Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 2
Written by Tamara LEAH, Goshgar MAMMADOV, Turan MAMMADOV
The article presents the results of researches on the influence of water consumption and the length of the irrigation furrow on the leaching of nutrients and humus from irrigated soils of dry subtropics of Azerbaijan under tomato cultivation. The effect of different fertilization systems on tomato yields was also investigated. With a slope in a 100 - meter furrow at a water flow rate of 3.0 l/s, the content of leachable biogenic elements (N, P) and humus with soil was 0.03% for nitrogen, 0.02% for phosphorus and for humus 0.07%. Increasing water flow from 3.0 l/s up to 3.5 l/s negatively affects the leaching of humus and nutrients from the soil. With an increase in water consumption to 3.5 l/s, these indicators increased markedly by 0.01% for nitrogen and phosphorus, and by 0.02% for humus. It was found that with an increase in the length of the furrow to 200 meters, at the same norms, the flow of water, leaching of humus and nutrients was not observed. Using of an organic-mineral fertilizer system had a positive effect on the yield of tomato. So, in the free-fertilized variant, the tomato yield was 0.32 t/ha per at 100 m furrow.
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