Human activity can release nitrogen into the environment by two primary means: the combustion of fossil fuels, which releases different nitrogen oxides, and by the use of artificial fertilizers (which...Human activity can release nitrogen into the environment by two primary means: the combustion of fossil fuels, which releases different nitrogen oxides, and by the use of artificial fertilizers (which contain nitrogen and phosphorus compounds) in agriculture, which are then washed into lakes, streams, and rivers by surface runoff.
The movement of phosphate from the ocean to the land and through the soil is extremely slow, with the average phosphate ion having an oceanic residence time between 20,000 and 100,000 years. Soil and ...The movement of phosphate from the ocean to the land and through the soil is extremely slow, with the average phosphate ion having an oceanic residence time between 20,000 and 100,000 years. Soil and Sustainability and Biogeochemical Cycles and the Flow of Energy in the Earth System from Sustainability: A Comprehensive Foundation by Tom Theis and Jonathan Tomkin, Editors (licensed under CC-BY).
This page discusses studies on dryland agriculture in CORAF countries, highlighting farmer preferences for groundnut traits in Senegal, fertilizer impacts on cereal yields in Mali, counterfeit herbici...This page discusses studies on dryland agriculture in CORAF countries, highlighting farmer preferences for groundnut traits in Senegal, fertilizer impacts on cereal yields in Mali, counterfeit herbicides' effects on productivity, and climate change risks for Senegalese farmers. It also addresses consumer willingness to pay for millet-based foods in Niger.
