Uso da adubação foliar nitrogenada e potássica no algodoeiro
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Data
2001-12-01
Autores
De Carvalho, Marco Antonio Camillo [UNESP]
Paulino, Helder Barbosa [UNESP]
Furlani-Júnior, Enes [UNESP]
Buzetti, Salatiér [UNESP]
De Sá, Marco Eustáquio [UNESP]
De Athayde, Manoel Luiz Ferreira [UNESP]
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Resumo
The present work was conducted in Selvíria county (MS-Brazil), in the agricultural year of 1998/99, for evaluating nitrogen and potassium foliar application to supplement sowing fertilization on cotton (IAC 22) crop. A randomized complete block design with 13 treatments and four replications was used. The treatments were constituted by a control (without foliar application) and nitrogen and/or potassium foliar applications two, four, six or eight weeks after beginning of flowering. The urea was used as source of N and potassium chloride as source of K. Urea in the concentration of 10% and potassium chloride at 4% were applied at a rate of 250 L.ha-1. Height of plants, nodule number, number of reproductive branches, boll per plant, 30 boll mass, yield and fiber percentage were evaluated. It is concluded that the N doses increased the yield and decreased the fiber percentage. There was no evaluated response to the application of K or NK.
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Palavras-chave
Cotton, Foliar application, Nitrogen, Potassium, cotton, fertilizer application, nitrogen, potassium, Brazil, Gossypium hirsutum
Como citar
Bragantia, v. 60, n. 3, p. 239-244, 2001.