Data/hora: 19/06/2024 17:12:43

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 19/10/2006
Data da última atualização: | 27/07/2018
Autoria: | MORAIS, H.; CARAMORI, P. H.; RIBEIRO, A. M. de A.; GOMES, J. C.; KOGUISHI, M. S.
Afiliação: | Heverly Morais, Instituto Agronômico do Paraná - IAPAR; Paulo Henrique Caramori, Instituto Agronômico do Paraná - IAPAR; Ana Maria de Arruda Ribeiro, Instituto Agronômico do Paraná - IAPAR; José Carlos Gomes, Instituto Agronômico do Paraná - IAPAR; Mirian Sei Koguishi, Instituto Agronômico do Paraná - IAPAR.
Título: | Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil.
Ano de publicação: | 2006
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 5, p. 763-770, maio 2006
Idioma: | Inglês
Notas: | Título em português: Caracterização microclimática e produtividade de cafeeiros sombreados com guandu no Sul do Brasil.
Conteúdo: | Recent studies on coffee (Coffea arabica L.) cultivation in agroforestry systems in Southern Brazil have shown the potential of partial shading to improve management of this crop. The objective of this work was to evaluate microclimatic conditions and their effects on coffee production of plants shaded with pigeon pea (Cajanus cajan) in comparison to unshaded ones, from May 2001 to August 2002 in Londrina, State of Paraná, Brazil. The appraised microclimatic characteristics were: global radiation, photosynthetic and radiation balance; air, leaf and soil temperatures; and soil humidity. Shading caused significant reduction in incident global solar radiation, photosynthetically active radiation and net radiation, and attenuated maximum leaf, air and soil temperatures, during the day. Shade also reduced the rate of cooling of night air and leaf temperatures, especially during nights with radiative frost. Soil moisture at 0-10 cm depth was higher under shade. The shaded coffee plants produced larger cherries due to slower maturation, resulting in larger bean size. Nevertheless, plants under shade emitted less plagiotropic branches, with smaller number of nodes per branch, and fewer nodes with fruits, resulting in a large reduction in coffee production. These results show the need to find an optimal tree density and management that do not compromise coffee production and protect against extreme temperatures.
Palavras-Chave: | coffee production; frost protection; produção de cafeeiros; proteção contra geada.
Thesagro: | Cajanus Cajan; Coffea Arábica; Sombreamento.
Thesaurus Nal: | photosynthetically active radiation; shade.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/107213/1/Microclimatic.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (36209-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS