Question

what are the negative effects of weeds
need answer in brief ​

Answer 1

Answer:

They interfere in harvesting. They compete with crop plants for water, nutrients, space and light. They affect plant growth. Presence of weeds increases the cost of agriculture and hinders the progress of work.

I hope it help you.

Answer 2

They interfere in harvesting. They compete with crop plants for water, nutrients, space and light. They affect plant growth. Presence of weeds increases the cost of agriculture and hinders the progress of work