Efeito da adubação potássica via solo e foliar sobre a produção e a qualidade da fibra em algodoeiro (Gossypium hirsutum L.)
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Data
2007-07
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Editor
João Batista Duarte
Resumo
Cotton cropping has shifted from traditional southeastern
Brazil producing zones to central region savannahs. In this
process, significant changes in production technology as well as
in the crop environment have occurred, concurrently with a great
yield increase. These changes have disrupted the practice of
fertilization, creating systems where intensive applications are
made, although not properly supported by experimental data.
This study aimed to evaluate, in field conditions, the effect of
combined soil and foliar spray potassium doses on yield and
quality of cotton fiber, in southeastern Goiás State. The trial was
conducted in the municipality of Ipameri (16°35'S, 47°02'W,
920 m), during the 2004/2005 growing season. A randomized
complete block with split-plot experimental design was used.
Five doses were applied to soil (0 kg ha-1, 60 kg ha-1, 120 kg ha-1,
180 kg ha-1, and 240 kg ha-1 K2O), combined with four foliar
doses (0 kg ha-1, 7.2 kg ha-1, 14.4 kg ha-1, and 21.6 kg ha-1 K2O).
Yield gains were observed for potassium applied both through
soil and foliar spraying, without interactions between modes of
application. There were no effects of doses and mode of
application on the technological cotton fiber quality.
Descrição
Palavras-chave
Algodão-nutrição, Adubação foliar, Cotton fertilization, Foliar-fertilization
Citação
FREITAS, Roberto José de; LEANDRO, Wilson Mozena; CARVALHO, Maria da Conceição Santana. Efeito da adubação potássica via solo e foliar sobre a produção e a qualidade da fibra em algodoeiro (Gossypium hirsutum L.). Pesquisa Agropecuária Tropical, Goiânia, v. 37, n. 2, p. 106-112, abr./jun. 2007. Disponível em: <https://www.revistas.ufg.br/pat/article/view/1835/1746>.