USE OF GEOSPATIAL TOOLS TO IDENTIFY SOIL RELATED CONSTRAINTS IN MANGO GROWING SOILS OF THE YSR KADAPA DISTRICT OF ANDHRA PRADESH
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Authors
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M.BALAKRISHNA*, T. GIRIDHARA KRISHNA, K.V. NAGAMADHURI, P.SUDHAKAR, B. RAVINDRA REDDY and K.M.YUVARAJ
Department of Soil Science and Agricultural Chemistry, S.V. Agriculture College, Acharya N.G. Ranga Agricultural University, Tirupati-517 502
Keywords:
Geospatial Tools, GIS, GPS, Mango, Soil fertility maps, YSR Kadapa DistrictAbstract
Using a GPS-based survey, the detailed soil fertility status of mango-growing soils in twelve
mandals of the YSR Kadapa district (Andhra Pradesh) was explored in 2019-20 to discover soilrelated
crop production restrictions. pH, EC, OC, and accessible N, P, and K were measured in georeferenced
composite surface(0-30cm) soil samples. In terms of response, almost all soils were neutral
to mildly alkaline. The electrical conductivity (EC) of the soil was within acceptable limits for crops
(0.48 dSm-1). The average content of soil organic carbon was 4.2 g kg-1, with a range of 1.3 to 7.2 g
kg-1. The accessible soil nitrogen, phosphorus, and potassium were found to be 229.65, 21.28, and
264.11 kg ha-1, respectively. Using the ArcGIS programme, thematic soil fertility maps were created
for each soil parameter to provide ready-to-understand information about soil fertility status and act
as a decision-making tool for effective mango production.
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