Abstract
When crops are grown continuously under no-tillage or very minimum tillage, there is a tendency for phosphorus (P) and potassium (K) to become concentrated at or near the soil surface. This occurs when P and K fertilizers are broadcast on the surface and not mixed with the soil as would occur with plowing. The result is a stratification of P and K such that the surface few inches become very high in those nutrients, but soil test levels remain largely unaffected below that. The question is whether high yields of no-till crops can be obtained under these conditions.
Publication Date
1990
Volume
11
Number
7
Repository Citation
Thomas, Grant W., "Effectiveness of Surface Application of Phosphorus and Potassium on Yield of No-Till Corn Grown on Soils Testing Low or Medium Below a Depth of 3 Inches" (1990). Soil Science News and Views. 120.
https://uknowledge.uky.edu/pss_views/120
