EFFECT OF DIFFERENT LEVELS OF NPK FERTILIZATION ON GROWTH, YIELD AND QUALITY OF MALT BARLEY (Hordeum vulgare L.)
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Date
2004-01-12
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UNIVERSITY OF AGRICULTURAL SCIENCES BANGALORE
Abstract
A field experiment was conducted to study the "effect of different levels
of NPK fertilization on growth, yield and quality of malt barley [Hordeum
vulgare L.)", at Research and Development Farm, Ugar Sugar Works Limited,
Ugar Khurd, Belgaum district during rabi, 2001-02. The experiment was
laid out in randomised block design (three factor) with three replications.
The highest total diy matter production (107.14 g/0.5 m row length),
DM accumulation in leaves (26.92 g/0.5 m row length) and ear head (38.01
g/0.5 m row length) was observed due to application of 100 kg N ha-' at 90
DAS. Application of N @ 100 kg ha-' also accounted for maximum LAI at 90
DAS (2.65).
Grain and straw yield were highest (46.53 and 67.45 q ha-i) with the
application of 100 kg N ha ' and was at par with that of 80 kg N ha ' (43.44
and 66.62 q ha-'). Application of 100 kg N ha-' recorded maximum protein
per cent in grains (10.81%), a-amylase activity (59.62 mg/g of maltose),
husk percentage (9.53%) and germinative energy at 48 and 72 hours (95.51
and 99.33) and highest uptake of NPK (79.96, 23.12 and 202.42 NPK kg
ha-i). Highest net returns (Rs.26,167 ha ') were recorded with application of
100 kg N ha-i and was at par with that of 80 kg N ha-'.
Application of 60 kg P2O5 ha ' recorded significantly higher total diy
matter production (97.59 g/0.5 m row length) and LAI (2.41) over 30 kg P2O5
ha-i. Grain and straw yield was significantly higher (40.34 and 63.43 q ha-')
with the application of 60 kg P2O5 ha ' over 30 kg P2O5 ha-'.
Protein content in grains, a-amylase activity, husk percentage and
germinative energy at 48 and 72 hours were significantly higher with the
application of 60 kg P2O5 ha-' over 30 kg P2O5 ha-'. Highest net returns
(Rs.21,611 ha-') were recorded with application of 60 kg P2O5 ha-'.
Application of potassium did not show significant effect on the overall
performance of the crop. The interaction effects were found to be non
significant for all the variables. To obtain higher yield, as well as malt
quality, fertilizer dose of 80:30:20 NPK kg ha-' can be recommended, which
is economically viable.
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