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| Zonta,João Henrique; Martinez,Mauro Aparecido; Pruski,Fernando Falco; Silva,Demetrius David da; Santos,Marcelo Rocha dos. |
| O processo de infiltração é influenciado pelas condições da superfície do solo e pela precipitação pluvial. O objetivo deste trabalho foi avaliar a influência de aplicações sucessivas de precipitações pluviais com diferentes perfis na formação do encrostamento superficial e, consequentemente, na taxa de infiltração de água em solo sem cobertura e com cobertura. Foram aplicadas três precipitações pluviais sucessivas para cada perfil de precipitação pluvial, em intervalos de 24 h, sendo usados os perfis de precipitação pluvial constante, exponencial decrescente, duplo exponencial adiantado e atrasado, com uma lâmina média de 55 mm por aplicação. Buscou-se ajustar um fator de decaimento da taxa de infiltração (Ti) em função da energia cinética acumulada da... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cobertura do solo; Encrostamento superficial; Energia cinética da chuva. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200007 |
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| Donato,Sergio Luiz Rodrigues; Santos,Marcelo Rocha dos; Arantes,Alessandro de Magalhães; Ramos,Ariele Vaz. |
| Abstract The objective of this study was to assess the effect of planting densities, irrigation levels and bunch trimming on yield, fruit grading and water-use efficiency (WUE) of ‘Prata-Anã’ banana plants. The following factors were combined in a randomized block design: three irrigation levels (IL), 50, 75 and 100% crop evapotranspiration (ETc); four planting densities (PD)- 1,666; 2,083; 2,666 and 3,333 plants ha-1; and two bunch trimming treatments (BT), removal of either one or two hands from the bunch. The treatments were arranged in a split-split plot design. Irrigation level was assigned to main plots, PD to subplots and BT to sub-subplots, with four replicates. Measurements were made in the first production cycle. Removing two hands increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp.; Fruit grading; Water-use efficiency. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000506001 |
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| Coelho,Eugênio Ferreira; Santos,Marcelo Rocha dos; Donato,Sérgio Luíz Rodrigues; Cruz,Jailson Lopes; Oliveira,Polyanna Mara de; Castricini,Ariane. |
| ABSTRACT: Climatic uncertainties have compromised water resources, which influences irrigated agriculture. Irrigation is an important alternative to mitigate the effects of water scarcity. Partial root-zone drying (PRD) is a rational use of irrigation water. This study aimed to evaluate PRD for irrigation management of banana crop, cv BRS Princesa, under semi-arid conditions in Brazil. A field experiment was carried out with five treatments: one control (full irrigation) and four with 50 % reduction of water irrigation depth (WID) and frequencies alternating the side to be irrigated of the plant row of 0, 7, 14 and 21 days. Stomatal conductance, growth, yield and soil water status were evaluated. Results indicated that banana crop cv. BRS Princesa shows... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp.; Water use efficiency; Vapor pressure deficit; Irrigation deficit. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500362 |
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| Magalhães,Diogo Barreto; Donato,Sérgio Luiz Rodrigues; Santos,Marcelo Rocha dos; Brito,Cleiton Fernando Barbosa; Fonseca,Varley Andrade; Souza,Bruno Soares de. |
| Abstract Yield-improving and water-saving techniques assume great importance in the cultivation of banana plants under semiarid regions, prone to greater climate variability. The objective of this study was to evaluate yield and water-use efficiency (WUE) response of ‘Prata-Anã’ banana plants to combinations of plant densities and irrigation levels: three irrigation levels, 50, 75 and 100% crop evapotranspiration (ETc), and four plant densities, 1,666 (3.0 x 2.0 m), 2,083 (3.0 x 1.6 m), 2,666 (3.0 x 1.25 m) and 3,333 (3.0 x 1.0) plants ha-1, evaluated in two production cycles. The treatments were laid out in a randomized block design with four replicates. Increasing plant density up to 3,333 plants ha-1 induced reductions in number of leaves at harvest and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp.; Water productivity; Dense planting. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000506002 |
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