India, the world's top rice exporter has imposed a 20% tax on shipments of certain rice grades in a move that could worsen the food crisis.

India has also banned the exports of 100% broken rice (fragments of rice grains), which is mostly used for animal feed.

According to the US Department of Agriculture, or USDA, India accounts for about 40% of global rice exports.

This 20% tariff on certain rice grades is expected to increase global food prices, which is expected to increase prices of staple grains.

According to the Agriculture depertment of US, China and the Philippines are the world's top two major grain importers.

Due to lack of rains in several Indian states this year, paddy planting in India has been severely disrupted, forcing India to take such a decision.

In the last three months, states like Manipur, Tripura, West Bengal, Jharkhand, Bihar and Uttar Pradesh received below average rainfall.

In India, the state of West Bengal is the largest producer of rice. Almost half of its arable land is under paddy cultivation.

After wheat and sugar, rice is India's third major agricultural commodity to face export restrictions this year.