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Mulching effects on soil evaporation, crop evapotranspiration and crop coefficients: a review aimed at improved irrigation management
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Orientador(es)
Resumo(s)
Mulching is a widely adopted agronomic practice, often used as a water-saving strategy due to its effectiveness in reduc-
ing soil evaporation. However, effects vary depending on the materials used and the extent of mulch soil coverage.
Consequently, the impacts of mulching may differ considerably across production systems, preventing the establishment
of reliable guidelines for irrigation water management. The objective of this study is to comprehensively review existing
literature that compares mulching versus no-mulching management, aiming to gain a deeper understanding of the effects
of mulching on soil evaporation (Es), crop coefficients (Kc), and actual crop evapotranspiration (ETc act). 58 studies were
selected. The impact of mulching was particularly notable in the early crop stages, when the soil is not fully covered.
Data in literature shows that plastic films were more effective in reducing Kc than organic materials. However, this effect,
while evident during the early crop stages, diminished throughout the rest of the season. Black plastic films were more
effective during the early crop stages compared to other colored plastics, particularly relative to the decrease of Kc, but
this effect also diminishes during the rest of the season. Building upon these findings, the study provides guidelines for
expected reductions in Kc values based on the type of crop, crop stage, and the mulching material most used in each
cropping system.
Descrição
Palavras-chave
mulching effects soil evaporation evapotranspiration irrigation management
Contexto Educativo
Citação
Ramos, Tiago B., et al. «Mulching Effects on Soil Evaporation, Crop Evapotranspiration and Crop Coefficients: A Review Aimed at Improved Irrigation Management». Irrigation Science, vol. 42, n.o 3, maio de 2024, pp. 525–39. https://doi.org/10.1007/s00271-024-00924-8
Editora
Springer