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What is weed? Explain the different methods of weed control.
a. Weeds are plants growing in an agricultural field.
b. Weeds grow along with crops and compete for nutrients, sunlight, water, space, and other resources.
c. Weeds do not affect the growth and development of crops.
d. Weeds cause undernourishment of crops and lead to low yield.
e. The of weeds is called weeding.
f. In , weeds are destroyed physically. with the help of weeding holes is the oldest and most efficient method for controlling weeds.
g. The destroys weeds of all categories. It is performed before sowing crops. Weeds are uprooted, killed, which then dries up and get buried in soil and exposed to the sun's heat by deep ploughing.
h. In , deep ploughing is performed after the harvest of rabi crops to expose the underground parts of weeds to direct sunlight. It is performed during the summer months, which helps destroy annual and perennial weeds.
i. In , biological agents like insects and pathogen are used to control weeds. The aim is not eradication but is reduction and regulation of weed population.
j. Chemicals used for killing or inhibiting the growth of weeds are called . This method is useful and effective in weed control. They are mixed with water and sprayed over the crops using a sprayer. They kill only the weeds protecting the main crop.
k. The combines different agronomic practices and herbicides to manage weeds. It reduces the reliance on one weed control technique. Mechanical, biological, cultural, and chemical methods are included in integrated weed management.
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