Assessment of nutrient status in Rajagondanahallli Micro-watershed of Channagiri taluk, Davanagere district, Karnataka by using geographic information system technique
{"title":"Assessment of nutrient status in Rajagondanahallli Micro-watershed of Channagiri taluk, Davanagere district, Karnataka by using geographic information system technique","authors":"Naik. D Balaji, K. Gurumurthy","doi":"10.37745/ijepr.13/vol10n32938","DOIUrl":null,"url":null,"abstract":"The study was conducted to assess the soil fertility status and to prepare the fertility mapping at Rajagondanahallli micro-watershed (480.55 ha) of Davangere district by using GIS and GPS techniques during the year of 2019 to 2021. Total 44 surface soil samples at 320 × 320 m grid intervals (0 to 15 cm depths) were collected and soil fertility mapping were developed by using Arc GIS software. The fertility status of soils of Rajagondanahallli micro-watershed indicated that the soil were low (81.15 %) to medium (9.58 %) in available nitrogen, low (4.77 %) to medium (85.95 %) in available phosphorus, medium (52.10 %) to high (38.63 %) in available potassium, available sulphur were found to be sufficient, whereas exchangeable calcium and magnesium were found to be sufficient. DTPA extractable zinc was sufficient in 434 ha (90.24 %) and deficient in 2 ha (0.49 %) area. Whereas DTPA extractable iron, manganese, copper were sufficient. Available boron was low (20.19 %) to medium (70.53 %) in the study area.","PeriodicalId":322162,"journal":{"name":"International Journal of Environment and Pollution Research","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environment and Pollution Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.37745/ijepr.13/vol10n32938","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The study was conducted to assess the soil fertility status and to prepare the fertility mapping at Rajagondanahallli micro-watershed (480.55 ha) of Davangere district by using GIS and GPS techniques during the year of 2019 to 2021. Total 44 surface soil samples at 320 × 320 m grid intervals (0 to 15 cm depths) were collected and soil fertility mapping were developed by using Arc GIS software. The fertility status of soils of Rajagondanahallli micro-watershed indicated that the soil were low (81.15 %) to medium (9.58 %) in available nitrogen, low (4.77 %) to medium (85.95 %) in available phosphorus, medium (52.10 %) to high (38.63 %) in available potassium, available sulphur were found to be sufficient, whereas exchangeable calcium and magnesium were found to be sufficient. DTPA extractable zinc was sufficient in 434 ha (90.24 %) and deficient in 2 ha (0.49 %) area. Whereas DTPA extractable iron, manganese, copper were sufficient. Available boron was low (20.19 %) to medium (70.53 %) in the study area.