Using insects as weed control agent

Pathogens that can be used to control weeds are fungi. Fungi have a great ability to control weeds in annual and perennial crops.

The cost of producing mushrooms is lower than that of insects and they are more specialized than insects in choosing a host. Therefore, they are considered useful factors in weed control. For example, we can control cypressus esculentus by puccinia canalicuicu; ated, which is the cause of rust disease, pointed out.

The use of this fungus in early spring in the host field reduced the growth of oysters and tuber formation by 46% and 66%, respectively, and completely prevented its flowering.

no formulation

Of course, no formulation has been developed for the fungus so far (Fanak et al. 1987). (Alternaria cassaiae) is also used as a microbial herbicide to control important weed species on soybean fields in the southeastern United States.

There have also been reports of weed control of corn and cotton fields by pathogens. In using this method, it is important to note that the insect or pathogen used does not use the host crop.

Using this method to control weeds in the crop family can increase the risk of pathogen attack on the crop.

To avoid this risk and make an informed and helpful choice, you need to know enough about the biology and course of life, nutrition, reproduction and how it damages and hosts of pests or pathogens.

most important aspects of production in any agricultural system

Weed control is one of the most important aspects of production in any agricultural system and organic farming, which is of great importance and needs to use its own principles and methods.

Due to competition with crops for environmental factors and inputs, weeds reduce the quality and quantity of the product and create a suitable shelter for insects and pathogens that can be problematic.

The large sums of money that farmers spend each year to reduce the adverse effects of weeds on their crops, as well as the damage they suffer due to lack of adequate weed control, show the importance of this issue.

Currently, American farmers spend about $ 2.6 billion a year on weed control, of which $ 6.3 billion is spent on purchases and about 200 million kilograms of various herbicides.

In the United States, about 50 percent of all plowing operations are related to weed control, which requires the use of four and a half million tractors and an annual consumption of 75 billion liters of crude oil.

Due to the great role of herbicides in today’s agriculture, some factors have led to the need to re-evaluate the use of this method is recommended.

– Drinking water sources such as rivers and groundwater aquifers are contaminated with herbicides and this has led to diseases such as leukemia.

The high cost of preparing and consuming these pesticides has caused farmers to use less of these substances and to increase their profits by using appropriate and less expensive methods.

Based on the experiences of farmers and the results of research conducted by researchers, it has been determined that in agriculture there are a number of physical and biological methods to control weeds that can reduce the dependence of farmers on herbicides. Improve local living conditions and provide appropriate profits in production.

The most important alternatives are crop rotation, use of intercropping system, planting of cover crops with allopathic properties, use of pathogens and weed pests, and implementation of special methods in plowing.

About weed

Weeds may reduce yields by delaying harvest operations, lowering crop quality, and producing seeds and creating underground stems that contaminate the farm and most crops.

On the other hand, weeds also have benefits and improve soil fertility and soil structure, as well as host for beneficial organisms or pests and diseases, some of which are useful for livestock and humans, preparing mulch and preventing erosion. Elementary and harvest stage.


The purpose of organic management criteria is to maintain the weed population at a level that does not lead to economic loss of crop cultivation or damage to its quality.


Weed control methods:

  1. Implementation of crop rotation in weed control
  2. Mixed cultivation
  3. Use of cover plants in weed control
  4. Use of pathogens and weed pests
  5. Use special plowing and irradiation methods
  6. Use of torch grass
  7. Use weeding geese and chickens
  8. Manual weed removal
  9. Use of authorized herbicides
  10. Weed control in growing organic vegetables
  11. Minimize weed populations from the beginning
  12. Prevent weed germination by using different types of mulch
  13. Coating products and complementary products
  14. Direct control methods

Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent v

Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent v

Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent Using insects as weed control agent v


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