Mineral nutrition of vegetable crops: XII. deficiencies of micronutrients in cauliflower

Abstract

Cauliflower (Brassica olerácea var. botrytis, cultivar Piracicaba precoce nº 1) seedlings were transfered at the age of 25 days to plastic pots containing quartz. Groups of 4 plants were exposed to the following nutrient solutions: -B, -Cu, -Fe, -Mn, -Mo, -Zn, and solution containing all the nutrients. Clear cut deficiences symptoms were described. The influence of the absent of the micronutrients on the growth rate is showed on quadro 1 in Portuguese text. Datas of the che mical analysis of different parts of the vegetable (new leaves, old leaves, "head" stem) are presented on quadro 2 and 3 in Portuguese text.