EFFECT OF ORGANIC AND INORGANIC SOURCES OF NITROGEN ON GROWTH, YIELD AND QUALITY AND PRE-HARVEST SPRAYS OF GROWTH REGULATORS AND CHEMICALS ON STORAGE LIFE OF GARLIC (Allium sativum L.)
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Date
2012-08
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UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT
Abstract
Field experiments were conducted during rabi, 2010-2011 at Kittur Rani Channamma College of Horticulture, Arabhavi farm to study the effect of organic and inorganic sources of nitrogen on growth, yield and quality and pre-harvest sprays of growth regulators and chemicals on storage life of garlic. The field trials were laid out in a Randomized Block Design with nine treatments and three replications.
Significant differences were observed among different treatments with reference to plant height, number of leaves per plant, leaf length and breadth and collar diameter due to organic and inorganic sources of nitrogen. Significant differences were also observed with reference to yield parameter like weight of bulbs, bulb diameter, weight of cloves and bulb yield due to nitrogen sources. Significantly highest bulb yield (5.36 t/ha) was recorded in T8 (100 % RDN through vermicompost) and least bulb yield (4.17 t/ha) was recorded in T3 (75% RDN through FYM + 25% RDN through urea). Highest B: C ratio (2.71) was recorded in T9 (100% RDF) and least (1.64) was recorded in T7 (75% RDN through VC + 25% RDN through urea).
Pre-harvest Sprays of growth regulators and chemicals significantly influenced the plant height, number of leaves per plant, leaf length and breadth and plant diameter. However, the bulb yield was not affected by pre-harvest sprays of growth regulators and chemicals. Pre-harvest Sprays of growth regulators and chemicals significantly reduced the physiological loss in weight upto 180 days of storage. Significantly least cumulative physiological loss in weight (30.67%) was recorded in T2 (Maleic hydrazide 2500 ppm + Carbendazim 1000 ppm) and highest cumulative physiological loss in weight (39.57%) was recorded in T9 -control (unsprayed) as 180 days of storage. All the growth regulators
and chemicals significantly enhance the recovery of healthy cloves compared to control.
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