Question:

Farmer applied 3,000 pounds per acre of litter with 2.2 pounds zinc per ton of litter. Will that be an issue in peanuts?

Jordan:

This will increase the zinc index by 47 points.

3,000 pounds = 1.5 tons

2.2 pounds zinc per ton / 0.071 = 47 zinc index

Zinc index is 141 from earlier sample. The increase is up to 188. Our threshold for zinc index is 250 if pH is below 6.0. This field will be okay for peanuts.