Data/hora: 26/07/2024 22:46:17

Biblioteca(s): 	Embrapa Unidades Centrais.	
Data corrente: 	26/04/2002	
Data da última atualização: 	07/10/2003	
Autoria: 	HEWITT, G. B.	
Título: 	Grazing Management as Ameans of Regulatiing Spittlebug (Homoptera:Cercopidae) Numbers in Central Brazil	
Ano de publicação: 	1988	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, v.23, n.7, p. 697-707, jul. 1988.	
Idioma: 	Inglês	
Conteúdo: 	Short duration, high intensity grazing was evaluated as a method of reducing spittiebug numbers in central Brazil. Intense grazing pressure during the nymphal period resulted in a temporary reduction in nymphal density but aciditiorrai hatching of eggs allowed the density to increase. Intense grazing during the, last generation of adults, prior to the start of the dry season drastically reduced the, nymphal population. Grazing by cattle in general provided an unsuitable habitat for spittiebug egg survival as both grass height and plant cover decreased under ali grazing trealments. In freavily infested pastures (> 20 nymphs/m2) it is recorrurrended to graze the grass short: (< 10 em) during the last gencration of adults (April-July) in order to discourage oviposition by adults laying diapause eggs and to expose eggs to detrimental conditions during the dry season. In pastures with low spittlebug density (< 20 nymphs/m 2 ) it is recommended to maintain the forage height at 15 em - 20 em during the rainy season for maximum production and efficient use of the forage resource.

Palavras-Chave: 	Grazing pressure; nymphal density; spittlebug control.	
Thesagro: 	Brachiaria Decumbens.	
Thesaurus Nal: 	oviposition.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
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