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Sunflower District

Cheyenne County
212 E Washington
PO Box 667
St. Francis, KS  67756-0667
785-332-3171
785-332-3199 Fax
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Sherman County
813 Broadway Room 301
Goodland, KS 67735-0002
785-890-4880
785-890-4879 Fax
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Wallace County
118 N Gardner   
PO Box 189
Sharon Springs, KS 67758
785-852-4285
785-852-4284 Fax
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Optimum Seeding Rates

 Optimum Seeding RatesOptimum Plant Stand
Dryland600,000 to 900,000 seeds/ac 
Irrigation900,000 to 1,350,000seeds/ac 

Seeding Rate with Actual Seed Drop       

                   Stand with 80% Germination & Emergence    
 Seeds/Foot of Row   Plants/Foot of Row
Row Width (in)Row Width (in)
7.51012 7.5 10 12
600,0008.611.513.8 480,000 6.99.2 11.0
700,00010.013.416.1 560,000 8.010.712.9
800,00011.515.318.4 640,000 9.212.214.7
900,00012.917.220.7 720,00010.313.816.5
1,000,00014.319.123.0 800,00011.515.318.4
1,100,00015.821.025.3 880,00012.616.820.2
1,200,00017.223.027.5 960,00013.818.422.0
1,300,00018.724.929.8 1,040,00014.919.923.9
1,400,00020.126.832.1 1,120,00016.121.425.7

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Interactive Calculating the Plant Population in Your Field Worksheet