Climate risk to peanut cultivation in Brazil across different planting seasons
Nenhuma Miniatura disponível
Data
2021-01-01
Autores
de Oliveira Aparecido, Lucas Eduardo
Lorençone, João Antonio
Lorençone, Pedro Antonio
de Meneses, Kamila Cunha [UNESP]
da Silva Cabral de Moraes, Jose Reinaldo [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
BACKGROUND: Peanuts are widely grown in Brazil because of their great importance in the domestic vegetable oil industry and the succession of sugarcane, soybean and maize crops, contributing to soil conservation and improvement in agricultural areas. Thus, the present study aimed to determine the zoning of peanuts' climatic risk by estimating the water requirement satisfaction index (WRSI) for the crop in Brazil. We used a historical series of data on average air temperature and rainfall between 1980 and 2016. Reference evapotranspiration was estimated using the method of Thornthwaite, and we subsequently calculated crop evapotranspiration and maximum evapotranspiration. Water balances for all stations were calculated using the method of Thornthwaite and Mather, with an available water capacity in the soil of 15, 30 and 45 mm. The definitions of suitable, unfit and restricted areas and the planting season were performed using the WRSI. RESULTS: Brazil has low climatic risk areas for growing peanuts throughout the year, except for winter. The country reveals that 88.19%, 97.93%, 99.16% and 39.25% of its area is suitable for planting peanuts on planting dates in spring, summer, autumn and winter, respectively. CONCLUSION: Brazil has a large part of the areas favorable to the planting of peanuts. The maximum availability of soil water at a depth of 15, 30 and 45 mm does not influence regions with respect to peanut growing in Brazil. The states of Piauí, Ceará and Bahia are the most unsuitable on the winter planting date, with an average WRSI of 0.22. © 2021 Society of Chemical Industry.
Descrição
Palavras-chave
crop modeling, Crop rotation, edapho-climatic aptitude, principal component analysis, water balance
Como citar
Journal of the Science of Food and Agriculture.