Juan G.R. Localized irrigation in tobacco
Juan G. R. “Tobacco irrigation “Page 135-144, Madrid Spain, 2002.
The microjet irrigation in technical tobacco nurseries using filter cake as substrate has been successful and has enabled the acquisition more than 650 net seedlings/m2. The best exploitation in the localized irrigation that was used in a comparative method the drip irrigation and the microjet irrigation in technical nurseries, it has been possible to use microjet 1 mm x 180 ° spaced 1.2 m, with a discharge of 41.0 L / h for a working pressure of 150 kPa.
In plantations of covered dark tobacco irrigated with drip, it is using lateral irrigation spaced 0.9 m with emitters to 0.6 m, with an average discharge of 4.1 L / h and a working pressure of 125 kPa.
Drip irrigation in tobacco has enabled a high productivity of labour, water saving, high yields and normal growth of the crop, when the drip is used according to the water requirements of tobacco, which is irrigated in a moderate way and water is managed with the use of low water requirements.
The high frequency of irrigation and low tension in the soil moisture is recommended in the cultivation of vegetables, but it is not recommended in tobacco, because the water management in drip irrigation is essential at different tobacco stages, which should employ long irrigation intervals and reduced irrigation water requirements, with greater importance in the period of growth and harvest.
With proper water irrigation management gives a good quality of the harvest and lowers water consumption from 15 to 20% of evapotranspiration. The total water irrigation applied is significantly reduced when using localized irrigation, with a best system efficiency.