Assessment of soil micronutrients from a mango based agroecology of Malihabad, Uttar Pradesh, India

T. Adak, Kailash Kumar, vinod k. singh
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Abstract

A sum of 250 soil samples were collected from mango based agroecology of Malihabad region, Lucknow, Uttar Pradesh to assess the status of soil micronutrients integrated with the nutrient, water, space and canopy management for improving productivity of subtropical fruits. Notable differences were observed in case of Zn, Cu, Mn and Fe content within and across mango orchards. Histogram distribution showed Zn and Cu content in the maximum frequency range of 0.5 to 1.0 and 1.5 to 3.0 mg kg respectively while Mn was evenly distributed in 3.0 to 6.0 mg kg range. In contrast, Fe distribution was scattered. A range of 0.45–1.23, 1.47–2.91, 2.86–11.13 and 4.9–15.2 mg kg Zn, Cu, Mn and Fe respectively across different mango sites were estimated. In the case of major nutrients (NPK), the frequency distribution of P and K indicated widely spread while N was confined to a smaller distribution range. Soil reaction (pH) was mostly found near neutral to slightly alkaline in nature. The ecological significance of this study indicated the need for proper nutrient management. Such information may be useful for conserving the mango based agroecology for future endeavor through the adoption of optimized micronutrient management technologies.
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印度北方邦马利哈巴德以芒果为基础的农业生态土壤微量营养素评估
在印度北方邦勒克瑙马利哈巴德地区采集了250个以芒果为基础的土壤样品,评估了土壤微量元素与养分、水分、空间和冠层管理相结合的状况,以提高亚热带水果的生产力。不同芒果果园间和果园内锌、铜、锰、铁含量差异显著。直方图显示Zn和Cu含量分别在0.5 ~ 1.0和1.5 ~ 3.0 mg kg的最大频率范围内,Mn含量在3.0 ~ 6.0 mg kg的最大频率范围内均匀分布。而铁的分布较为分散。锌、铜、锰和铁在芒果不同部位的含量分别为0.45 ~ 1.23、1.47 ~ 2.91、2.86 ~ 11.13和4.9 ~ 15.2 mg kg。在主要养分(NPK)中,P和K的频率分布较广,而N的分布范围较小。土壤反应(pH)在性质上大多接近中性至微碱性。本研究的生态学意义表明,需要适当的营养管理。这些信息可能有助于通过采用优化的微量元素管理技术来保护芒果的农业生态。
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