Guava (Psidium guajava L.) known as "apple of tropics" belongs to family Myrtaceae. It is one of the dominant fruit crops of tropical and subtropical regions of India which bears delicious fruits in three different seasons' viz., summer, rainy and winter crops having lots of nutritional value and processing potential. In India, guava is the fourth most important fruit

A field experiment was conducted at research farm of IFSR Project, College of Agriculture, Indore, (M.P.) during Kharif 2018-19 in order to develop energy efficient sustainable maize production system. Maize production system had two factors which, laid out in factorial randomized block design and replicated thrice. Among the studied two factors, first factor was variety which consist two levels i.e. V1 (JM 216) and V2 (JM 218) and the second factor was N scheduling which consist six levels namely N1 to N6 which contained various proportion of N including foliar spray and scheduled at different stages. The results indicated that, nitrogen fertilizer share (62%) maximum of total input energy of production system. Among the levels, maize variety JM 218 and N scheduling N5 (33.3% N at sowing + 33.3% N at knee high stage + 1% N foliar spray at 40 DAS + 32.3% N at tasseling stage) were found promising since it recorded maximum value of output energy (115238 and 116306 MJ ha -1 ), net energy (103417 and 104468 MJ ha -1 ), energy efficiency (9.04 and 9.83), energy productivity (0.52 and 0.52 kg MJ -1 ), energy profitability (8.75 and 8.83) and energy intensity in economic terms (3.21 and 3.21 MJ Rs -1 ) respectively. It could be concluded that the maize variety JM 218 and N5, N scheduling would be more profitable compared to others combinations for developing an energy efficient sustainable production system.