Taxas de decomposição de resíduos de espécies de cobertura em latossolo vermelho distroférrico
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Data
2006-04
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Editor
João Batista Duarte
Resumo
The experiment was conducted at Embrapa Arroz e
Feijão, Santo Antônio de Goiás, Goiás State, Brazil, on a
dystrophic Oxisol under no-tillage system. The following species
were used: Brachiaria, Brachiaria/corn consortium, pigeon pea,
millet, guineagrass, sorghum, and Stylozanthes. The phytomass
was cut, left on the soil and samples were collected, placed in
nylon bags (litter bags), and periodically weighted to assess mass
losses and decomposition rates, until 150 days after cutting. The
relative losses of the residues, referred from the initial time to
150 days of decomposition, were in decreasing order: i) grasses –
sorghum (80%) > guineagrass (64%) > millet (58%) > single
Brachiaria (56%) and Brachiaria consortium (48%); and ii) leguminous
– Stylozanthes (72%) > pigeon pea (65%). When the
relative losses were projected to 360 days, the following order
was found: i) grasses – sorghum and Brachiaria consortium (86%)
> guineagrass (69%) > millet (65%) > single Brachiaria (62%);
and ii) leguminous – Stylozanthes (83%) > pigeon pea (79%).
Descrição
Palavras-chave
Gramíneas tropicais, Leguminosas tropicais, Plantio direto, Cerrados, tropical grasses, Tropical leguminous, No-till
Citação
KLIEMANN, Huberto José; BRAZ, Antonio Joaquim Pereira Braga; SILVEIRA, Pedro Marques da. Taxas de decomposição de resíduos de espécies de cobertura em latossolo vermelho distroférrico. Pesquisa Agropecuária Tropical, Goiânia, v. 36, n. 1, p. 21-28, jan./abr. 2006. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2165/2116>.