Question

What will be the effect on the growth of crop plants if werds are not removed froms the field?​

Answer 1

Answer: If the weeds are not removed then the nutrients needed by the crops will be absorbed by the weeds resulting in bad crops.

Explanation: Weeds are plants which grow on their own on sides of crops, plants or in open lands.

Hope it helps

Answer 2

Impact of weeds on crops:

1. Competition for mineral nutrients: Being hardy and vigorous in growth habit; they soon outgrow the crops and consume large amount of water and nutrients.
2. Competion for water: For producing equal amount of dry matter, the weeds, in general transpire more water than most crop plants.
3. Competition for Solar Energy: About 99% of dry matter in plants is made up of organic matter that is dependent on solar energy.
4. Competition for space: Weeds compete for space both in the rhizosphere and atmosphere. In the presence of weeds, crop plants also have limited space to develop their shoots, which amounts to reduced photosynthesis in them.
5. Weeds reduce the crop quality: Weeds may reduce the quality of the crop produce in many ways. Weed seed like wild mustard, sweet clover, a Mexican poppy and bulblets of wild garlic and wild onion when threshed and ground with winter grains can results in serious consequences besides imparting objectionable odour to the flour.
6. Weeds damage human health: Health, comfort and work efficiency of man are also affected by weeds directly or indirectly.
7. Less efficient use of land : In case of perennial weeds, the carrying capacity of the grazing lands is reduced and cause depreciation of land value.
8. Increase in cost of cultivation: In fields of crops infested with weeds, the tillage operations require high cost.

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