FIELDCONDITIONS ASSOCIATED WITH K ABSORPTION BY SULTANINA GRAPES
|Jorge Valenzuela B.1 y Rafael Ruiz Sch.2|
In a Sultaniná experimentalvineyard located at La Platina Experiment Station, Santiago, leaf-K was found to be dependantofavailable soil water at the 25-50 cm layer. Dry blocks showed poor infiltration probably due to machinery compactation. Ammonium acetate extractable K in soil of non treaJed plots was similar at different soil levels in aH blocks of the vineyard. In the spring of 1973 foliar K levels were not affected by soilapplicationsof K2SO4. At the following season after a rainywinter, leaf K increase deverywhere especially inplants treated with K2SO4.
|1Ing. Agr., Ph. D., Programa Frutles y Viñas, Estación Experimental La Platina, Instituto de Investigaciones Agropecuarias (INIA), Casilla 5427, Santiago, Chile. |
2Ing. Agr., M. S., Programa Fertilidad de Suelos, Estación Experimental La Platina, Instituto de Investigaciones Agropecuarias (INIA), Casilla 5427, Santiago, Chile.