The aim of the research is to decrease ecological loadings on irrigated agrolandscapes and to increase the efficiency of irrigative land reclamation at tomato growing due to development and introduction the technology of drip irrigation using electro-chemically activated water (ECAW). The research was conducted in 2010-2012 in Volgograd region at the light-chestnut loam soils. The studying factors were (A) periodicity of ECAW applying during vegetation period of tomatoes including the variants without ECAW and applying each fifth, forth, and third irrigation, and (B) discharge regime of ECAW within a single watering according to four variants: 1 – discharge of anolyte (AN) (redox potential from + 570 to + 600 ìV and ðÍ 5.1-5.3) by the volume of 50 % of the whole irrigation rate (IR) followed by 50 % of non-activated irrigation water (IW), 2 – discharge of AN (25 % of IR) followed by IW (50 % of IR) and then catholyte (CAT) (redox potential from – 220 to – 250 ìV and ðÍ 7.8-7.9) (25 % of IR), 3 – discharge of AN (10 % of IR) followed by IW (50 % of IR) and then CAT (40 % of IR), 4 – discharge of IW (50 % of IR) followed by CAT (50 % of IR). The study found that seasonal water consumptive rate of tomato using ECAW varied from 5060 to 5703 m³/ha for the yields of 78.5-97.6 t/ha. The optimum of water use for yield formation was determined. Its mean value was 58.1 m³/t. The optimum was affected by applying ECAW in the first and every forth irrigation; as well as the alternating discharge of anolyte and catholyte in the ratio of 1:4. To determine the values of bioclimatic coefficients considering the impact of ECAW on water consumption in every period of growing and development of tomato plant, we have established the regression relation which could be use for solving the objectives of operational planning for irrigation of tomato plants according to known calculating schemes and algorithms.
Keywords: tomato, drip irrigation, electro-chemical activation, water consumption, coefficient of water consumption, yield.
