Effect of organic source of nutrients and biofertilizers on growth, yield and quality of turmeric (Curcuma longa L.)
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Abstract
Turmeric (Curcuma longa L.) being a long crop duration, rhizomatous nature and high productivity it re-quires heavy input of fertilizers. Keeping this in view, an experiment was conducted at the Instructional farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal during 2009-10 and 2010-11 to study the effect of organic source of nutrients and biofertilizers on growth, yield and quality of Turmeric (Curcuma longa L.). The results revealed that application of green leaf manure (from Glyricidia maculata) @ 12tonnes/ha along with rock phosphate @ 0.2 tonnes/ha, wood ash @ 1 tonnes/ha, Azospirillum @ 5kg/ha + PSB @ 5kg/ha (T5) gave the sig-nificantly highest fresh (29.27 tonnes/ha) and dry yield (7.81 tonnes/ha) followed by vermicompost 5 tonnes/ha along with Azospirillum @ 5kg/ha + PSB @ 5kg/ha (T4) (26.30 tonnes/ha and 6.99 tonnes/ha, respectively) which was statistically at par with sole application of 30 tonnes/ha farm yard manure (T2) ( 26.00 tonnes/ha and 6.77 tonnes/ha, respectively). Next highest dry yield (6.40 tonnes/ha) was recorded in control plots (T6) of recommended dose of fertilizers at the rate of 80:80:120 kg N, P2O5 and K2O/ ha along farm yard manure @ 15 tonnes/ha. The lowest fresh yield of 19.31 tonnes/ha and dry yield (5.26 tonnes/ha) was recorded in the treatment of sole application of FYM @ 15 tonnes/ha (T1). Somewhat higher dry recovery percentage was recorded in case of all the organic treatments compared to control treatment (T6). Maximum dry recovery (27.22%) and curcumin content (5.24%) was recorded in the treatment of sole application of FYM @ 15 tonnes/ha (T1). It may be concluded that the application of green leaf manure (from Glyricidia maculata) @ 12tonnes/ha along with rock phosphate @ 0.2 tonnes/ha, wood ash @ 1 tonnes/ha, Azospirillum @ 5kg/ha and PSB @ 5kg/ha was the best treatment followed by application of Vermicompost @ 5 tonnes/ha + Azospirillium @5 kg/ha + PSB @ 5 kg/ha and application of farm yard manure @ 30 tonnes/ha treatments for dry yield and quality of turmeric.
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Biofertilizer, Growth, Organic, Quality, Turmeric, Yield
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