O. Garcia, Aleman L. Rice total water requirement in spring planting in Pinar del Rio province.
Taken from: Juan G.R, G. Dehoguez E and L. Tzenova. The Irrigation, Pág.125 – 137, Havana, Cuba, 1996
To calculate the irrigation regime of rice-growing in spring period for a cycle of 125 days, was used the year of 25% probability of total water requirement, calculated decennial from historical data of rainfall and evaporation in series no less than 20 years. The balance of the information is made for the crop life cycle and considers the average for rice areas in the Pinar del Rio province.
The total net water requirement for the cultivation of rice in dry soil preparation, planting dry in spring period is 8794 m3/ha for a crop cycle of 125 days. To calculate total gross water requirement should be considered an irrigation efficiency of 0.70%