Are wood ashes useful as a K fertilizer?
Wood ashes are relatively high in potassium. If used in low or moderate rates, they can be good sources of this nutrient. Wood ashes are also high in several other salt products. For this reason, high application rates should be avoided as salt problems may occur. 11. How much potash to apply for soybeans and when? Does an annual application of potassium pay in soybeans or can I put it on with corn the previous year? The desired rate of potash application is dependent on three principal factors: soil test value for potassium (lb. K/A), yield goal, and the CEC of the soil. Refer to Table 19, page 14 of Tri State Fertilizer Recommendations for Corn, Soybeans, Wheat & Alfalfa, Ext. Bull E-2567, for recommended rates of potassium application for soybeans. Soybeans seem to be relatively insensitive to the time of year of potassium application. We have found only a small advantage (approximately 1 bu/A) to spring application of potash as compared to a fall application. Research has shown tha
