EFFECT OF LONG TERM FERTILIZER MANAGEMENT PRACTICES ON YIELD AND QUALITY OF MANGO by
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Date
2016-05
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DBSKKV., Dapoli
Abstract
DEPARTMENT OF SOIL SCIENCE AND AGRIL. CHEMISTRY
COLLEGE OF AGRICULTURE, DAPOLI
DIST.RATNAGIRI, MAHARASHTRA
Title of Thesis
:
Effect of long term fertilizer management practices on yield and quality of mango
Name of the student
:
Ms. HarshalaNandkumarThakare
Year
:
2014-2016
Regd. No.
:
ADPM/14/2363
Name and Designation of Research Guide
:
Dr. S.S. Prabhudesai
Head,
Department of Soil Science and Agril. Chemistry,
Dr. B.S. KonkanKrishiVidyapeeth, Dapoli
ABSTRACT
Mango (MangiferaindicaL.) is most important commercial crop of India. The country ranks first among world‟s mango producing countries accounting for about 50% of the production. The continuous and judicious supply of nutrients is essential to sustain the mango fruit production with high yield. Long term fertilizer management is useful for maintenance of soil fertilizer that provide essential nutrients throughout the life span of mango.
In order to study „Effect of long term fertilizer management practices on yield and quality of mango‟, eight mango orchards were selected. Out of these Murud-1, Murud-2, Gimhavane, Ladghar-1, Dapoli-1, Devgad were treated mango orchards while, Murud-3, Ladghar-2 and Dapoli-2 were untreated mango orchards. In all, eight trees from each orchard were brought under study. From each mango orchard, the surface soil samples and leaf samples were collected at flowering and harvest stages and from each tree four fruits were randomly collected at egg and harvest stage by following standard methods of collection.The physico-chemical properties of soil (pH, EC and OC) major nutrients (available N, P2O5, K2O, Ca, Mg,
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S) and micronutrients(DTPA extractable Fe, Mn, Zn and Cu) were determined. The leaf and egg sized fruit samples were analyzed for the major nutrients (N, P, K, Ca, Mg and S) and micro nutrients (Fe, Mn, Zn and Cu).thequality parameters viz. T.S.S., acidity, reducing sugar and total sugar content were determined from ripe fruit.
The results revealed that thenutrient content in soil, leaf and egg sized fruit of untreated mango orchards were low as compared to treated mango orchards.The primary nutrients content i.e. available N (506.63 kg ha-1), available P2O5 (21.64 kg ha-1) and available K2O (451.26 kg ha-1) in soil of treated mango orchards were higher than available N (259.46 kg ha-1), available P2O5 (13.52 kg ha-1) and available K2O (203.46 kg ha-1) content in soil of untreated mango orchards.The correlation studies between soil and leaf nutrients showed positive and significant correlation at flowering and harvesting stages in treated mango orchards. The overall nutrient contents in soil and leaf decreased from flowering to harvest stage in treated mango orchardsas well as untreated. Average yield of treated mango orchards (68.20 kg/ tree) was higher than untreated mango orchards (7.33 kg/ tree).The available nutrients in treated mango orchards were significantly correlated with yield. In case of treated mango orchards, the organic carbon of soil was significantly correlated with total soluble solids, exchangeable Cawith total sugar and available K2Owith reducing sugar while total magnesium with titratable acidity and total soluble solids and total calcium with reducing sugar. Untreated mango orchards did not show any significant correlation.
Hence the study indicated that the judicious and sustained use of balanced fertilizer is essential for higher mango production with good fruit quality.
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