Water & Irrigation
-Valle G. R., G. R. Juan, C. A. Díaz. Irrigation regime of dark tobacco at sun of Cabaiguan 7 variety.
Hydraulic Engineering Vol. 15 (3):67-74, Havana, Cuba 1994.
During 1987-1989 a study was carried out at the Tobacco Experiment Station in Cabaiguan, to test the variety “Cabaiguan 7” of dark tobacco on stick under the sun, at four levels of humidity in a brown carbonated soil. The tobacco was irrigated with sprinkler irrigation for an average yield of 2.5 t/ha and it was found that the optimal treatment of irrigation was obtained when the soil moisture decreases to 85-85-80 % of the field capacity in the phase from transplantation to 8 leaves, from 8 leaves to main cut and main cut up the harvest of leaves of second cut tobacco. For this treatment, for a medium dry year, a series from 7 to 8 irrigations was applied. These were distributed in 2, 2 and 3-4 irrigations for the first, second and the third harvest phases respectively. The total water requirement was of 1591 m3/ha with a suspension of irrigation from 20 to 25 days before the main cut, before then irrigation the remains. The total evapotranspiration reached an average of 324 mm for a vegetative cycle cultivation of 130 days.