Tr-Rnr-21, a New Medium-Duration Rice Variety, Released in Andhra Pradesh (A.P.)

This article 'Tr-Rnr-21, a New Medium-Duration Rice Variety, Released in Andhra Pradesh (A.P.)' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world