Vol. 17 No. 1
Performance of wheat under different tillage methods and potassium levels under irrigated and rainfed conditions of Northern-India
Abstract: The impact of two tillage methods [conventional and conservation tillage], two irrigation levels [no irrigation and two irrigations of 2.5 cm each at tillering and flowering stages only] and three potassium levels [100 per cent, 125 per cent, and 150 per cent recommended dose of potassium] were evaluated for soil moisture content, yield, nutrient uptake by wheat crop and soil properties at the experimental farm of Department of Soil Science, CSK HPKV, Palampur, during rabi, 2016-17. The results indicated that plots under conservation tillage exhibited early emergence, higher soil moisture content, plant height (77.2 cm), relative leaf water content, better yield attributes (spike length, number of grains per spike, number of effective tillers and 1000-grain weight) and grain (26.6 q ha-1) and straw yield (39.5q ha-1) in comparison to the conventional tillage. Among the irrigation levels, higher plant height (76.0 cm), relative water content, better yield attributes and grain (28.4 q ha-1), and straw yield (41.1q ha-1) were recorded when the crop was irrigated twice as compared to no irrigation. The treatment comprising two irrigations coupled with the application of 150 per cent recommended dose of potassium under conservation tillage recorded higher gross returns (Rs. 97106 ha-1), net return (Rs. 62860 ha-1) and B: C ratio (2.84).
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