Interaction of drip-applied potassium with soil nutrients

Assess the effect of drip applied potassium (K) as it interacts with other nuitrients


13 Jun 2001


    Potassium application in 1988 at the Western Agricultural Research Center "Montmorency" tart cherry orchard will be continued as in 1986 and 1987. Three rates (0.35, 0.7, and 1.4 kg K2O/tree) of three sources (KCl, K2SO4, and KNO3) of K will be applied to individual trees through the drip system. Potassium will be applied with nitrogen in 4 equal biweekly applications beginning at bloom. Plot design is a randomized complete block with 6 replications. Fruit yield and soil and foliar nutrient content will be measured in 1988. Analysis of soil samples collected in 1986 and 1987 will be done. Xylem sap will be extracted in April 1988 and analyzed for nutrient content.