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they might carry harmful diseases,that can infect the other farm animals.
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various insects or plant diseases can reduce the amount of food is able to be harvested
Lar
Wiki User
∙ 14y ago
Wiki User
∙ 13y ago. pests in the crops should be controlled. we can kill pests by using pesticides . :D
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Why are preventive measures and biological control methods be preferred for crop protection?
If we don't implement preventive measures and bio-control methods pests and fungi may attack the crop.
Can Carnivorous plants be used to control insect pests?
Not practical bedause the carnies would have to outnumber (considerably!) the guarded crop.
What are the Botanical names of crops pest and crops it infest?
You need to be more specific. There are literally thousands of individual crop pests. Just for one crop, corn (maize), there are a minimum of six different weeds, four insect species, eight diseases, and three bird species, all of which are pests to that crop.
What are the advantages of natural predators helping crops?
Natural predators will keep unwanted insect numbers in balance. However, as most crop systems are monocrops (where a single crop is grown in an area) natural predators are unable to survive and no longer have an affect they use to on pests
How do biotic and abiotic factors affect crop production?
A variety of biotic factors such as pests, nematodes, diseases, etc. can reduce the net crop production. A pest causes damage to agriculture by feeding on crops. For example, the boll weevil is a pest on cotton. It attacks the cotton crop, thereby reducing its yield. Weeds also reduce crop productivity by competing with the main crop for nutrients, light, and space. Similarly, abiotic factors such as salinity, temperature, etc. affect the net crop production. Some natural calamities such as droughts and floods are unpredictable. Their occurrence has a great impact on crops sometimes, destroying the entire crop.
How is crop rotation important to farmers?
it helps control pests and diseases
Why are preventive measures and biological control methods be preferred for crop protection?
If we don't implement preventive measures and bio-control methods pests and fungi may attack the crop.
Does crop rotation and biological control achieve long-term suppression of pests in Integrated pest management?
yes
What has the author E J Vevai written?
E. J. Vevai has written: 'A compendium of know your crop, its pest problems and control' -- subject(s): Agricultural pests, Control, Field crops, Pests, Plant diseases
Can Carnivorous plants be used to control insect pests?
Not practical bedause the carnies would have to outnumber (considerably!) the guarded crop.
What are the causes of decline in crop yields?
Weeds, Pests, and Diseases.
What is organic cultivation?
Organic Cultivation is the practice of agriculture that uses techniques such as crop rotation, green manure, compost and Biological pest control, to control pests and maintain soil output on agricultural land.
How can farmers control the growth of insect pests?
Companion plants, crop rotation, herbicides, insecticides, natural enemies, plowing and tilling, resistant varieties, row covers, and soil drenches are ways that farmers control the growth of insect pests. Insect pests can shelter in weeds, whose presence can be eliminated by pre-emergent, target-specific herbicides that eliminate undesirable vegetation before they can take over resources and space and by soil drenches that eliminate ground-dwelling, surface-sheltering insect pests. Companion planting, crop rotation, natural enemies, resistant varieties, and row covers number among the more natural, non-synthetic, organic ways to control the growth and return of insect pests.
Why is it potentially dangerous to reduce the number of crop species in potatoes?
It makes the overall crop more susceptible to pests or disease.
What jobs need pesticides?
to destroy plant pests and to increase crop yield
Is paddy a cover crop?
Where paddy (rice) is grown, it is unlikely that it would be used as a cover crop due to the expense of production. A cover crop is a type of plant grown to suppress weeds, help build, improve, and protect soil, and control diseases and pests. Cover crops are generally destroyed before they can reach maturity in preparation for planting the actual cash crop.
What are the three categories into which crop pests can be grouped?
Fungal, herbaceous (i.e., weeds), and insect.
