Data/hora: 22/06/2024 19:44:52

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	31/01/1996	
Data da última atualização: 	31/01/1996	
Autoria: 	PORTER, W. M.; ABBOTT, L. K.; ROBSON, A. D.	
Título: 	Effect of rate of application of superphosphate om population of vesicular arbuscular endophytes.	
Ano de publicação: 	1978	
Fonte/Imprenta: 	Australian Journal of Experimental Agriculture and Animal Husbandry, v.18, n.93, p.573-578, Aug. 1978.	
Idioma: 	Inglês	
Conteúdo: 	The effect of altering the rate of superphosphate application on the population of vesicu-
lar arbuscular endophytes in a pasture soil was studied during 1976. Between 1950 and 1965 the pasture near Bakers Hill, Western Australia, had received an average of 150 kg superphosphate ha-1 year-1. For the ten years prior to 1976, five rates of superphosphate were applied to plots within the pasture. Varying the rate of superphosphate affected the number of VA endophyte spores. Adding 56 kg superphosphate ha-1 year-1 increased spore numbers by 40 per cent compared with the unfertilized plots. Spore numbers in plots receiving higher rates of superphosphate than 56 kg ha-1 were similar to those in unfertili-
zed plots. The relative abundance of spores of the four endophyte species found (Glomus monosporus, Acaulospora laevis, Gigaspora sp. and "White reticulate") was unaffected by superphosphate applications. In a glasshouse experiment vesicular arbuscular endo-
phytes from plots that had received the highest rate of superphosphate (224 kg ha-1 year-1) did not differ from those which had received no superphosphate in their ability to infect and increase the phosphorus uptake and growth of clover. It was concluded that altering the rate of superphosphate application on an old; adequately fertilized pasture does not affect the infectivity or effectiveness of the vesicular arbuscular edophyte population.	
Palavras-Chave: 	Aplicacao; Application; Pasture; Super fosfato; Vesicular arbuscular endophytes.	
Thesagro: 	Pastagem.	
Thesaurus Nal: 	superphosphate.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (30535-1) - ADD - SP - -- - SP1556 -  - 1556 - DIS