Abstract

                                A high yielding blackgram culture COBG 653 is a cross derivative of DU 2 x VB 20 and matures in 60 - 65 days. This culture recorded an average yield of 877 Kg/ha with a yield increase of 24 per cent over the national checks varieties LBG 402 and LBG 17 under All India Co-ordinated trials. This was released for cultivation during rabi season in south zone consisting of Tamil Nadu, Andhra Pradesh, Karnataka and Odisha. In the state trials, it recorded an average yield of 733 Kg/ha with a yield increase of 13.46 per cent over VBN (Bg) 4, 12.42 per cent over VBN (Bg) 5 and 16.86 per cent over CO 5. It has bold seeds with a mean 100 seed weight of 5.5 grams. It is determinate and has synchronized maturity. It has good batter qualities like high initial batter volume and volume after fermentation. The protein content is 23.8 per cent. It is moderately resistant to mungbean yellow mosaic virus (MYMV), stem necrosis and root rot diseases. It is tolerant to aphids, stemfly and spotted pod borer infestation. This variety was notified recently as per the reference S.O. 632(E) dt. 25.03.2011. It is best suited for cultivation during rabi season in Tamil Nadu.

Key words : Blackgram, Vigna mungo, COBG 653, seed yield, short duration, TNAU Blackgram CO 6