Data/hora: 24/06/2024 23:38:50

Biblioteca(s): | Embrapa Meio Norte / UEP-Parnaíba.
Data corrente: | 10/06/1992
Data da última atualização: | 10/06/1992
Autoria: | FELD, S. J.; MENGE, J. A.; STOLZY, L. H.
Afiliação: | Department of Plant Pathology and Department of Soil and EnvironmentalScience, University of California.
Título: | Influence of Drip and Furrow Irrigation on Phytophthora root rot of citrus under field and greenhouse conditions.
Ano de publicação: | 1990
Fonte/Imprenta: | Plant Disease, v.74, n.1, p.21-66, jan. 1990.
Idioma: | Inglês
Conteúdo: | The influence of drip and furrow irrigation on the distribution of populations of Phytophthora parasitica and citrus roots in soil was examined under field conditions and in the greenhouse and lathhouse. Duringa 2-yr field study in a 70-yr citrus orchard, the soil population of P. parasitica was significantly lower under drip irrigation than under furrow irrigation; however, this difference was evident only during the summer months when the fungus was most active. The abundance of citrus roots under furrow irrigation increased with distance from the furrow center. Citrus roots under drip irrigation were uniformly distributed in the area wetted by the emitter. Distribution of P. parasitica propagules correlated directly with the distribution of citrus feeder oot rot of citrus seedings was most severe where seedings were wateredby drip irrigation or kept constantly moist by furrow irrigation. Seedings that received water by furrow irrigation that allowed the soil todry sufficiently between irrigation were able to produce more feeder roots than seedings grown under drip irrigation. Data obtained from greenhouse and lathhouse studies that the commonly recommended method of furrow irrigation that allows the soil dry to -50 to - 70 cb um between irrigation favors the host plant and reduces damage by P.parasitica more than the other irrigation methods investigated.
Palavras-Chave: | Citros; Drip irrigation; Field; Furrow; Nursery; Root; Sulco.
Thesagro: | Campo; Irrigação por Gotejamento; Raiz; Viveiro.
Thesaurus Nal: | Citrus.
Categoria do assunto: | --
Registro original: | Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP)
Exemplares: | CPAMN-UEPP - (420-1) - ADD - SP - -- - 92.04374 -  - 1992.04374 - DIS