In order to enhance the productivity of rabi (Oct-May) castor through appropriate water management technology, three field experiments were conducted at Soil and Water Management Farm, NAU., Navsari (Gujarat) with the objectives to find out schedule of irrigation through drip as well as surface methods of irrigation along with fertigation and mulching. The results of first experiment on drip irrigation and fertigation revealed that irrigating the crop at 0.4 PEF resulted in 38 per cent saving of water as compared to surface method of irrigation. Similarly, fertilizing with drip could save about 40 to 60 per cent fertilizer. The results of another study indicated that irrigating rabi castor at 0.6 IW/CPE ratio and mulching with sugarcane trash gave significantly higher seed yield of (3 t/ha) as compared to control. Similarly, mulching with sugarcane trash @ 5 t/ha could enhance the seed yield by 15 per cent and that with black plastic mulch 25 per cent. Another study involving drip method of irrigation under constraint of irrigation water showed that castor sown in paired row (60 x 60 x 120 cm) along with adoption of drip method of irrigation could save 39 per cent water and 40 per cent fertilizer. From the results of different studies, it is concluded that rabi castor seems to be more remunerative than existing crops in general and than summer paddy in particular.