INFLUENCE OF ZINC AND BORON ON WHEAT PRODUCTIVITY AND POTASSIUM USE EFFICIENCY IN AN ACID ALFISOL
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Date
2012-12-01
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CSHHPKV Palampur
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 and150% of recommended
dose), two levels of Zn (0 and 10 kg ha-1
) and two levels of B (0 and 1 kg ha-1
) in
factorial randomized block design. Application of K @ 50, 100 and 150 per cent of
recommended dose increased plant height, dry matter accumulation, total and
effective tillers per metre row length, grains per ear and test weight significantly.
Similarly, application of Zn (10 kg ha-1
) and B(1 kg ha-1
) influenced these growth and
yield attributes of wheat significantly. Highest grain (42.52q ha-1
) and straw (66.80q
ha-1
) yield of wheat was recorded under 150 per cent of recommended dose of K.
Application of 150 percent 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 N, P, K, Mn, Fe, Cu and B
contents significantly at maximum tillering and harvesting. Application of Zn
increased Zn and B contents significantly at both the stages but the contents of Fe,
Mn and Cu decreased. However, B increased the contents of Zn and B only at
maximum tillering stage and Zn, Mn and B 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. B application increased partial factor
productivity and apparent recovery only. Application of K, Zn and B increased
available K, DTPA extractable Zn and available B content significantly, respectively.