STUDIES ON THE EFFECT OF ORGANIC MANURES, FERTILIZERS AND TIME OF HARVESTING ON GROWTH AND YIELD OF LEMON GRASS (Cymbopogon citratus (DC.) Stapf
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Date
2023-01
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UHF,NAUNI
Abstract
ABSTRACT
The present research entitled “Studies on the effect of organic manures, fertilizers and
harvesting schedules on growth and yield of lemongrass (Cymbopogon citratus (DC.) Stapf)”
were carried out in the experimental field as well as in laboratory of Department of Forest Products,
COF, UHF, Nauni, Solan (HP) during 2021-22. Morphological studies revealed that Cymbopogon
citratus was found to be a tall, perennial aromatic grass which grows upto a height of 19.69 cm to
131.93cm. The stem was erect, smooth, cylindrical in shape, swollen node and dark purple ring at
vegetative stage, turning into green yellowish on flowering stage. The roots were adventitious, pale
yellow in color. Leaves were slender, blade like, long, linear, tapering at both ends and glaucous
moderate green in color. The inflorescence was large and the florets were arranged alternatively on
the central axis. A spikelet consists of two bracts at the base called glumes. The glumes were placed
one above the other on the opposite sides. The lower one is known as the first glume, while the higher
one is known as the second glume. The flower is bisexual and floret was made up of two bracts, one
on the outside called the lemma and the other on the inside called the palea. With regard to effect of
organic manures, fertilizers and harvesting schedules on growth and yield , the results revealed that
the combined application of Jeevamrit + NPK (60:45:45 kg/ha) gave the maximum value for plant
height (87.00 cm), no. of leaves per plant (136.89), plant spread (70.87 cm2), fresh herbage weight per
plant (262.32 g), dry herbage weight per plant (146.47 g), estimated fresh herbage yield (103.79 q/ha),
estimated dry herbage yield (54.93 q/ha), essential oil content (0.50%), oil yield (52.45 l/ha). When
plants were harvested after 90 days. Highest benefit cost ratio (1.57) was recorded with the
application of treatment (jeevamrit + NPK) and minimum B:C ratio was recorded in T1 (0.10) i.e
control.