELED FOR SUCH USES AND APPROVED FOR SUCH USE IN THE STATE OF APPLICATION. Contact the U.S. EPA and your state pesticide regulatory agency with any questions about the approval status of should talk to their grain
dicamba herbicide products for in-crop use with Roundup Ready 2 Xtend® soybeans. Stewardship.
Roundup Ready technology contains genes that confer tolerance to glyphosate, an active ingredient in Roundup® brand agricultural herbicides. Roundup Ready® 2 Technology contains genes that confer tolerance to glyphosate. Roundup Ready 2 Xtend® soybeans contain genes that confer ALWAYS READ AND FO
tolerance to glyphosate and dicamba. Glyphosate will kill crops that are not tolerant to glyphosate. Dicamba will kill crops that are not tolerant to dicamba. Contact your seed brand dealer or refer to the Monsanto Technology Use Guide for recommended weed control programs. formulations of dicamba
Bayer, Bayer Cross, Roundup Ready 2 Xtend®, Roundup Ready 2 Yield®, Roundup Ready® and Roundup® are registered trademarks of Bayer Group. USES AND APPROVED
©2020 Bayer Group, All Rights Reserved. dicamba herbicide produ
Roundup Ready techn
contains genes that conf
are not tolerant to glypho
weed control programs.16PLANTING GUIDE
Estimating Plant Population Weights and Measures Guide Fertilizer Weight and Measures
An accurate estimate of plant population per acre can be obtained by counting the Linear Measure (Length) Pounds of Active Nutrient per Gallon
number of stalks in a length of row equal to 1/1000 of an acre. Make at least three 1 league = 3 miles Liquid: N P K
counts at separate sections of the cornfield, figure the average of these samples, 1 mile = 5280 feet or 320 rods 1 gallon 28% (28-0-0) = 10.66 lbs. 2.98 0 0
then multiply this number times one thousand. 1 furlong = 40 rods 1 gallon 10-34-0 = 11.65 lbs. 1.16 3.96 0
1 rod = 16 ½ feet 1 gallon 7-21-7 = 11.00 lbs. 0.77 2.31 0.77
Row Width Row Length Equal to 1/1000 Acre
1 yard = 3 feet 1 gallon 9-18-9 = 11.11 lbs. 0.99 1.99 0.99
20” 26’1” 1 gallon NH (82-0-0) = 5.15 lbs. 4.22 0 0
1 foot = 12 inches
24” 21’9”
Square Measure (Area) Dry Bulk:
28” 18’8” Ammonium Sulfate (21-0-0) 60-64 lbs./cu. ft.
1 acre = 160 square rods or 43,560 square feet
30” 17’5” 1 sq. rod = 20 ¼ square yards Ammonium Nitrate (34-0-0) 58-62 lbs./cu. ft.
32” 16’4” 1 sq. yard = 9 square feet Urea (46-0-0) 48-52 lbs./cu. ft.
36” 14’6” 1 sq. foot = 144 square inches Diammonium Phosphate (18-14-0) 56-60 lbs./cu. ft.
Ammonium Phosphate (16-20-0) 58-62 lbs./cu. ft.
38” 13’9” Cubic Measure (Volume) Coarse Muriate of Potash (0-0-60) 66-70 lbs./cu. ft.
40” 13’1” 1 cubic yard = 27 feet
1 cubic foot = 1728 cu. Inches
1 cord (4’ x 4’ x 8’) = 8 cord feet
Number and Length of Rows in an Acre 1 cord foot (4’ x 4’ x 1’) = 16 cord feet Volume Conversion Factors
2.5 cu. ft. of ear corn = 1 bushel Cu. ft. x 0.8 = bushels grain or shelled corn Gallons x 0.1337 = cu. ft.
One fairly accurate way to determine the number of acres in a cornfield, or portion 1.2 cu. ft. of shelled corn = 1 bushel Cu. ft. x 0.4 = bushels ear corn Cu. in. ÷ 1,728 = cu. ft.
of a cornfield, is by computing the length of the rows and the distance between
Liquid Measure Cu. ft. x 7.48 = gallons Cu. yd. x 27 = cu. ft.
rows. The following table shows the number and length of rows in one acre.
