The Effects of Garbage Leachate Composting on Concentration of Some Soil Solution Cations and Anions in the Different Irrigation Managements

The aim of this study was investigation the effects of garbage leachate compost on concentration of some soil solution anions in the different irrigation methods. The research was done by Split Split plot statistical design in randomized complete blocks design with three main treatments (irrigation) and two sub treatments (depth) and three times in the six-month periods. Main treatments include N: irrigation with well water such as control, I: Periodicity of irrigation with leachate and well water, C: mixing leachate and well water (25% leachate 75% well water) and sub treatments was including DI: surface drip irrigation and SDI: sub-surface drip irrigation. For targeted irrigation, in the plots building, planted the 36 Seedlings of PlatanusOrientalis and Robinia Pseudoacacia Umbraculifera with 2 years old randomly in the land with dimensions of 38 × 10 meters to the edge of the earth, and every tree seedlings were planted 2 meters and treatment operations began 4 months after the plants. The results showed a significant difference between periodicity and complex treatments with control one in the time duration, depth of applied leachate and irrigation management at the 5% level of Duncan test. The maximum amount of HCO3 -, SO4 2-, Cl- and Na in the mixing leachate and well water treatment compared to control treatment respectively achieved 10.8, 45.5, 56.6 and 25.82 percentages. Test results also showed that the amount of potassium in periodicity and complex treatments respectively 3.5 and 1.5 times increased compared to control. According to the results, the incorporation of compost leachate with irrigation water in the root zone of the plant to provide better environmental conditions, water and nutrition’s need in this zone and soil quality modification in the land space belt of cities with subsurface drip irrigation method seemed appropriate.