首页|Intensified cropping reduces soil erosion and improves rainfall partitioning and soil properties in the marginal land of the Indian Himalayas

Intensified cropping reduces soil erosion and improves rainfall partitioning and soil properties in the marginal land of the Indian Himalayas

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Environmental crises,land degradation,declining factor productivity,and farm profitability questioned the sustainability of linear economy-based existing agricultural production model.Hence,there is a dire need to design and develop circular economy-based production systems to meet the twin objectives of environmental sustainability and food security.Therefore,the productive capacity,natural resource conserving ability,and biomass recycling potential of four intensified maize-based systems viz.maize(Zea mays)+sweet potato(Ipomoea batatas)-wheat,maize+colocasia(Colocasia esculenta)-wheat,maize+turmeric(Curcuma longa),and maize+ginger(Zingiber officinale)were tested consecutively for three years(2020,2021 and 22)in a fixed plot manner at Dehradun region of the Indian Himalaya against the existing maize-wheat systems.The result showed that the maize+sweet potato-wheat system significantly reduced runoff loss(166.3 mm)over the maize-wheat system.The highest through fall(68.12％)and the lowest stem flow(23.54％)were recorded with sole maize.On the contrary,the maize+sweet potato system has the highest stem flow(36.15％)and the lowest through fall.Similarly,the maize+sweet potato system had 5.6 times lesser soil erosion and 0.77 t ha-1 higher maize pro-ductivity over the maize-wheat system.Furthermore,the maize+sweet potato system recorded significantly higher soil moisture(19.3％),infiltration rate(0.95 cm h-1),and organic carbon(0.78％)over the rest of the systems.The maize+sweet potato system also recycled the highest nitrogen(299.2 kg ha-1),phosphorus,(31.0 kg ha-1),and potassium(276.2 kg ha-1)into the soil system.Hence,it can be inferred that concurrent cultivation of sweet potato,with maize,is a soil-supportive,resource-conserving,and productive production model and can be recommended for achieving the circular economy targets in the Indian Himalayas.

Crop productivityErosionInfiltrationRunoffSoil sedimentation

Devideen Yadav、Deepak Singh、Subhash Babu、Madhu Madegowda、Dharamvir Singh、Debashis Mandal、Avinash Chandra Rathore、Vinod Kumar Sharma、Vibha Singhal、Anita Kumawat、Dinesh Kumar Yadav、Rajendra Kumar Yadav、Surender Kumar

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ICAR-Indian Institute of Soil and Water Conservation,Dehradun,Uttarakhand,248 195,India

Division of Agronomy,ICAR-Indian Agricultural Research Institute,New Delhi,110 012,India

ICAR-Indian Institute of Soil and Water Conservation,Research Centre,Kota,Rajasthan,324 002,India

ICAR-Indian Institute of Soil Science,Bhopal,Madhya Pradesh,462 038,India

Agriculture University,Kota,Rajasthan,324 001,India

ICAR-Indian Institute of Soil and Water Conservation,Research Centre,Koraput,Odisha,763 002,India

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2024

10.1016/j.iswcr.2023.10.002

国际水土保持研究(英文)

国际水土保持研究(英文)

ISSN：2095-6339
年,卷(期)：2024.(3)