HORTICULTURE SCIENCE
PLANT BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It makes weeding easier and cheaper for farmers
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It keeps animals away from crops
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Plants grow taller and stronger
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It makes more organic crops
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Detailed explanation-1: -They work fast. They can be removed quickly in critical situations. Herbicides are relatively cheap, and most of the time cheaper than manual weeding. They can destroy plants bearing diseases.
Detailed explanation-2: -Herbicides are used in agricultural and wildland ecosystems to reduce the density of weeds and promote the growth of desirable species. Use of herbicides in agroecosystems may change composition of weed populations. In wildlands, herbicides may increase the diversity of native species.
Detailed explanation-3: -The most direct effects of herbicide pollution are decreased condition, growth, and reproduction, and increased mortality, of plants (i.e., macrophytes, periphyton and phytoplankton).
Detailed explanation-4: -Flooding. The flooding of fields is the most effective method of cultural control of weeds in rice.