Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil
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.
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Embrapa Secretaria de Pesquisa e Desenvolvimento
2006
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oai:scielo:S0100-204X20060005000072006-08-18Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern BrazilMorais,HeverlyCaramori,Paulo HenriqueRibeiro,Ana Maria de ArrudaGomes,José CarlosKoguishi,Mirian Sei Coffea arabica Cajanus cajan frost protection photosynthetically active radiation coffee production shade 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.info:eu-repo/semantics/openAccessEmbrapa Secretaria de Pesquisa e DesenvolvimentoPesquisa Agropecuária BrasileiraPesquisa Agropecuária Brasileira v.41 n.5 20062006-05-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000500007en10.1590/S0100-204X2006000500007 |
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Morais,Heverly Caramori,Paulo Henrique Ribeiro,Ana Maria de Arruda Gomes,José Carlos Koguishi,Mirian Sei |
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Morais,Heverly Caramori,Paulo Henrique Ribeiro,Ana Maria de Arruda Gomes,José Carlos Koguishi,Mirian Sei Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
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Morais,Heverly Caramori,Paulo Henrique Ribeiro,Ana Maria de Arruda Gomes,José Carlos Koguishi,Mirian Sei |
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Morais,Heverly |
title |
Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
title_short |
Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
title_full |
Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
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Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
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Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil |
title_sort |
microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in southern brazil |
description |
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. |
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Embrapa Secretaria de Pesquisa e Desenvolvimento |
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2006 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000500007 |
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