The NPK (Nitrogen, Phosphorus, Potassium) Recommendations Calculator uses soil type, crop code and soil test levels for phosphorus and potassium to provide Clemson recommendations for fertilizer ...

The Iowa Legislature wants to spend $1 million next year to revise the state’s long-standing nitrogen fertilizer calculator used in seven corn-growing states. The money would be used to update the ...

Corn and soybean harvest continues to move slowly forward. The rains of the past two weeks have really slowed the pace of activity. Soils vary now from moist to wet, and any additional rain will take ...

A tractor is used to apply 32 percent liquid urea ammonium nitrate by dripping it onto the base of young corn plants in Northeast Iowa as part of a nitrate strip trial done by the Iowa Soybean ...

10. Cost per pound of the nutrients you actuallyneed? You probably already know the answer. Your fertilizer purchase should be influenced by numbers 4, 7, 8, 9 and 10, and less by numbers 1, 2, 3, 5 ...