Fertilizing Sorghum Sudan?

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southernultrablack
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Fertilizing Sorghum Sudan?

Post by southernultrablack » Sun Jun 21, 2020 1:14 pm

Planted about 16 acres of SS Friday and Saturday, Going to fertilize next week. What should I use? Don’t have a soil sample for this field so what “should” work best?



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Re: Fertilizing Sorghum Sudan?

Post by Bigfoot » Sun Jun 21, 2020 2:04 pm

Answers will be all over the place. I’d go 70 50 50.
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Re: Fertilizing Sorghum Sudan?

Post by callmefence » Sun Jun 21, 2020 2:08 pm

No way to say on your p & k. Someone who knows your area may give you a guess. That's what it will be. We use 30-10-0 at planting at around 200 - 250 pounds. Figuring nitrogen at 1 pound per expected day of growth.
After first cut we only use 46-0-0
And that depends on outlook for second cut... gambling it's called
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Re: Fertilizing Sorghum Sudan?

Post by Richnm » Sun Jun 21, 2020 2:45 pm

I add 80 pounds of N after each cutting . Each ton removes 40 pounds of N from the soil.

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Re: Fertilizing Sorghum Sudan?

Post by Texasmark » Mon Jun 22, 2020 9:34 am

When I send soil samples to the local Ag. college and I am forecasting SS, the answer comes back 3-1-2 NPK and #/Ac. determined by how much yield you are expecting. To prevent nitrate problems and not knowing how much rain I will get to get that "food" to produce plant growth, I keep fertilizer on the lean side.

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