Data/hora: 18/06/2024 17:23:15

Biblioteca(s): | Embrapa Hortaliças; Embrapa Semiárido; Embrapa Unidades Centrais.
Data corrente: | 30/06/2000
Data da última atualização: | 31/08/2022
Autoria: | LIMA FILHO, J. M. P.
Afiliação: | JOSE MOACIR PINHEIRO LIMA FILHO, CPATSA.
Título: | Physiological responses of maize and cowpea to intercropping.
Ano de publicação: | 2000
Fonte/Imprenta: | Pesquisa Agropecuaria Brasileira, v. 35, n. 5, p. 915-921, maio, 2000.
Idioma: | Inglês
Conteúdo: | The effect of intercropping on plant water status, gas exchange and productivity of maize (Zea mays L.) cv. Centralmex, and cowpea (Vigna unguiculata L. (Walp)) cv. Pitiuba were evaluated under semi-arid conditions at the Embrapa-Centro de Pesquisa Agropecuária do Trópico Semi-Árido (CPATSA) at Petrolina, PE, Brazil. The treatments were: maize and cowpea as sole crops, at a population of 40,000 plants ha-1, and intercropped at a population of 20,000 plants ha-1. The results obtained in this paper appear to be related to the degree of competition experienced by the components, mainly for water and light. Maize intercropped had higher values of leaf water potential, stomatal conductance, transpiration and photosynthesis than as sole crop. Intercropped cowpea had higher values of leaf water potential but lower stomatal conductance, transpiration and photosynthesis than sole cowpea. Maize productivity increased 18% in relation to sole crop whereas a 5% decrease was observed with cowpea. Despite these facts the Land Equivalent Ratio obtained was 1.13 indicating intercropping advantage over the sole system. The higher partial Land Equivalent Ratio observed for maize suggests that this specie was the main component influencing the final productivity of the intercropping system studied.
Palavras-Chave: | Caupi; Consorciacao; Cowpea; Cultivar Centralmex; Cultivar Pitiuba; Feijao-de-corda; Maize; Plant soil relations; Plant water relations; Productivity; Relacao planta-agua; Relacao planta-solo; Sistemas de cultivo; Troca gasosa; Yield.
Thesagro: | Milho; Produtividade; Sistema de Cultivo; Vigna Unguiculata; Zea Mays.
Thesaurus Nal: | Corn; Cropping systems; gas exchange; intercropping; varieties.

Categoria do assunto:

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A Sistemas de Cultivo

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/182930/1/pab97-317.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/17294/1/pab97_317.pdf

Registro original: | Embrapa Semiárido (CPATSA)

Exemplares:

AI-SEDE - (17294-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPH - (18854-1) - EMB - AP - -- - 630.5 -  - 630.5 - DIS
CPATSA - (53743-1) - UPC - AP - PP -  -  -  - DIS