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Fertilização outonal de pastagem nativa diferida sobre solos rasos

Authors: J. K. Fedrigo; C. Nabinger; M. Fett Pinto; T. R. Kunrath; N. de Bem Bidone1 de Bem Bidone; C. E. Gonçalves da Silva; E. Guerra;

Fertilização outonal de pastagem nativa diferida sobre solos rasos

Abstract

O vazio forrageiro hibernal é uma questão recorrente nas pastagens naturais sul brasileiras, gerando deficiências nutricionais aos herbívoros mantidos em tais condições, sendo mais determinante em solos rasos. Foram estudadas 12 combinações de fertilização e calagem associadas ao diferimento outonal de pastagem natural em solo de basalto superficial, visando acumular forragem para ser utilizada no inverno. Não ocorreram diferenças significativas (P<0,05) na massa de forragem total (MF) e verde (MFV) em função dos tratamentos avaliados. Houve efeito quadrático para MF e MFV de acordo com o tempo de diferimento, sendo que o máximo acúmulo aconteceu aos 96 dias (2965 Kg.ha-1 e 1446 Kg.ha-1, respectivamente). O material morto aumentou linearmente de acordo com o tempo. Com a análise multivariada pode-se observar que as variáveis estudadas foram influenciadas pela profundidade das parcelas. As de maior profundidade foram associadas a maior MF e menor quantidade de solo descoberto. Nas parcelas de solo mais raso (<5cm) houve predomínio de espécies ruderais, com valor forrageiro inferior às que predominavam em solos de maior profundidade.

Keywords

tipos produtivos, SF191-275, Agriculture (General), solo descoberto, Cattle, vazio forrageiro, solo de basalto superficial, SF1-1100, S1-972, Animal culture

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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!
0
Average
Average
Average
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