Title: Environmental impact of agriculture - Wikipedia
Headings: Environmental impact of agriculture
Environmental impact of agriculture
Contents
By agricultural practice
Animal agriculture
Irrigation
Pesticides
By environmental issue
Climate change
Deforestation
Genetic engineering
Pollutants
Soil degradation
Tillage erosion
Waste
Issues by region
Sustainable agriculture
Regenerative agriculture
Techniques
Conservation tillage
Biological pest control
See also
References
Further reading
External links

Content: Irrigation with saline or high-sodium water may damage soil structure owing to the formation of alkaline soil. Pesticides
This section is an excerpt from Environmental impact of pesticides [ edit]
Preparing to spray a hazardous pesticide
Drainage of fertilizers and pesticides into a stream
How pesticides are used
The impact of pesticides consists of the effects of pesticides on non-target species. Pesticides are chemical preparations used to kill fungal or animal pests. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, because they are sprayed or spread across entire agricultural fields. Runoff can carry pesticides into aquatic environments while wind can carry them to other fields, grazing areas, human settlements and undeveloped areas, potentially affecting other species. Other problems emerge from poor production, transport and storage practices. Over time, repeated application increases pest resistance, while its effects on other species can facilitate the pest's resurgence. Each pesticide or pesticide class comes with a specific set of environmental concerns. Such undesirable effects have led many pesticides to be banned, while regulations have limited and/or reduced the use of others. The global spread of pesticide use, including the use of older/obsolete pesticides that have been banned in some jurisdictions, has increased overall.