ABSTRACT


Jorge Valenzuela B.1 y Gonzalo Sepúlveda R.1
 
Trough chemical analysis of leaves, soils and waters boron excess was shown to be responsible of leaf abnormal growth. Leaf levels ranged from 200 - 300 ppm in the whole leaf. Soil boron was high while water content was less than 0.30 ppm. Cultivars presented differential susceptibility being Moscatel de Austria the most affected.
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1Ing. Agr., Ph., D., e Ing. Agr., Programa Frutales y Viñas, Estación Experimental La Platina y Subestación Experimental Vicuña; respectivamente, Instituto de Investigaciones Agropecuarias (INlA), Casilla 5427, Santiago, Chile.