Engenharia Agrícola - Artigos

URI permanente para esta coleçãohttps://locus.ufv.br/handle/123456789/11739

Navegar

Filtros

20042

Configurações

Autor: search.filters.author.Sediyama, Gilberto ChohakuData final: 2009Assunto: search.filters.subject.Semi-arid

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
  • Imagem de Miniatura
    Item
    Guidelines for irrigation scheduling of banana crop in São Francisco Valley, Brazil II — Water consumption, crop coefficient, and physiologycal behavior
    (Revista Brasileira de Fruticultura, 2004-12) Ramos, Clovis Manoel Carvalho; Sediyama, Gilberto Chohaku; Bassoi, Luís Henrique; Teixeira, Antonio Heriberto de Castro; Lima Filho, José Moacir Pinheiro; Silva, José Antonio Moura e; Silva, Emanuel Elder Gomes da
    The water consumption and the crop coefficient of the banana cv. Pacovan were estimated in Petrolina County, northeastern Brazil, in order to establish guidelines to irrigation water management. Evaluations were carried out since planting in January 1999 to the 3rd harvest in September 2001 on a microsprinkler irrigated orchard, with plants spaced in a 3 x 3 m grid. Average daily water consumption was 3.9, 4.0, and 3.3 mm in the 1st, 2nd and 3rd growing seasons, respectively. Crop coefficient values increased from 0.7 (vegetative growth) to 1.1 (flowering). Even with high soil water availability, transpiration was reduced due to high evaporative demand.
  • Imagem de Miniatura
    Item
    Guidelines for irrigation scheduling of banana crop in São Francisco Valley, Brazil — Root distribution and activity
    (Revista Brasileira de Fruticultura, 2004-12) Ramos, Clovis Manoel Carvalho; Sediyama, Gilberto Chohaku; Silva, Emanuel Elder Gomes da; Silva, José Antonio Moura e; Bassoi, Luís Henrique
    In order to establish guidelines for irrigation water management of banana cv. Pacovan (AAB group, Prata sub-group) in Petrolina County, northeastern Brazil, the root distribution and activity were measured on an irrigated plantation, in a medium texture soil, with plants spaced in a 3 x 3 m grid. Root distribution was evaluated by the soil profile method aided by digital image analysis, while root activity was indirectly determined by the changing of soil water content and by the direction of soil water flux. Data were collected since planting in January 1999 to the 3rd harvest in September 2001. Effective rooting depth increased from 0.4 m at 91 days after planting (dap), to 0.6 m at 370, 510, and 903 dap, while water absorption by roots was predominantly in the top 0,6 m