1 gallon = 4 quarts Cu. ft. x 62.4 = pounds of water Cu. ft. ÷ 27 = cu. yds.
Length If distance between row is: 1 quart = 2 pints Gallons x 8.330 = pounds of water
of Rows
20” 24” 30” 32” 36” 38” 40”
1 pint = 4 gills
in Feet
1 pint = 16 fluid ounces
660 39.6 33.0 26.4 24.7 22.0 20.8 19.8
990 26.4 22.0 17.6 16.5 14.7 13.9 13.2 Dry Measure Growing Degree Definition for Corn
1320 19.5 16.5 13.2 12.7 11.0 10.4 9.9
1 bushel = 4 pecks Amount of time, or heat, required to mature a specific hybrid can be expressed
1 peck = 8 quarts in several ways.
1650 15.8 13.2 10.5 9.9 8.8 8.3 7.9
1 quart = 2 pints
1980 13.2 11.0 8.7 8.2 7.3 6.9 6.5 Use of “Growing Degrees” is a common method. The formula is:
2310 11.3 9.4 7.5 7.0 6.3 5.9 5.6
Weight (Ordinary Commodities)
(Daily max. temp* + Daily min. temp**)
1 long ton = 2240 pounds GD = - 50° F
2640 9.8 8.2 6.6 6.2 5.5 5.2 4.9 2
1 short ton = 2000 pounds
1 hundredweight (cwt.) = 100 pounds * Use 86 if maximum temperature exceeds 86° F.
1 stone = 14 pounds ** Use 50 minimum temperature if less than 50° F.
1 pound (lbs.) = 16 ounces The GDs are accumulated through the appropriate period or season. GD is a
1 ounce (oz.) = 16 drams relative rating and should not be associated with absolute days. For example,
on a day when the low is 48° and the high is 90°, the GD is determined
Formula for Determining Yield per Acre (Corn) as follows:
Use this formula to determine bu./A of No. 2 (15%) shelled corn:
(86° + 50°)
(100 - harvest moisture) x (lbs. grain harvested) x (110.465) / (row length, ft.) / (row width, in.) / (no. rows harvested) = bu./A GD =
2
- 50° F = 18
EXAMPLE: Six 30” rows 1,980 feet (120 rods) in length are harvested, yielding 6500 lbs. of shelled corn at 18.9% moisture:
(100 - 18.9 = 81.1) x (6500) x (110.465) / (1,980) / (30) / (6) = 163.4 bu./A
Formula for Determining Yield per Acre (Soybeans) TO 2,450 GD
Use this formula to determine bu./A of soybeans:
(100 – moisture) x (lbs. soybeans harvested) x (100.138) / (row length, ft) / (row width, in.) / (no. rows harvested) = bu. of yield per acre 2,300 TO 2,500 GD
at 13%
Estimating Bin and Silo Capacity MORE THAN
2,500 GD
Round Bins: To estimate the capacity of a bin, multiply the depth in feet by the diameter squared (diameter x diameter). Multiply this by
.628 to determine shelled corn capacity in bushels. Divide by 2 to determine bushels of ear corn storage.
Square or Rectangular Bins: Multiply the length by the width by the depth of grain, all in feet. Multiply this by .80 to determine the
number of bushels of shelled corn that can be stored in the bin. For ear corn, divide this figure by 2.
