Question Bank - General Science

Here's the question bank on all the general science topics.

Which of the following is the best method to remove the weeds?

A.
Manually uproot the weeds
B.
Manually remove he flowers and seeds
C.
Burn the stubble after harvesting the crop
D.
Spray weedicide

Solution:

The correct answer is manually uproot the weeds.Explanation:Weeds are unwanted plants that grow alongside crop plants in a cultivated field, reducing crop yield.Weeds compete with landscaping plants for water and nutrients.To prevent weeds from spreading, remove them before they produce flowers and seeds.When weeds have well developed in the field, pulling them with a weeding tool or by hand may be the best option.Mechanical methods of weed removal are the most effective. Weeds can be removed by hand uprooting.Weeds can also be removed with a trowel or a large comb-like harrow.Additional InformationOther methods for removing the weeds are:Cultural methods: Weed growth can be reduced using cultural methods such as timely seeding in properly prepared beds, intercropping, and crop rotation.Chemical methods: Weeds can be eradicated by spraying chemicals known as weedicides.Biological methods: Certain insects and crop plants inhibit weed growth.

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