Question

What are weeds? How can we control them?

Answer 1

An unwanted and uncultivated plant that grows with crops and competes with crops for nutrients and can also cause crop toxification. In conclusion, crop plants get fewer nutrients, light, and space for their growth. This, in turn, decreases their productivity.

Complete answer:
Weed is the undesirable plant that grows along with the crops called weeds. These weeds feed on the nutrients provided to the crops and thus reduce the supply of nutrients to the crops, thereby, hindering their growth. The growth of these weeds needs to be limited to enhance the growth of the plants
Weed, a general term for any plant growing where it is not wanted. When humans first effort the cultivation of plants, they have to fight the attack by weeds into areas selected for crops. Some undesirable plants later were found to have virtues not initially doubted and so were eliminated from the category of weeds and taken under cultivation.
Weeding
The technique of deduction of weeds is called weeding. To obtain this, weedicides are assigned, which are essentially chemicals precisely made to demolish weeds. They are yearly sprinkled before seeding and flowering.
The techniques of weed control are classified into the categories-
PREVENTIVE METHODS: They are utilized in advance or the occurrence of weed production.
CURATIVE OR REMEDIAL MEASURES:- Those utilized to tackle weed problems after they have arrived or appeared.
Weeding methods
Some important weeding methods are listed below:
-Weeds can be monitored by using weedicides: It is a chemical, which is sprayed in the fields to kill all available weeds. Weedicides khurpi harmful to crops.
-Tilling before cultivating crops also helps in removing weeds: Tilling uproots the weeds. The nicest time for the deduction of weeds is before they develop flowers and seeds.
-The physical method of eliminating weeds is with the help of a kauri. It encompasses regular uprooting or cutting of weeds near to the ground.
-Manual method: Stepping the field and pulling out the weeds.
-By motorized means: Using a trowel through the field that will load the space between the crop rows and cut/kill the weeds.

Note: Weed management is significant in agriculture. Techniques include hand cultivation with hoes, powered cultivation with cultivators, smothering with mulch, lethal wilting with high heat, burning, and chemical management with herbicides (weed killers).