Data/hora: 14/06/2024 15:39:17

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 01/03/1996
Data da última atualização: | 01/03/1996
Autoria: | MacKAY, A. D.; GREGG, P. E. H.; SYERS, J. K.
Título: | A comparison of dicalcium phosphate and single superphosphate as phosphate sources for pasture.
Ano de publicação: | 1980
Fonte/Imprenta: | New Zealand Journal of Experimental Agriculture, v.8, n.1, p.7-11, 1980.
Idioma: | Inglês
Conteúdo: | The effect of commercially available dicalcium phosphate (DCP) and single superphos- phate on pasture production was evaluated in glasshouse and field trials. When compa- red on a unit-P basis, DCP (5.6% P) was slightly inferior (up to 10%) to superphosphate (8.6% P) in a glasshouse trial with ryegrass as the indicator plant; on a unit weight basis, DCP was only 60-70% as effective as superphosphate. No differences were obtained in the P concentration of the herbage obtained using the two materials. In a field trial on a P- responsive site, DCP and superphosphate gave similar increases in pasture production. Marked treatment differences were obtained for the P concentrations in ryegrass and clo- ver in the field trial, particularly in the first harvest and with ryegrass. No difference was ob- tained in the short-term residual effect of the two materials. The data obtained are interpre- ted in terms of the chemical and mineralogical composition, and water solubility of DCP.
Palavras-Chave: | Efetividade relativa; Fertilizacao; Fertilization; Lime; Pasture; Relative effectiveness.
Thesagro: | Fosfato; Pastagem.
Thesaurus Nal: | dicalcium phosphate; superphosphate.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (31109-1) - ADD - SP - -- - SP2127 -  - 2127 - DIS