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Environment
& Ecology 21 (3) : 680 - 683, 2003
© Copyright by MKK publication 2003 ISSN 0970 - 0420
Effect
of Humic Acid (Earth) on the growth and Yield of
Transplanted Summer Rice
S. P. BHATTACHARYA,
SITANGSHU SARKAR, A. J. KARMAKAR
P. S. BERA AND LATIKA MONDOL
Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya
Mohanpur 741252, India.
Abstract
An experiment was conducted in a medium fertile soil during
the rabi season of 2001-02 to study the effect of humic
acid (commercial formulation, earth which contains 12% humic
acid) on the growth and yield of transplanted rice (cv IET
4786 or Satabdi). The highest dry matter accumulation to
the tune of 329.8 and 651.1 g/m2 at 45 and 90 DAT respectively
were recorded in the humic acid or earth 1.0 liter / hectare
treatment which was at per with the dry matter accumulation
(327.1 and 648.4 g/m2 at 45 and 90 DAT) obtained with FYM
7t/hectare. The highest number of effective tillers (288/m2)
and the highest numbers of filled grains (70.2/panicle)
were recorded with the treatment earth at 1.0 liter/hectare.
The highest grain yield (3.72t/hectare) was recorded with
earth 1.0 liter/hectare which was at per with the grain
yield recorded with FYM at 7t/hectare and earth 1.5 liter/hectare
each producing 3.66t/hectare of grain yield. It is therefore
quite obvious that before transplanting, soil application
of humic acid or earth at 1.0liter/hectare in summer rice
can produce grain yield of rice equivalent to the obtained
from 7/hectare of farm yard manure.
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