Vol. 11 No. 2
Influence of plant growth regulators on growth and yield of garlic (Allium sativum L.)
Abstract: An investigation was carried out to study the influence of different concentration of growth regulators and chemicals on the growth and yield of garlic (local cultivar Katki). during rabi season of 2010-2011 and 2011-12. Four plant growth regulators viz. GA3, NAA and thiourea (50 ppm, 100 ppm and 200ppm) along with kinetin (10 ppm, 20 ppm and 40 ppm) 3 and two chemicals viz..KNO3 and NaH2PO4 @ 50 ppm, 100 ppm and 200 ppm were tested in the present investigation. 3 2 4 Maximum breadth of large clove (1.20cm), length of medium clove (1.90cm), weight of bulb(24g), yield per plot (1.68kg 2.1m-2) and projected yield (5.89t ha-1) were noticed under thiourea 100 ppm. Highest diameter of bulb (4.21cm) was associated under GA 200 ppm. Maximum length of large (2.53cm) and small clove (1.33 cm) were recorded under kinetin 3 40 ppm. Maximum cost benefit ratio (1:3.19) was noted under thiourea 100 ppm followed by NaH2 PO4100ppm (1: 3.00). 2 4 The most promising treatment under the alluvial tracts of West Bengal for garlic production is thiourea 100 ppm followed by NaH2PO4100 ppm, GA3 200 ppm and kinetin 40 ppm.
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