GENERAL KNOWLEDGE

Detailed explanation-1: -The isolation distance for the foundation seed of rice is 3meters. The isolation distance is essential to prevent pollination from unwanted pollen in the case of cross-pollinated and often cross-pollinated species.

Detailed explanation-2: -The isolation distance required for effectively preventing cross-pollination depends largely on the mating system of a species and can range from 10 feet for primarily self-pollinating grains, such as oats, to several miles for cross-pollinating crops, such as spinach.

Detailed explanation-3: -An isolation distance of 500 m is kept between two varieties. This is necessary in case of pedigree or certified seed production. For stock or foundation seed production, isolation distance should be kept 1000 m.

Detailed explanation-4: -The minimum isolation distance required for a foundation seed crop is markedly greater than that for a certified seed crop in the case of all those crops where pollen contamination is feared. The land should be level, fertile and free from noxious weeds common to the crop.