Effect of Tillage and Potassium Fertilization on Soybean Yield
2005
- UW-Madison Dept. of Soil Science
Project Media
There continues to be considerable interest in P and K fertilizer placement among cash grain producers for numerous reasons. Growers have faced low commodity prices for several years and are interested in placement methods that improve the efficiency of nutrient use and potentially reduce input costs. This issue seems be more important in high residue management systems where broadcast, incorporated applications are not possible because of the need to maintain surface crop residue for conservation purposes. Wisconsin research has shown response to banded P and K for corn in conservation tillage systems, but little research has been conducted regarding fertilizer placement for soybean. It is not known what effect tillage will have on the uptake of K by soybean, and if this crop will respond like corn to localized K placement in no-till and other low-disturbance tillage systems.