Optimum plant population ha^-1 for cotton has estimated as

The optimum plant population or density of a crop plantation is the arrangement per unit area that allow crops to exploit resource optimally and produce high yields.
The optimum plant population per hectare for cotton has estimated as 50,000 - 80,000.
India has about 37% of the world's area under cotton cultivation and is the largest producer of cotton in the world accounting for 22% of total production.