Data/hora: 29/05/2024 09:53:40

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 21/05/1998
Data da última atualização: | 07/01/2015
Autoria: | EDWARDS, J. H.; BRUCE, R. R.; HORTON, B. D.; CHESNESS, J. L.; WEHUNT, E. J.
Título: | Soil cation and water distribution as affected by NH4NO3 applied through a drip irrigation system.
Ano de publicação: | 1982
Fonte/Imprenta: | Journal of the American Society for Horticultural Science, v. 107, n. 6, p. 1142-1148, 1982.
Idioma: | Inglês
Conteúdo: | 'Redglobe' peaches [Prunus persica (L.) Batsch] were grown under drip irrigation. Applications of NH4NO3 through the irrigation system were compared with broadcast applications. Soil pH, where NH4NO3 was applied through the irrigation system, decreased in the top 30 cm from 6.2 to 3.7 pH in the zone wetted by emitters that had been in place for 2 years, and from 6.2 to 4.5 pH in the zone where emitters had been in place for 6 months. Aluminum concentration in wetted zones increased from 0.01 to 1.45 meq/100 g of soil after 2 years and from 0.02 to 0.73 meq/100 g of soil after 6 months of NH4NO3 application through drip irrigation. Soil Ca and Mg concentrations were reduced in both wetted zones, but the greatest decrease occurred in the 2-year emitter site. The addition of NH4NO3 in the irrigation water substantially reduced root growth in the vicinity of the emitters, irrigation water application, and fruit yield, because of the high Al concentration in the wetted zone.
Palavras-Chave: | Peach.
Thesagro: | Irrigação; Pêssego.
Thesaurus Nal: | irrigation.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (2422-1) - ADC - SP - PP - S 11165 -  - 0011165 - DIS