Resumo

HAAG, H.P.; CAMPORA, P.  e  FORTI, L.H.S.P.. Malnutrition symptom of macronutrients, boron and zinc in guar plants. An. Esc. Super. Agric. Luiz de Queiroz [online]. 1990, vol.47, n.1, pp. 251-260. ISSN 0071-1276.  http://dx.doi.org/10.1590/S0071-12761990000100016.

Guar plant (Cyamopsis tetragonoloba L. (Taub.)) cv. Brooks is an option for the semi-arid regions in northeastern Brazil, because besides the seed potential for the extraction of galactomonnan it is an option for that region where a constant deficit of food for animal feeding prevails. In order to obtain the malnutrition symptoms of macronutrients, boron and zinc, young guar plants were grown in nutrient solutions. The symptoms were described. The analytical satisfactory range and defficient range in the leaves was: N% 1.83-1.62; P% 0.20-0.04; K% 3.85-1.64; Ca% 2.34-0.56; Mg% 0.74-0.22; S% 0.39-0.03; B ppm 114-71; Zn ppm 16-6.

Palavras-chave : guar; macronutrients; boron; zinc.