Effect Of K, Zn And B Levels on Their Concentration, Uptake, Yield, Potassium Use Efficiency and Partial Factor Productivity in Wheat in an Acid Alfisol
Keywords:
Potassium, Zinc, Boron, Wheat Yield, Uptake, Potassium Use Efficiency, Alfisol.Abstract
The present investigation was carried out at experimental farm of Department of Soil Science, College of Agriculture, CSK HPKV, Palampur with sixteen treatments consisting of four levels of K (0, 50,100 and 150% of recommended dose), two levels of Zn (0 and 10 kg ha-1) and two levels of B (0 and 1 kg ha-1) . Highest grain (42.52q ha-1) and straw (66.80 q ha-1) yield of wheat was recorded under 150 per cent of recommended dose of wheat. Application of 150 per cent of recommended dose of K increased grain and straw yield by 43.7 and 46.9 per cent over no K, respectively. Application of Zn (10 kg ha-1) increased grain and straw yield by 10.9 and 9.8 per cent over no Zn, respectively. The increase in grain and straw yield with the application of B (1 kg ha-1) was 5.6 and 6.3 per cent, respectively. Application of K increased K, Zn and B contents significantly at maximum tillering and harvesting. Application of Zn increased Zn and B contents significantly at both the stages. However, B increased the contents of Zn and B only at maximum tillering stage and at harvesting (grain and straw). Almost similar effects of K, Zn and B application on total nutrient uptake were observed. Application of Zn increased partial factor productivity, physiological efficiency, agronomic efficiency and apparent recovery. Boron application increased partial factor productivity and apparent recovery only.Downloads
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