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Soil Fertility Assessment and Mapping of Agricultural Research Station, Jaubari, Illam, Nepal
Author(s) -
Dinesh Khadka,
Sushil Lamichhane,
Keshav Prasad Shrestha,
Sushila Joshi,
Manoj Karna,
Buddhi B. Pant,
Surendra S. Yadav
Publication year - 2017
Publication title -
international journal of environment
Language(s) - English
Resource type - Journals
ISSN - 2091-2854
DOI - 10.3126/ije.v6i3.18097
Subject(s) - loam , soil texture , soil fertility , soil test , silt , agronomy , environmental science , soil science , chemistry , soil water , biology , paleontology

Soil fertility evaluation is a prerequisite factor for sustainable planning of a particular region. Considering this, a study was conducted to determine the soil fertility status of the Agricultural Research Station, Jaubari, Illam, Nepal. In total, 78 soil samples were collected using soil sampling auger randomly from a depth of 0-20 cm. The texture, pH, OM, N, P2O5, K2O, Ca, Mg, S, B, Fe, Zn, Cu and Mn status of the samples were analyzed in the laboratory of Soil Science Division, Khumaltar by following standard analytical methods. The soil fertility maps of the observed parameters were prepared through Arc-GIS 10.1 software. The observed data revealed that soil was brown (10YR 4/3), dark grayish brown (10YR 4/2), dark yellowish brown (10YR 4/4) and yellowish brown (10YR 5/6) in colour, and the structure was granular. Similarly, the sand, silt and clay content were 53.84±1.06%, 34.34±0.83% and 11.82±0.47%, respectively and were indicated as sandy loam and loam in texture. The soil was very acidic (pH 3.85±0.04), and very low in available boron (0.26±0.06mg/kg) and available sulphur (0.59±0.15mg/kg). The available calcium (188.7±31.30mg/kg), available magnesium (50.98±5.0mg/kg) and available manganese (5.16±0.90mg/kg) were low. Likewise, available potassium (110.91±7.30mg/kg), available zinc (1.19±0.31mg/kg) and available copper (0.95±0.05mg/kg) content were medium. Similarly, organic matter (7.88±0.32%), total nitrogen (0.27±0.01%) and available phosphorus (36.53±5.66mg/kg) were high, and available iron (39.5±2.17 mg/kg) was very high.  

International Journal of Environment

Volume-6, Issue-3, Jun-Aug 2017, page: 46-70

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