eprintid: 8933
rev_number: 9
eprint_status: archive
userid: 1305
dir: disk0/00/00/89/33
datestamp: 2015-08-14 05:26:08
lastmod: 2015-08-14 05:27:58
status_changed: 2015-08-14 05:26:08
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Prabhavati, K
creators_name: Dasog, D S
creators_name: Patil, P L
creators_name: Sahrawat, K L
creators_name: Wani, S P
icrisatcreators_name: Sahrawat, K L
icrisatcreators_name: Wani, S P
affiliation: Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences (Dharwad)
affiliation: ICRISAT (Patancheru)
affiliation: icrt
country: India
title: Soil Fertility Mapping using GIS in Three Agro-climatic Zones of Belgaum District, Karnataka
ispublished: pub
subjects: s2.14
divisions: D7
crps: crp1.1
full_text_status: restricted
keywords: Soil fertility map, GIS, agro-climatic zones, land use, watersheds
abstract: Soil fertility parameters viz., pH, electrical conductivity (EC), available macro- and micronutrients were determined in soil samples drawn at 300 m grid intervals from three micro-watersheds representing northern dry zone (zone-3), northern transition zone (zone-8) and hilly zone (zone-9) across a climatic gradient in Belgaum district of Karnataka. Based on the data maps were prepared in GIS environment using Arc GIS v 10.0. The soil fertility parameters clearly reflect the agro-climatic conditions under which the soils are formed. Soils of zone-3 were alkaline (pH> 8.5), soils of zone-8 slightly alkaline (7.0-8.5) and those of zone-9 slightly acidic (5.5-6.5). Whereas carbon and available nitrogen (N) in soils of both zone-3 and zone-8 were low, organic carbon (OC) was high (6.9 g kg-1) but the available N was medium (412 kg ha-1) in soils of zone-9. Available phosphorus (P) remained low in zones-3 and zone-8 but was marginally medium in zone-9. The available potassium (K) status of zone-3 soils was high (401 kg ha-1) but was medium in zone-8 and zone-9. Available sulphur (S) was low, DTPA extractable Zn and Fe was deficient, and Mn and Cu was sufficient in soils of both zone-3 and zone-8. In zone-9, however, available S and Zn were marginally sufficient but Fe, Mn and Cu were distinctly sufficient. In conformity with mean values described above, OC, available N, P, S and Zn were low (100% area for each) and available K was high in 91.2% area in soils of zone-3. Similarly for zone-8, OC and available N was low in 2/3 of area, available P was low in 76.5% area, available K was medium in 92.0% area, and low in available S (10%), deficient in Zn (99.1% area) and Fe (100% area). In agreement with means a large area under high OC (66.2%) and medium in available N (81.2%) and low in P (71.7%) was reflected in maps of zone-9. However, available K, S and Zn were distributed equally between low and medium classes despite K being medium and S being low and Zn being sufficient suggesting maps are preferred over means. The pH was slightly lower, OC and available N distinctly higher, and available P and DTPA extractable Cu lower in forest lands compared to agricultural lands in zone-9. Land use did not influence available K and DTPA extractable Zn, Fe and Mn.
date: 2015
publication: Journal of the Indian Society of Soil Science
volume: 63
number: 2
publisher: Indian Society of Soil Science - ICAR
pagerange: 173-180
refereed: TRUE
issn: 0019-0028
official_url: http://epubs.icar.org.in/ejournal/index.php/JISSS/article/view/50627
related_url_url: https://scholar.google.co.in/scholar?hl=en&q=Soil+Fertility+Mapping+using+GIS+in+Three+Agro-climatic+Zones+of+Belgaum+District%2C+Karnataka&btnG=
related_url_type: pub
citation:   Prabhavati, K and Dasog, D S and Patil, P L and Sahrawat, K L and Wani, S P  (2015) Soil Fertility Mapping using GIS in Three Agro-climatic Zones of Belgaum District, Karnataka.  Journal of the Indian Society of Soil Science, 63 (2).  pp. 173-180.  ISSN 0019-0028     
document_url: http://oar.icrisat.org/8933/1/Prabhavati%20et%20al.%202015%20JISS.pdf