COH (M) 4 : a new three way cross maize hybrid for Tamil Nadu

摘要

COH (M) 4 is a medium duration (90-95 days) maize hybrid suited for cultivation both under rain fed (Sept.-Oct) and irrigated (June-July and Jan-Feb) conditions. It has a yield potential of 11422 kg of grains and 19.0 tonnes of fodder per hectare. This hybrid is moderately resistant to downy mildew disease and maize stem borer. It possesses desirable characters such as high starch (70.90 percent), protein (11.12 percent) and fat (5.08 percent). For hybrid seed production, the female UMI 90 X UMI 285(Fj) is to be sown first and 4 days after that, male parent UMI 112 can be sown with the ratio of 6:2. The cobs are fully covered with husk and the percentage of seed set is very high. Grains are bold, yellow in colour and flint in texture. It is recommended for cultivation in Tamil Nadu in the place of COH 3 maize hybrid.