Resumos
Foi estudado o efeito das carências combinadas de alguns macronutrientes no crescimento, aspecto e composição mineral do algodoeiro, Gossypium hirsutum L., var. IAC RMB. O trabalho regstra: sintomas foliares dos macronutrientes estudados nas folhas superiores e inferiores das plantas.
Symptoms of deficiencies of several macronutrients and binary combinations thereof were induced in the cotton plant. It was found that depending upon the particular combination the following picture developed: (a) individual symptoms are present according to the general pattern; (b) individual symptoms are present with a reversal of the general pattern with respect of distribution; (c) a combination of the individual symptoms shows up; (d) an individual symptom masks the other; (e) a different symptom develops. Chemical analysis of both upper and lower leaves has shown single and multiple effects depending upon the treatment considered.
Estudos sobre a alimentação mineral do algodoeiro. V. Efeito das carências combinadas no crescimento, aspecto e composição química* * Parte da tese apresentada pelo primeiro autor em cumprimento parcial das exigências para a obtenção do título de "Magister Scientiae".
Studies on the mineral nutrition of the cotton plant. V. Effect of joint deficiencies on growth, aspect and chemical composition
F. Freitez PerezI; E. MalavoltaII
ICentro Exptal. de Estudos Superiores, Barqto., Lara, Venezuela
IIDepart. Química - ESALQ - Piracicaba
RESUMO
Foi estudado o efeito das carências combinadas de alguns macronutrientes no crescimento, aspecto e composição mineral do algodoeiro, Gossypium hirsutum L., var. IAC RMB.
O trabalho regstra: sintomas foliares dos macronutrientes estudados nas folhas superiores e inferiores das plantas.
SUMMARY
Symptoms of deficiencies of several macronutrients and binary combinations thereof were induced in the cotton plant.
It was found that depending upon the particular combination the following picture developed:
(a) individual symptoms are present according to the general pattern;
(b) individual symptoms are present with a reversal of the general pattern with respect of distribution;
(c) a combination of the individual symptoms shows up;
(d) an individual symptom masks the other;
(e) a different symptom develops.
Chemical analysis of both upper and lower leaves has shown single and multiple effects depending upon the treatment considered.
Texto completo disponível apenas em PDF.
Full text available only in PDF format.
LITERATURA CITADA
HOAGLAND, D. R. & D. I., ARNON. 1950 - The water culture method for growing plants without soil. Calif. Agr. Exp. Sta. Cir. 341.
MALAVOLTA E. & H. P. HAAG. 1968 - Recent advances on the study of the mineral nutrition of cotton in Brazil. An. E.S.A. "Luiz de Queiroz" XXV: 219-230.
- HOAGLAND, D. R. & D. I., ARNON. 1950 - The water culture method for growing plants without soil. Calif. Agr. Exp. Sta. Cir. 341.
- MALAVOLTA E. & H. P. HAAG. 1968 - Recent advances on the study of the mineral nutrition of cotton in Brazil. An. E.S.A. "Luiz de Queiroz" XXV: 219-230.
Datas de Publicação
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Publicação nesta coleção
29 Maio 2012 -
Data do Fascículo
1972
