Assessment of soil fertility for wheat using combined Fuzzy and AHP techniques in Udham Singh Nagar of Uttarakhand, India

Q4 Environmental Science

Ecology, Environment and Conservation Pub Date : 2023-01-01 DOI:10.53550/eec.2023.v29i02s.074

Sudheer Kumar, Prem Kumar Bharteey, Lata Vishnoi, S. Rai, Supriya Pandey, B. Deka, M. Dutta, Ajay Kumar, S. Borah, Ayush Bahuguna, Nidhi Luthra, Sudhir Pal

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Abstract

Assessing soil fertility is crucial for developing effective soil management strategies that can enhance soil health, increase crop productivity, and promote sustainable agricultural practices. The current study was conducted to assess the soil fertility index and, to prepare a soil fertility zonation map using combine fuzzy and analytical hierarchy process (AHP) approaches in Udham Singh Nagar of Uttarakhand. Sixty GPSbased surface soil samples were collected (0-30 cm depth) from different locations, and analyzed chemical properties using a stratified multistage random sampling method and maps were prepared to identify their spatial distribution. The results show that the values of soil fertility index on the fuzzy scale (0-1) was varied from 0.04-0.62 and, therefore, the study area was classified as very low, low, and moderate soil fertility classes comprising 55.61%, 44.24% and 0.14%, respectively. AHP analysis revealed that the most important limiting factor for wheat production was available nitrogen, followed by phosphorous, potassium, organic carbon, pH and electrical conductivity. A correlation coefficient between wheat yield and soil fertility index was found to be as high as 0.86, and its validating the zonation of soil fertility classes. This study infers that combined fuzzy-AHP techniques may be used to compute soil fertility index and limiting factors of wheat production.

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利用模糊和层次分析法联合评价印度北阿坎德邦乌德姆辛格纳加尔小麦土壤肥力

评估土壤肥力对于制定有效的土壤管理战略至关重要，这些战略可以增强土壤健康、提高作物生产力和促进可持续农业做法。本研究在北阿坎德邦的乌德姆辛格纳加尔进行了土壤肥力指数评估，并采用模糊和层次分析法相结合的方法编制了土壤肥力区带图。在不同地点采集60份表层土壤样本(深度0 ~ 30 cm)，采用分层多阶段随机抽样法分析土壤化学性质，绘制土壤空间分布图。结果表明:土壤肥力指数在0-1模糊尺度上的取值范围为0.04-0.62，划分为极低、低和中等土壤肥力等级，分别占55.61%、44.24%和0.14%。AHP分析表明，速效氮是影响小麦产量的最重要限制因子，其次是磷、钾、有机碳、pH和电导率。小麦产量与土壤肥力指数的相关系数高达0.86，证实了土壤肥力等级的划分。本研究推断，可采用模糊层次分析法结合计算土壤肥力指数和小麦生产限制因子。

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Ecology, Environment and Conservation Environmental Science-Nature and Landscape Conservation

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期刊介绍： Published Quarterly Since 1995. Ecology, Environment and Conservation is published in March, June, September and December every year. ECOLOGY, ENVIRONMENT AND CONSERVATION is one of the leading International environmental journal. It is widely subsribed in India and abroad by Institutions and Individuals in education and research as well as by Industries, Govt. Departments and Research Institutes.