|Production of Rice Seed in Irrigated Environments|
|Isolation for rice seed production|
|Be able to understand the need for maintaining the appropriate isolation distance between seed production plots.|
|Although rice crop is a self-pollinated crop, cross pollination of up to 5% can occur due to:
|isolation||Isolation is the separation of a seed crop from all possible sources of contamination during the growing period and is one of the main ways of maintaining varietal purity.
Isolation is primarily achieved through maintaining a safe distance between different crops.
The "isolation distance" between a seed crop of a particular variety and a crop of a different variety is a space separating the crops large enough to prevent cross pollination.
Research has shown that a 3 meters isolation distance from other varieties is needed for rice seed production. That is, the use of a 3 meters buffer zone surrounding a crop will prevent cross-pollination.
The isolation distance is compulsory for seed producers if they wish their multiplied seeds certified by the appropriate authority.
|The next lesson reviews weed management in rice seed fields.|