Agricultural practices impact stream nutrients and soil health

Recent academic research has examined the environmental impacts of various agricultural practices on soil and water ecosystems.

One study focused on the Mpanga and Dura catchments in Uganda, investigating how agricultural intensity affects nutrient processing (PO43-, NO3-, and NH4+) in streams. Field studies conducted at 16 locations revealed that the highest nutrient concentrations were found in areas used for crop farming and livestock, rather than in tea plantations. However, stream metabolism was found to be highest in tea plantations.

Another study investigated soil health by analyzing the diversity and functional roles of Cercozoa, a dominant group of soil protists. The research compared different land-use intensities, including conventional and conservation agriculture, market gardening, and field margins. Findings indicated that soils with lower land-use intensity possessed higher diversity and more complex microbial communities. Conservation agriculture and market gardening were associated with higher levels of humus and microbial biomass, with organic carbon and nitrogen identified as primary drivers of community composition.