Response of irrigation on water requirement of european dill (Anethum graveolens Linn.) under varting water table conditions
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Date
2006-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
A lysimeter experiment with European dill crop at Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar during Rabi season of 2004-05 with six irrigation schedule viz., I0 (rain-fed), I1 (irrigation at 21 DAS), I2 (irrigation at 21 and 42 DAS), I3 (irrigation at 40 per cent depletion of ASM), I4 (irrigation at 60 per cent depletion of ASM) and I5 (irrigation at 80 per cent depletion of ASM), three water table viz., W1(30 cm), W2(60 cm) and W3(90 cm) was conducted.
Analysis of results showed that of six irrigation schedules, three water tables the optimum water requirement (785.67 mm) was at irrigation at 40% depletion of ASM and 60 cm water table for better growth and development and higher yield and yield attributes. Maximum height of the crop (154.65), number of leaves per plant (719.20), leaf area (0.965 cm2) was observed for irrigation schedule at 40% depletion of ASM and 60 cm water table at 150 DAS. Maximum number of umbels per plant (15.97), umbellates per umbel (39.17) and branches per plant (2.75) was observed at 60 cm deep water table.
The results also showed that minimum days required for 50 % flowering is 97 days and for 75% flowering was as 107.50. Grain yield was observed to be optimum at 60 cm water table (28.56 q/ha) with irrigation at 40% depletion of ASM. The optimum dry matter yield (32.34 q/ha) was observed at 60 cm water table.
The crop coefficient for European dill was maximum (1.87) for 30 cm water table, followed by 60 cm water table (1.80) and minimum for 90 cm water table (1.65). The interaction effect studied between irrigation schedules and water table served to be significant for yield and water use efficiency being maximum (3.635) for 60 cm water table with irrigation at 40 % depletion of ASM.