Irrigation requirements of tobacco nursery.

Juan G. R., V. P. Alvarez and S. L. Leon. Irrigation requirements of tobacco nursery.

Hydraulic Engineering Vol. 19(3):66-67, Havana , Cuba 1998.

The irrigation requirements of tobacco in the traditional nursery on soil and technical nursery on phlegm substratum, was determinate. The net irrigation requirements for each irrigation in the traditional nursery varies from 30 to 120 m3/ha for the different phases of the seedlings and from 35 to 60 m3/ ha for the technical nursery. The total net irrigation and the seedling production was 2385 m3/ha and 564 seedlings and 1865 m3/ha and 685 seedlings respectively. The most critical phase was been seedtime-germination, because a water deficit in this phase reduce significant the yield in the seedlings.

Net water requirement in (m3/ha) Irrigation frequency by soil type Phases of Seedling in days
Ferrallitic Quarcitic Ferrallitic Red Brown
30 – 50 2 time/day 2 time/day 1-2 time/day 0 – 13
50 – 70 1 time/day 1 time/day 1 time/day 14 – 17
70 – 120 1 time/2-3 days 1 time/2-3 days 1 time/2 days 18 – 39
70 – 100 4-6 irrigation/phase 6 irrigation/phase 1 time/4-6 days 40 – 60
2 385 Net average total water requirement in m3/ha for the cycle of seedling
40 – 48 Total irrigation for the cycle of seedling
564 Seedling production/m2

Table 2.1. Water requirement and frequency of irrigation in traditional tobacco nursery.

 

Net water requirement in (m3/ha) Phase of Seedling in days Irrigation Frequency for Phlegm substratum Phases of seedling
35 0 – 13 2 time/day Sowing-germination
50 14 – 17 1 time/day 1 stage of growth
60 18 – 34 1 time/ 2 days 2 stage of growth
60 35 – 55 6 irrigation/phase Pull up
1 865 Net average total water requirement in m3/ha for the cycle of seedling
36 – 42 Total irrigation for the cycle of seedling
685 Seedling production/m2

Table 2.2. Water requirement and frequency of irrigation in technical nursery.

 

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