Abstract
Unscientific land use and cropping techniques have led high soil erosion and degradation of soil quality in the mid-hills of Nepal. To understand the effects of land use systems for selected soil chemical properties in mid-hills, composite soil samples at 0 cm to 20 cm depth were collected from five different land-use systems: Grassland, forest land, upland, lowland, and vegetable farms from Dhading district of Nepal in 2017. Soil samples were analyzed for soil fertility parameters: Soil pH, organic matter (OM), total nitrogen (N), available phosphorus (P), available potassium (K) and its effect due to different land use systems were compared. Results showed that soil pH was neutral in vegetable farms (6.61), whereas the rest of the land-use systems had acidic soils. Soil OM (3.55%) and N (0.18%) content was significantly higher in forest, but the lowest soil OM (1.26%) and N (0.06%) contents were recorded from upland and lowland farms, respectively. Available P was the highest in the vegetable farm (41.07 mg kg−1) and was the lowest in grazing land (2.89 mg kg−1). The upland farm had significantly higher P levels (39.89 mg kg−1) than the lowland farm (9.02 mg kg−1). Available K was the highest in the vegetable farm (130.2 mg kg−1) and lowest in grazing land (36.8 mg kg−1). These results indicated that the land under traditional mixed cereal-based farming had poor soil health compared with adjacent vegetable, grazing, and forest lands among the study area. The variations in soil fertility parameters suggest the immediate need for improvement in soil health of traditional farmlands.
Highlights
The Nepalese economy relies heavily upon the agriculture sector, a source of livelihoods for65.6% of the country’s active population and contributes 29.23% to the total gross domestic product [1].Healthy and vigorous plants are produced by healthy soils which help to increase crop production and can address the food requirements for human consumption [2]
These results indicated that the land under traditional mixed cereal-based farming had poor soil health compared with adjacent vegetable, grazing, and forest lands among the study area
The variations in soil fertility parameters suggest the immediate need for improvement in soil health of traditional farmlands
Summary
The Nepalese economy relies heavily upon the agriculture sector, a source of livelihoods for. 65.6% of the country’s active population and contributes 29.23% to the total gross domestic product [1]. Healthy and vigorous plants are produced by healthy soils which help to increase crop production and can address the food requirements for human consumption [2]. Nepal is considered as one of the food insecure countries with very low (around 16%) arable land area [3]. About 86% of the total area of Nepal is occupied by hilly and mountain regions where cultivation is difficult, mainly due to topography [4]. Land usage in Nepal has been changing rapidly over the past decades.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
