Gypsum Applied at Planting Peanut Notes No. 61 2021

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Question:
would there be enough calcium for peanuts if we spread gypsum ahead of the bedder at 2500 lb?

Jordan:
The gypsum needs to be applied at pegging. The problem with applying gypsum now and incorporating it is that it gets mixed throughout the soil profile. You really need a high concentration in the upper 2 inches of soil when pegging begins and when pods and kernels develop. The gypsum put out at planting will not be enough due to distribution. Even though you are putting out a higher rate, there still may not be an adequate amount right in the pegging zone for the length of time needed during reproductive growth. Also, you only need 1200 to 2000 pounds/acre (depending on product) when putting it out at pegging. Hope this helps.