EFFECT OF GRADED DOSES OF INORGANIC AND ORGANIC SOURCE OF NUTRIENTS ON SOIL FERTILITY, NUTRIENT UPTAKE, GROWTH, YIELD AND QUALITY OF TIKHUR (Curcuma angustifolia Roxb) IN MIDLAND INCEPTISOLS OF BASTAR PLATEAU ZONE OF CHHATTISGARH
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Date
2017
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Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.)
Abstract
A field experiment on “Effect of graded doses of inorganic and organic source of nutrients on soil fertility, nutrient uptake, growth, yield and quality of Tikhur (Curcuma angustifolia Roxb) in midland Inceptisols of Bastar plateau zone of Chhattisgarh” was carried out at the Research Farm, Shaheed Gundadhoor College of Agriculture and Research station, Jagdalpur (C.G.) during Kharif season 2016. The experiment was laid out in a factorial randomized complete block design, with the treatments comprised of four levels of fertilizers (N0P0K0, N30P20K30, N60P40K60 and N90P60K90 kg ha-1) and four levels of vermicompost (0, 10, 20 and 30 t ha-1) and three replications. Inorganic and organic nutrient levels had significant effect on crop growth, yield, economics, nutrient removal and quality parameters of tikhur as well as on soil physicochemical properties. Interaction effect was also found significant in case of total rhizome yield, starch yield, gross and net return, nitrogen uptake by tuber and total nitrogen uptake by tikhur.
The highest values of all the growth (except leaf breadth), yield and quality parameters, gross return, soil physicochemical properties (except soil pH) and NPK content and uptake by tikhur was recorded under vermicompost @ 30 t ha-1 which was found significantly higher than 0 and 10 t ha-1 but at par with vermicompost @ 20 t ha-1 except leaf length, phosphorus and potassium uptake by haulm which was significantly higher under vermicompost @ 30 t ha-1. Contrarily, significantly higher gross and net benefit: cost ratio was recorded where no vermicompost was applied as compared to 20 and 30 t ha-1 but at par to vermicompost @ 10 t ha-1.
The highest values of all the above parameters was also recoded under fertilizer dose @ N90P60K90 kg ha-1 as compared to fertilizer @ N0P0K0 and N30P20K30 kg ha-1 and at par with N60P40K60 kg ha-1 except potassium uptake by tuber and total potassium uptake and cation exchange capacity which was significantly higher under N90P60K90 kg ha-1 and electrical conductivity of soil which was found highest under N0P0K0. Soil pH, organic carbon, soil porosity, available calcium, available magnesium, available sulphur, potassium content in tuber and haulm was not influenced with fertilizer levels. Gross and net B:C ratio was found significantly higher under fertilizer @ N60P40K60 kg ha-1 than N0P0K0 and N30P20K30 but at par with N90P60K90.
In case of interaction, the total rhizome yield, starch yield, gross return, nitrogen uptake by tuber and total nitrogen uptake by tikhur was found superior under the combination of fertilizer @ N60P40K60 X vermicompost @ 20 t ha-1. The higher net return 397831.33 Rs. ha-1 was achieved due to N60P40K60 X vermicompost @ 20 t ha-1 which was statistically at par with N90P60K90 X 20 t ha-1 vermicompost. The higher gross B:C ratio 3.37 Rs. Re-1 was achieved due to N60P40K60 kg ha-1 X 0 t ha-1 vermicompost which was statistically at par with N90P60K90 X 0 t ha-1 vermicompost.
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