Emprêgo de carborundo em inoculações com Sphaceloma

Abstract

Carborundum powder sprinkled on Euphorbia prunifolia leaves prior to inocula tion by rubbing with a spore suspension of Sphaceloma krugii increased the number of infected leaves and the number of lesions per leaf. Rubbing without carborundum was much less effective, and inoculation by spraying induced no infection under com parable conditions.