Explanation:

Ans. Protein 

Maize occupies 6.49 lakh ha with production of 13.60 lakh tonnes and productivity of 2.1 tonnes /ha. Winter maize is popular in Bihar due to its high yield potential, and the area, predominantly under hybrid cultivation, is on increase. The productivity of winter maize decreased from 3,094 kg/ha in 2004-05 to 2,641 kg/ha in 2005-06. The low productivity is mainly due to non-availability of adequate quantity of seeds of high-yielding hybrids. During kharif, maize suffers from waterlogging and floods, while in autumn, crop suffers from moisture stress. In the frontline demonstrations, average productivity of 6 tonnes/ha has been realised, with levels up to 8 tonnes/ha also recorded in farmers fields. In view of this, suggested interventions for enhancing productivity are:

 Seed production of QPM hybrids within the state

 Cultivation of QPM hybrids HQPM 1, Shaktiman 1, Shaktiman 2 and Shaktiman 3, Shaktiman 4; and normal grain single cross hybrids DHM 115, JH 3851, Prakash, HM 5; and HM 4 for baby corn

 Winter maize as a better alternative to wheat under rice-wheat system due to rising temperature

 Intercropping with potato, pea (for green pod) and vegetables in winter maize for additional income of Rs 6,000 -12,000 per ha.