In chemical control some kind of chemical is the killing agent, while in biological control the killing agent is a live organism. It may be a predetor or a bacteria or a paracite or fungi.
While the definition is simple there is a multitude of implications. A chemical may be long lasting or degradable, but it never thinks nor can it reproduce. Both can have side effects which at times cause more damage then the original pest/disease they were meant to treat does.
Some biological alternatives to the use of chemical pesticides is to use biological control agents like fungi, bacteria, or viruses.
what reason might a farmer have for using bioligical control instead of chemical pesticides
I don't know about controlling ALL chemical reactions in the body, but biological catalysts are known as enzymes.
Nervous coordination works through the nervous system of organisms - the network of neurons and such. Chemical coordination is hormonal control, and it works through the release of hormones into the blood to flow to target receptor cells.
Biological control is the beneficial action of predators, parasites, pathogens, and competitors in controlling pests and their damage.
In biological pest control the pests are killed with a living organism whilst in chemical cultural pest control a chemical is used.
In chemical control some kind of chemical is the killing agent, while in biological control the killing agent is a live organism. It may be a predetor or a bacteria or a paracite or fungi. While the definition is simple there is a multitude of implications. A chemical may be long lasting or degradable, but it never thinks nor can it reproduce. Both can have side effects which at times cause more damage then the original pest/disease they were meant to treat does.
A Control Point or "CP" is any step in the flow of food where a physical, chemical or biological hazard can be controlled. Where as A Critical Control Point or "CCP" is the last step where you can intervene to prevent, eliminate or reduce a hazard to an acceptable limit.
Some biological alternatives to the use of chemical pesticides is to use biological control agents like fungi, bacteria, or viruses.
difference between feedback and control
what reason might a farmer have for using bioligical control instead of chemical pesticides
pradatation
Mechanical means using machinery whereas biological means using another form of life to control the weed. Biological way is Eco-friendly. Go Bio whenever possible!
Biological, chemical, cultural, and mechanical controls are among the best-known and most-used of ways to keep pests in check. For example, biological control includes the use of natural enemies, chemical control involves powders and sprays, cultural control needs attention to proper cultivation procedures, and mechanical control requires fencing and row covers.
* Organic agriculture actually organic farming does use pesticides, what you're looking for is "biological control" which means it allows the use of synthetic fertilizers but trades chemical pest control with biological pest control. in biological control one applies parasitic wasps, entomophagic fungie and other such agents in much the same way one would apply chemical pesticides.
Biological control takes more roll in Integrated pest Management system where we are adopting the natural based methods inclusive of of Mechanical, Physical, Agronomical control methods, besides the Bio-control methods. comparatively the chemical control methods led to the following adverse effects which can be prevented by adopting Bio-control measures. 1.Creating Resistance power on Pests 2. creation of resurgence power , 3, poisoning the plant products(Foodgrains, fodders like straw) so that it make ill effect on human's and live stock's health 4. polluting the Air, Water, Soil, 5. Chemical control Very expensive than Bio control methods
J. A. F. Compton has written: 'Small farm weed control' -- subject(s): Bibliography, Control, Small Farms, Weeds 'Military chemical and biological agents' -- subject(s): Biological weapons, Chemical agents (Munitions), Chemical weapons, Herbicides, Pathogenic microorganisms, War use