Acessibilidade / Reportar erro

Contribuição ao estudo da aplicação do método da diagnose foliar ao algodoeiro (Grossypium hirsutum L., var. I. A. C. 817) II

Resumo

This paper deal with one experiment carried out in order to study the correlation between petioles analysis and seed cotton yield. A 3X3X3 factorial with respect to N, P2 0(5) and K2 O was installed in a sandy soil with low potash content and medium amounts of total N and easily extractable P. Two kinds of petioles, newly mature were collected for analysis: those attached to fruit hearing branches, and petioles located on the stem; the first group is conventionally named "productive petioles"; The second one is called "not productive petioles". Petioles' sampling was done when the first blossoms appeared. Yield date showed a marked response to potash, both nitrogen and phosphorus having no effect. Very good correlation was found between petioles potash and yield. Both types of petioles samples were equally good indicators of the potash status of the plants. By mathematical treatment of the date it followes that the highed yield which was possible under experimental conditions, 1.562 kg of seed cotton per hectare would be reacher by using 128 kg of K2O per hectare. With this amount of potash supplied to the plants the following K levels would be expected in the petioles: "productive petioles" "not productive petioles" 1,93 % K 1,85 % K


E. S. A. "Luiz de Queiroz"

SUMMARY

This paper deal with one experiment carried out in order to study the correlation between petioles analysis and seed cotton yield.

A 3X3X3 factorial with respect to N, P2 05 and K2 O was installed in a sandy soil with low potash content and medium amounts of total N and easily extractable P. Two kinds of petioles, newly mature were collected for analysis: those attached to fruit hearing branches, and petioles located on the stem; the first group is conventionally named "productive petioles"; The second one is called "not productive petioles". Petioles' sampling was done when the first blossoms appeared.

Yield date showed a marked response to potash, both nitrogen and phosphorus having no effect. Very good correlation was found between petioles potash and yield. Both types of petioles samples were equally good indicators of the potash status of the plants.

By mathematical treatment of the date it followes that the highed yield which was possible under experimental conditions, 1.562 kg of seed cotton per hectare would be reacher by using 128 kg of K2O per hectare. With this amount of potash supplied to the plants the following K levels would be expected in the petioles:

"productive petioles" "not productive petioles"

1,93 % K 1,85 % K

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

LITERATURA CITADA

  • ANÔNIMO - Sem data - A adubação racional do algodoeiro no Brasil, Boletim distribuido pelo Serviço Técnico da Companhia Brasileira de Potassa e Adubos, Indústria e Comércio, São Paulo.
  • CATANI, R. A., J. ROMANO GALLO & H. GARGANTTNI, 1955 - Amostragem de solo, métodos de análise, interpretação e indicações gerais para fins de fertilidade, Boletim n.° 69 do Instituto Agronômico, Campinas.
  • COOPER, H. P., 1939 - Nutritional deficiency symptoms in cotton, Soil Sci. Soc. Amer., Proceedings 4: 322-324.
  • COOPER, H. P., 1944 - Plant-nutrient deficiency symptoms in cotton, Hunger Signs in Crops, The American Society of Agronomy and The National Fertilizer Association, Washington, D. C, 125-149.
  • COWIE, G. A., 1951 - Potash, Edward Arnold & Co., London.
  • GRANER, E. A., 1952 - Como aprender estatística, Biblioteca Agronômica Melhoramentos, n.° 13, Cia. Merolhamentos de S. Paulo.
  • MELLO, F. A. F., 1958 - Contribuição ao estudo da aplicação do método da diagnose foliar ao algodoeiro (Cossypium hirsutum L., var. I A. C. 817), tese mimeografada, Piracicaba, E. S. Paulo, Brasil.
  • MELLO, F. A. T., T. COURY, M. O. C. BRASIL SOBR. & E. MALA VOLTA, 1959 - Contribuição ao estudo da aplicação do método da diagnose foliar ao algodoeiro (gossypiuns hissutum, L., var. I A. C. 817). Tese aprovada no VII Congresso Brasileiro de Ciência do Solo, Julho de 1959, Piracicaba, Brasil.
  • PAIVA NETO, J. E., 1949 - Percolação ou agitação, na química dos complexos sortivos do solo, Bragantia 2 (3): 93-99.
  • PREVOT, P., 1953 - Les bases du diagnostic foliaire: applications a l'arachide, Oléagineux, 8ème année, n.° 2.
  • PREVOT, P. & M. OLLAGNIER, 1956 - Méthode d'utilisation du diagnostic foliaire, Analyse des Plantes et Problèmes des Fumu-res Minerales, Institut de Recherches pour les Huiles et Oléagineux, Paris.
  • RANZANI, G., 1956 - Levantamento da carta de solos da Secção Técnica "Química Agrícola", da Escola Superior de Agricultura "Luiz de Queiroz", Tese, Piracicaba, E. S. Paulo, Brasil.
  • TOTH, S. J., A. L. PRINCE, A. WALLACE & D. S. MIKKELSEN, 1948 - Rapid quantitative determination of eight mineral elements in plant tissue by a systematic procedure involving use of a flame photometer, Soil Sci., 66: 459-466.
  • Contribuição ao estudo da aplicação do método da diagnose foliar ao algodoeiro (Grossypium hirsutum L., var. I. A. C. 817) II

    Francisco de A. F. de Mello; Moacyr de O. C. do Brasil Sobrº; Henrique Paulo Haag
  • Datas de Publicação

    • Publicação nesta coleção
      10 Set 2012
    • Data do Fascículo
      1959
    Universidade de São Paulo, Escola Superior de Agricultura Av.Páduas Dias, 11, C.P 9 / Piracicaba - São Paulo, Brasil, tel. (019)3429-4486, (019)3429-4401 - Piracicaba - SP - Brazil
    E-mail: scientia@esalq.usp.br