%0 Journal Article
%T Nutri£¿£¿o mineral de hortali£¿as: XC. Defici¨ºncias de macronutrientes, boro e zinco em milho doce
%A Haag
%A H.P.
%A Dechen
%A A.R.
%A Carmello
%A Q.A.C.
%J Anais da Escola Superior de Agricultura Luiz de Queiroz
%D 1990
%I Scientific Electronic Library Online
%R 10.1590/S0071-12761990000200013
%X young sweet corn plants (zea mays var. sachirata l.) cv. contibrasil were transplanted to pots containing 7kg of s and size pure quartz. during the first 5 days the plants received only water. treatments were started 18 days after germination and consisted of: complete solution (all nutrients): -n, -p, -k, -ca, -mg, -s, -b, -zn. solutions were supplied to the plants through percolation. plants were collected as soon as the symptoms appeared and divided into: new leaves, old leaves, stem, tassel, straw, and cob. all the material was dried at 80¡ãc for several days and analysed for nutrient content by laboratory conventional methods. the authors concluded that: a) omission of any of the elements reduce plant growth; b) clear cut symptoms were obtained for all nutrients; c) levels in the new leaves both healthy and diseased were: n% 1.29-0.72; p% 0.17-0.03; k% 1.33-0.15; ca% 0.90-0.74; mg% 0.36-0.03; s% 0.20-0.08; b ppm 39-21; zn ppm 3-4; and d) levels in the old leaves, both healthy and diseased, were: n% 0.54-0.48; p% 0.05-0.02; k% 1.12-0.08; ca% 1.05-0.70; mg% 0.54-0.03; s% 0.13-0.10; b ppm 58-25; zn ppm 2-10.
%K sweet corn
%K malnutrition symptoms
%K macronutrients
%K boron and zinc.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0071-12761990000200013&lng=en&nrm=iso&tlng=en