The tobacco irrigation, it effect on the yield and quality of the harvest

Juan G. R. The tobacco irrigation, it effect on the yield and quality of the harvest.

Research Institute of Irrigation and Drainage.Dissertation for to get the Second Doctorate. Havana, Cuba. 1995.

During the 1970-1995 period, was studied under the Cuban conditions, the water requirements and irrigation techniques commonly employed in nurseries and tobacco plantations, as well as the effect of irrigation on crop, yield and quality of the harvest. It was found that the seedling total water requirement was 2385 and 1865 m3/ha and from 40 to 48 and from 36 to 42 the number of irrigation for the traditional and technical nursery respectively. In plantations, the evapotranspiration of the eight tobacco varieties in study range from 212 to 324 mm, with values in a middle transplant time from 1475 to 1726 m3/ha for the total water irrigation requirement, 133 to 360 m3/ha for the partial water irrigation requirement and from 6 to 8 irrigation in the year of the 25% probability of the total water requirement.

Perform irrigation at the right time enabled the increase in yields, in addition to improving product quality, with an average yield from 1.9 t/ha tobacco leaves harvest to 2.5 t / ha for the tobacco with two or three cuts of the plant. A mishandling of irrigation water by a defect or unduly, adversely affected the performance and quality of plantations and nurseries of tobacco. The moment and amount of irrigation water used, have more influence on the yield and quality of the harvest than irrigation techniques employed. Tobacco irrigation in the production enabled gain additional average of 228 $ / ha with a period of recovery in investment of 7.5 to 8.6 years, which shows that tobacco in the conditions of Cuba is an irrigation plant.

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