Government need to focus towards this and should force by Law to the farmers to at least use one acre or 5% of land for production of mustard crop.
By this we can easily save 2 or 3 billion dollars of import bill as well as add a rewarding short period crop to the farmers. Refining Plants are not very expensive and huge units can be built in a span period of one year as well as crop period is 3 to 4 months only.
Government only need to arrange good rewards for the farmers and arrange crop buying at door steps.
Also Government can lease Government land to the farmers or can provide interest free loans for mustard crop only.
Secondly Government need to focus on lower ground water reserves. We need to add resources and find non-conventional methods of arranging water and raising ground levels of water. One way is to use sea water, however it can be very expensive but we need to make a study on this.