Biology, asked by tapasrimallick6451, 1 year ago

Explain various effect of weed on crop plant

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Answered by Anonymous
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⭐weeds is most severe when the competing plants are having similar vegetative habits and almost similar demand upon available resources.

↪ Hence, if weeds are not smothered at early stages, they become seriously titive in later stages and cause considerable reduction in crop yield.

⭐Weed competition mostly depends upon certain factors like type of weed species and its duration, competing ability of crop plant, severity of infestation and especially soil moisture and climatic condition for its favorable growth.

↪Most of the weeds complete their life-cycle within a very short time when compared to the crops in which they occur. Losses caused by weeds exceed the losses from any other agricultural pests. It is estimated that among the annual agricultural loss, weeds account for 45 % , insects 30 % , disease 20 % and other pests 5 % . Thus , of the four groups of agricultural pests , the greatest losses are caused by weeds.

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