NUTRIENT CONTENT OF LEAVES AND SOIL PROPERTIES AS AFFECTED BY VARIOUS SOURCES OF NUTRIENTS UNDER HIGH DENSITY MANGO ORCHARD (MANGIFERA INDICA L.) CV. AMRAPALIRajnee Sharma, P.K. Jain and T.R. Sharma
A field investigation was conducted to study the effect of organic and inorganic sources of nutrients on physico-chemical properties of soil under high density mango orchard (Mangifera indica L.) cv. Amrapali at Horticulture Complex, Maharajpur, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.) during 2012-13 and 2013-14. A total of twenty four treatment combinations of inorganic and organic sources on nutrient were tested in factorial randomized block design with three replications. The results of study revealed that higher level of nutrient either in the form of chemical fertilizer or organic sources enhanced the concentration of macro and micro nutrient in leaves. Application 520: 160: 450 NPK g plant-1 and Vermicompost (25 kg) + Oil cake (2.5 kg) + Azotobacter + VAM + TV + PSB (100g each) registered higher concentration of N (2.59 and 2.78%), K (62.90 and 77.82 mg kg-1), Zn (27.33 and 30.03 mg kg-1), Cu (9.53 and 10.51 mg kg-1), Fe (196.93 and 213.10 mg kg-1) and Mn (88.57 and 98.03 mg kg-1) was in leaves of shoot bearing malformed panicle than healthy once. Whereas, higher concentration of P (0.37 and 0.34%) was in leaves of shoots bearing healthy panicle. Similarly, higher dry accumulation was with malformed panicles over healthy one. The minimum severity and intensity (1.8 m2 and 9.42%) of malformed panicle was noted when plant nourished with 100% RDF of chemical fertilizer (415: 130: 360 NPK g plant-1) or (2.2m2 and 12.15%) organic sources of nutrient (Vermicompost (25 kg) + Oil cake (2.5 kg) + Azotobacter + VAM + TV + PSB (100g each) or its combination registered (1.2 m2 and 5.56%). The inorganic and organic sources of nutrient increased the organic carbon, available nitrogen, phosphorous and potassium in post harvest form the base value. Further, it was noted that these sources significantly decreased the bulk density. The soil pH and electric conductivity of soil did not differed significantly when plant received nutrient either in the form of chemical fertilizer or organic sources. The interaction of different sources of nutrient in post harvest soil of high density orchard did not showed any significant effect on physic-chemical property of soil.
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