Water Balance Components in Covered and Uncovered Soil Growing Irrigated Muskmelon

Soil Water Storage Temporal Stability With and Without Outliers

“…Water storage at a certain site results from a set of hydrological processes that occur at different spatial scales (Kachanoski & De Jong, 1988). Internal drainage and capillary rise are water flows that occur in the soil volume explored by the crops (Timm et al, 2002;Cruz et al, 2005, Brito et al, 2009, Salvador et al, 2012, Libardi et al, 2015, which are influenced by soil texture, structure and morphology.…”

Climatic and Soil Water Balances for the Melon Crop

“…This region stands out for the great productive potential, particularly with the melon crop (Cucumis melo L.), responsible for 95% of the national production (IBGE, 2016). In regions where the scarcity of water resources prevails in most of the time, special care must be taken with respect to water use and management, since it is a limiting factor in the production of agricultural crops (Libardi et al, 2015). This way, the measurement of the water requirement of a crop should be made, always when possible, based on parameters obtained in situ (Libardi et al, 2015), because they control the availability of water to plants (Hartmann et al, 2012).…”

“…In regions where the scarcity of water resources prevails in most of the time, special care must be taken with respect to water use and management, since it is a limiting factor in the production of agricultural crops (Libardi et al, 2015). This way, the measurement of the water requirement of a crop should be made, always when possible, based on parameters obtained in situ (Libardi et al, 2015), because they control the availability of water to plants (Hartmann et al, 2012). According to the same authors, changes in the hydraulic soil properties influence the water supply and the consumption by transpiration and, thus, affect the soil water balance.…”

“…Nevertheless, since it is a generalized recommendation for completely different situations, the climatic water balance may not represent the actual conditions of water in the soil, and the greatest disadvantage in this type of balance is the high spatial variability of the climatic components (Libardi et al, 2015). The main component for the determination of climatic water balance is the evapotranspiration, which can be estimated through various physical and empirical models, such as Thornthwaite (Th), Penman-Monteith (P-M) (Bruno et al, 2007) and Hargreaves and Samani (H-S) (Arellano & Irmak, 2016), among others.…”

Influência de plantas de cobertura no balanço de água no solo sob rotação de culturas em plantio direto e preparo convencional

“…Portanto, a avaliação do comportamento hídrico de culturas comerciais, além de determinar o consumo médio de água com a finalidade de projetar sistemas de irrigação, determinam-se também os períodos de escassez de água no solo, que são de grande importância para a seleção de variedades e caracterização do potencial de plantio de acordo com a região, buscando minimizar os custos de produção (VIEIRA, 1984). (BRITO et al, 2009;MOTA et al, 2010;SILVA et al, 2014;LIBARDI et al, 2015;ZHANG et al, 2016).…”