Question

how do weeds affect plant growth ?​

Answer 1

Weeds will grow faster than the plants and grass, which allows them to spread up and out. The weeds can then steal precious soil space from other plants, and cast a shadow over others that will block sunligh.

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Answer 2

Answer:

Farmers are often concerned that weeds may reduce crop yields. Weeds use the same nutrients that crop plants use, often in very similar proportions. They also use resources such as water, sunshine and space that might have gone to crops. ... Weeds that compete aggressively with crops reduce their yield.