17 2021 SEED BOOKPLANTING GUIDE
Seeds Per Pound Seeds Per Foot
12 11 10 9 8 7 6 5 4 3 2.5 2
Desired Seeds
3000
2000
3400
2400
2800
3500
2600
2900
3300
2300
2500
3200
2200
2700
3100
2100
Row Width
Per Acre
Seeds Per Acre in Thousands
APPROXIMATE POUNDS PER ACRE
125,000 63 60 57 54 52 50 48 46 45 43 42 40 39 38 37 36 7” 896 821 746 671 598 521 448 373 299 224 187 150
140,000 70 67 64 61 58 56 54 52 50 48 47 45 44 42 41 40 10” 627 575 523 471 419 367 314 262 209 157
150,000 75 71 68 65 62 60 58 56 54 53 50 48 47 45 44 43 14” 448 411 374 336 300 263 224 188 150
160,000 80 76 73 70 67 64 62 59 57 55 53 52 50 48 47 46 15” 418 383 348 313 278 243 209 173 138
175,000 88 83 80 76 73 70 67 63 63 60 58 56 55 53 51 50 20” 314 288 262 236 210 184 158 132
185,000 93 88 84 80 77 74 71 69 66 64 62 60 58 56 54 53 24” 261 239 217 195 173 151 129
200,000 100 95 91 87 83 80 77 74 71 69 67 65 63 61 59 57 28” 224 205 186 167 148 129
215,000 108 102 98 93 90 86 83 80 77 74 72 69 67 65 63 61 30” 209 192 175 158 141 124
225,000 113 107 102 98 94 90 87 83 80 78 75 73 70 68 66 64 32” 196 180 164 148 132
Note: Figures for lbs./Acre have been rounded to nearest whole number 36” 174 160 145 140
38” 165 151 137
Soybean Hoop Method Horizontal Silo Capacity, Wet Tons Figuring Acreage
1. How to do stand counts: NH3 hose works well for 65% moisture; 40 lbs/ft3 or 50 ft3 = 1 ton; 1.25 ft3/bu. Silo RECTANGULAR OR SQUARE FIELDS
determining populations of drilled soybeans. A 127 inch assumed level full. Capacities rounded to nearest 5 tons. To
Acre = 43,560 sq. ft. Acres = Area in sq. ft.
length of this hose fastened together at the two ends with calculate capacity of other silo sizes, multiply silage depth, ft, by
43,560
a barb, wooden dowel or duct tape makes a good hoop that silo width, ft, by silo length, ft, and divide by 50.
can be tossed on the field to determine the population. Each Length
soybean found within the center of the hoop represents Depth Silo floor width, ft
Length x Height (in. ft.)
Width
5000 plants per acre. ft 20 30 40 50 60 70 80 90 100 Acre =
43,560
wet tons/ 10’ length
2. A 28” diameter hoop, take the plants counted in the hoop
times 10,000. Due to the smaller sample size take a few 10 40 60 80 100 120 140 160 180 200 TRIANGULAR FIELDS
more counts with this size hoop. 12 50 70 95 120 145 170 190 215 240
Base x Height (in. ft.) Height
Rowed Bean Stand Count Distances 14 55 85 110 140 170 195 225 250 280 Acre =
2 x 43,560
15” 34’-10” is 1/1000th of an acre
16 65 95 130 160 190 225 255 290 320
19” 26’-6” PARALLELOGRAM (OPPOSITE SIDES PARALLEL)
18 70 110 145 180 215 250 290 325 360
30” 17’-5”
38” 13’-9” 20 80 120 160 200 240 280 320 360 400
Acre =
Base x Height (in. ft.) Height
43,560
3. A real hula-hoop can be used to estimate drilled or Base
broadcasted soybean populations. Randomly throw the
hula-hoop in at least five locations in a soybean field and Horizontal Silo Capacity, Dry Tons TRAPEZOID (TWO SIDES PARALLEL)
A
average the results. If you know the inside diameter of the Silo assumed, level full. Capacities rounded to nearest 5 tons.
hoop you can estimate the number of plants per acre. (A+B) x Width (in. ft.) Height
Silo floor width, ft Acre =
Depth 2 x 43,560
ft 20 30 40 50 60 70 80 90 100 B
Each Plant Inside Hoop
Inside Diameter of Hoop
Represents Plants Per Acre tons dry matter/ 10’ length MORE THAN FOUR SIDES (NO TWO SIDES PARALLEL)
18” 24,662 10 15 20 30 35 40 50 55 65 70
21” 18,119
12 15 25 35 40 50 60 65 75 85
24” 13,872
Divide into triangles and/or
27” 10,961 14 20 30 40 50 60 70 80 90 100
rectangles; find area of each; ht
ig se
30” 8,878 16 20 35 45 55 65 80 90 100 110 then add. He Ba
33” 7,337 Height
18 25 40 50 65 75 90 100 115 125
36” 6,165
20 30 40 55 70 85 100 110 125 140 Base
Example: 18” hoop (5 plants inside hoop)
5 x 24,662 = 123,310 Plants Per Acre
18FOUR STAR SEED COMPANY
2 9 2 9 3 3 5 TH S T R E E T
LOGAN, IOWA 51546
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