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Nucleus Animalium
Article . 2012 . Peer-reviewed
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Nucleus Animalium
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Nucleus Animalium
Article . 2012 . Peer-reviewed
Data sources: Crossref
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Interceptação de luz e índice de área foliar em relação a altura do dossel de gramíneas forrageiras

Authors: Leandro Galzerano; Euclides Braga Malheiros; Eliane da Silva Morgado; Ana Claudia Ruggieri;

Interceptação de luz e índice de área foliar em relação a altura do dossel de gramíneas forrageiras

Abstract

O objetivo deste trabalho foi determinar a existência de relação entre a interceptação da radiação fotosinteticamente ativa (IRFA) e o índice de área foliar (IAF) com a altura do dossel de gramíneas forrageiras. Estudou-se três capins de diferentes gêneros: capim-florona, um capim do gênero Cynodon, o capim-áries, um Panicum e o capim-braquiária decumbens, do gênero Brachiaria. Em cada capim foi utilizada uma área experimental de 35,0 m2. O experimento foi conduzido na Faculdade de Ciências Agrárias e Veterinárias/ Unesp, Campus de Jaboticabal, SP. Os capins foram mantido sob cortes a 5 cm do solo a cada 28 dias. Foram tomados 15 pontos amostrais sobre o dossel dos capins em fevereiro de 2010 quando os capins áries e Brachiaria decumbens estavam com 25 dias de rebrotação e o capim-florona com 24 dias de rebrotação, todos no terceiro corte. As variáveis avaliadas foram: altura do dossel, determinada com uso de régua graduada em centímetro; interceptação da radiação fotossinteticamente ativa e índice de área foliar, aferidos com sensor específico (AccuPAR Model LP – 80 PAR/LAI ceptometer). As três variáveis foram registradas no mesmo ponto amostrado. Os dados foram submetidos à análise de regressão e os resultados demonstram que a altura do dossel se correspondente positivamente com a interceptação da radiação fotossinteticamente ativa e o índice de área foliar em gramíneas forrageiras.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
gold