Agricultural pollution refers to biotic and abiotic byproducts of farming practices that result in contamination or degradation of the environment and surrounding ecosystems, and/or cause injury to humans and their economic interests. Abiotic byproducts include pesticides and herbicides applied to agricultural land to control pests that disrupt crop production. Soil contamination can occur when pesticides persist and accumulate in soils, which can alter microbial processes, increase plant uptake of the chemical, and also cause toxicity to soil organisms. Fertilizers, such as nitrogen and phosphorus are another important abiotic byproduct that, if incorrectly managed, can have negative environmental consequences.
The section looks both at the environmental impact of industrial agriculture and at the way anthropomorphic climate change can negatively affect the global food supply chain. This relationship involves a variety of factors from the soil, to water, the air, animal and soil diversity, people, plants, and the food itself. Some of the environmental issues that are related to agriculture are climate change, deforestation, genetic engineering, irrigation problems, pollutants, soil degradation, and waste.