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A field study was conducted at experimental farm of Interfaculty Department of Irrigation Water Management, Post Graduate Institute, M.P.K.V., Rahuri, Maharashtra, India during Rabi season of 2014-15. The experiment was laid out in randomized block design with eight treatments and three replications. The treatments consisted of four levels of fertilizer application as 100%, 75%, 75% with foliar sprays and 50% recommended dose (RD) under drip fertigation (DF) and compared with conventional irrigation and conventional fertilizer application. The significantly higher yield (52.62 t ha-1) of tomato was obtained in DF with 100% RD and it was at par with DF with 75% RD + 3 foliar sprays, DF with 100% RD, N and K drip, P through soil and DF with 75% RD. The drip method had lowest water use (458.4 mm) as compared with 878.6 mm in surface irrigation method. The treatment consisting DF with 100% RD provided net seasonal income (Rs. 3,93,311 ha-1), net extra income over control (Rs.1,52,056 ha-1). The maximum B:C ratio (3.96) was observed in DI with 100% RD, N and K drip, P through soil followed by DF with 100% RD. The fertigation with 75% RD in 18 weekly splits as per schedule is the best treatment for improved growth, yield and water productivity of tomato (var. Abhinav) cultivated in silty clay loam soils of Western Maharashtra.

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A field study was conducted at Irrigation Water Management Farm, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra, India during kharif season of 2015-16. The experiment was laid out in a randomized block design with eight treatments and three replications. The treatments consisted of application of irrigation to soybean at different critical growth stages, viz., No irrigation (T1), one irrigation at branching, flowering and at pod filling stage, respectively (T2 to T4) and two irrigations at branching and flowering stage (T5), two irrigations at branching and pod filling stage (T6), two irrigations at flowering and pod filling stage (T7) and three irrigations at branching, flowering and pod filling (T8). Significantly higher grain and straw yield was obtained where three irrigations were given at branching, flowering and pod filling stage (30.43 q ha-1 and 55.92 q ha-1, respectively) followed by two irrigations at flowering and pod filling stage (28.89 q ha-1 and 54.12 q ha-1, respectively). The growth and yield contributing characters were improved with irrigations at critical growth stages of soybean. The highest nutrient availability of nitrogen, phosphorus and potassium in soil was 181.9 kg ha-1, 17.1 kg ha-1 and 434.5 kg ha-1, respectively was observed in no irrigation treatment at harvest. The highest nutrient uptake was observed in treatment of three irrigations at branching, flowering and pod filling stage was 200.26 kg ha-1, 41.54 kg ha-1 and 84.02 kg ha-1 N, P and K respectively.