EFFECT OF POOR QUALITY IRRIGATION WATER THROUGH DRIP SYSTEM ALONGWITH FARM YARD MANURE AND PLASTIC MULCH ON CHANGES IN VERTISOL AND PERFORMANCE OF TOMATO CROP
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Date
1995
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AAU, Anand
Abstract
A field experiment was conducted at Narmada Irrigation Research Project, Khandha (Karjan) on Vertisols (heavy black) to study the effect of poor quality irrigation water (EC 2.1 dSm-1 SAR 10.8 and Mg/Ca ratio 2.1) using flood and drip system with or without FYM and black plastic mulch (PM) on changes in properties of soil and performance of tomato crop during Rabi season of 1993-94. The effect of monsoon rain on changes in properties of soil was also studied. Ten treatment combinations viz., 50 mm flood (0.8 PE) and three levels of drip viz. D1(0.45), D2(0.60) and D3(0.75 PE) with or without FYM as well as black PM(50) at 0.45 PE with or without FYM were tried in randomised block design with four replications. The use of black polyethylene mulch alongwith drip irrigation at 0.45 PE showed maximum plant height, number of branches per plant and leaf area index. The use of drip irrigation was better with respect to above parameters over flood system. The levels of irrigation and application of FYM did not show significant response. The development of roots (dry weight, length and volume) was significantly higher under PM alongwith drip irrigation at 0.45 PE. Application of FYM was effective at higher level (0.75 PE) of drip irrigation only. The number of fruits per plant and mean weight of fruits were maximum under PM' treatments. The performance of drip system in respect of number of fruits per plant was better over flood. The fruit yields were significantly highest under PM treatment! during both the periods. The fruit yields under D1 + PM (75.29 Mg ha-1), D1 + PM + FYM, D3 + FYM and D3 treatments were 96.6, 67.8, 65.1 and 63.0 (period I), as well as 82.8, 62.5, 46.4 and 44.7 (overall) per cent higher, respectively over flood irrigation (41.19 Mg ha-1 ). The effect of application of FYM was not significant. The stalk yield was maximum under PM along with lower level of drip irrigation (0.45 PE) followed by treatment D3 (0.75 PE). The water use efficiency (kg ha-1 m-1 ) was maximum in D1 + PM (173.36) followed by D1 + PM + FYM (154.4) while increasing levels of drip irrigation reduced. the WUE irrespective of FYM application.
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Agricultural Chemistry and Soil Science, A Study