Question

how much of our arable land is under irrigation?​

Answer 1

Answer:

here is your answer mate !

Explanation:

Rainfed agriculture covers 80% of the world's cultivated land, and is responsible for about 60% of crop production. Today, irrigated agriculture covers 275 million hectares – about 20% of cultivated land – and accounts for 40% of global food production.

Answer 2

ANSWER

Explanation:

It is estimated that in the developing countries at present, irrigated agriculture, with about a fifth of all arable land, accounts for 40 percent of all crop production and almost 60 percent of cereal production.