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Web Friendly Water & Irrigation |
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Water Requirement
Juan G. R. Irrigation requirements of commercial tobacco cultivars in Cuba.
Hydraulic Engineering. Vol.19 (2):7-12. Havana , Cuba 1998.
During a period of more 20 years in the Cubans field conditions, the irrigation requirements of commercial tobacco cultivars were studied. The evapotranspiration is from 220 to 271mm.The maximum evapotranspiration occurs before the first harvest, with 2,8 to 3,2mm/day.The total net irrigation requirement varies of 1475 to 1654 m3/ha.The net irrigation requirements in each irrigation is of 133 to 360 m3/ha. The irrigations are of 6,4 to 7,8 with an average distribution of: 3, 6 from stage of transplanting to 8-10 leaves, 2, 1 from 8-10 leaves to first harvesting. To use the irrigation in the optimal moment, make possible obtain average yield of 1.9 t/ha for Burley 37 variety, 2, 0 t/ha for Speight G-28 variety, 2, 0 t/ha for Criollo variety, 2, 1 t/ha for covered dark Corojo variety, 2, 2 t/ha for Pelo de Oro variety and increase the production more than 1 t/ha in comparison with no irrigated tobacco.
Table 2.5. Total and partial net water requirements in the tobacco culture
for the middle transplanting period.
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Commercial Tobacco Varieties |
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Net water requirements for phase of culture Tobacco Total (m3/ha) Varieties m3/ha I II III |
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‘Criollo’ |
1 524 |
147 - 177 |
260 - 307 |
260 - 174 |
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‘Speight G-28’ |
1 475 |
140 - 155 |
223 - 261 |
223 - 148 |
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‘Burley-37’ |
1 582 |
142 - 168 |
245 - 296 |
245 - 167 |
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‘Corojo’, Pinar del Rio. |
1 643 |
143 - 212 |
256 - 341 |
256 - 170 |
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‘Corojo’, Habana |
1 654 |
133 - 209 |
266 - 360 |
266 - 178 |
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‘Pelo de Oro’ |
1 630 |
188 - 216 |
271 - 352 |
271 - 206 |
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New Tobacco Varieties |
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‘H-7-5-1’ |
1 712 |
133 - 209 |
266 - 360 |
266 - 178 |
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‘H-16-34-1’ |
1 481 |
147 - 177 |
260 - 307 |
260 - 174 |
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‘Cabaiguán-7’ |
1 726 |
188 - 216 |
271 - 352 |
271 - 206 |
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Average 1 603 151 - 193 258 - 326 258 - 178 |
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+Table 2.6. Irrigation distribution for phases in the commercial tobacco
varieties for the middle transplanting period.
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Commercial tobacco varieties |
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Tobacco Irrigation distribution for culture phases Varieties Total I II III |
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‘Criollo’ |
7,0 |
3,8 |
2,0 |
1,2 |
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‘Speight G-28’ |
7,8 |
4,0 |
2,3 |
1,5 |
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‘Burley’ |
7,3 |
3,7 |
2,2 |
1,4 |
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‘Corojo’, P. del Río |
7,1 |
3,8 |
2,0 |
1,3 |
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‘Corojo’, Habana |
7,0 |
4,0 |
2,0 |
1,0 |
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‘Pelo de Oro’ |
6,4 |
2,4 |
2,1 |
1,9 |
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Mean 7,1 3,6 2,1 1,4 |
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