Léon M., et al. Maximum and real evapotranspiration of the garlic crop in the west region.
Research Institute of Irrigation and Drainage. Technical Report, 1989, Cuba.
In the Horticultural Experiment Station “Lillian Dimitrova” in the province of Havana, was studied the water needs of the garlic crop in a red Ferrallitic soil. The maximum evapotranspiration was determined in lisimeter of compensation type, real evapotranspiration was determined in plots distributed in randomized blocks. The timing of irrigation was established from the dynamics of the ETM and soil moisture in the parcel which was irrigated by the gravimetric method. It was found that the maximum evapotranspiration of the garlic crop ranges from 330 to 400 mm. The real evapotranspiration according to the treatments under study is from 300 to 380 mm.
The total water requirement is 2400 to 2700 m3 / ha and the partial water requirements from 190 to 216 m3, the number of irrigation is 14 to 15.The soil wetting depth for to make the irrigation is 20 cm. from sowing until the formation of fruit and 30 cm. since the formation of fruit until the end of the crop cycle. The optimal timing of irrigation is achieved when soil moisture drops to 85% of field capacity, which is the economic limit where you get the best return. Bioclimatic evapotranspiration coefficients have values of 0.20 for the period from sowing to the establishment of plants, 0.49 for vegetative growth period, 0.62 for the formation of the bulb and 0.30 from the maturation until harvest.