Why chemicals are used in farming?
Spraying agricultural chemicals is a useful way to control insects, diseases and weeds and is important for growing high-yielding, quality crops and pasture.
What chemicals are used to protect crops?
The main classes of crop protection chemicals are herbicides, insecticides and fungicides. Selective herbicides, for example, control the growth of weeds which would otherwise grow among a crop, competing with it for water, nutrients and sunlight.
What chemicals are used in fertilizers?
Synthetic fertilizers Modern chemical fertilizers include one or more of the three elements that are most important in plant nutrition: nitrogen, phosphorus, and potassium. Of secondary importance are the elements sulfur, magnesium, and calcium.
What do farmers spray on fields?
What is crop spraying? Crop spraying is the process of spraying insecticides, pesticides, fungicides and other preventative treatments onto crops. Previously known in agricultural services as ‘crop dusting,’ the process is used to cover large areas of crops and protect them from local bugs and pests.