Resumo

RODRIGUEZ-CORREA, Dania; BONET-PEREZ, Camilo; MOLA-FINES, Bárbara  e  GUERRERO-POSADA, Pedro A.. Determination Crops Coefficients of Bean for Conditions of the Central Provinces in Cuba. Rev Cie Téc Agr [online]. 2023, vol.32, n.2  Epub 13-Mar-2023. ISSN 2071-0054.

Water needs of crops are determined by climate demand and crop type, these two parameters are interrelated through Crop Coefficient (Kc). It varies in time because of the factors that influence in the crop development. The objective of the research was to determine bean Kc under the conditions of the Cuban central provinces. The study was carried out in the Cooperative Production Basic Unit (UBPC) "Victoria II", belonging to the Agricultural Enterprise Camagüey. Center pivot machines were used on red Fersalitic soil, where samplings of soil moisture were made every five days with TDR-300. Crop evapotranspiration (ETc) was determined taking into account the irrigation made and the usable rain during the cropping period. Kc values were calculated starting from the relationship of moisture balance every five days and the results were validated. These results showed the increase in ETc during the flowering and pod formation stages with a value of 3.98 mm/day. The Kc obtained were 0.45 (Kc initial), 1.00 (Kc mid) and 0.38 (Kc end) and in their validation, a constant trend was observed in the behavior of the Kc results, while their variation in relation to the results of the research stage is maintained in a range of less than 10 %. It was concluded that Kc parameters obtained can be used for bean irrigation scheduling under the conditions of the central provinces.

Palavras-chave : Irrigation Scheduling; Efficiency; Water Needs.

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