ECONOMIC AND BIOENERGY EFFICIENCY OF CHICKPEA BACTERIZATION BY MESORHIZOBIUM CICERІ ND-64

Objective. Study the effect of chickpea seed inoculation with a suspension of Mesorhizobiumciceri ND-64 on crop yields, calculate the economic and bioenergy efficiency of seed bacterization.Methods. Microbiological, field experiment, economic, statistical. Results. It was shown that presowing inoculation of chickpea seeds with M. ciceri ND-64 during cultivation of this culture inPolissia of Ukraine conditions contributed to the increased efficiency of legume-rhizobial symbiosis. During three years of research there was an increase in structural parameters: the numberof beans per plant — by 15–42 %, seeds from the plant — by 12–32 %, weight of seeds from theplant — by 12–37 %, weight of 1000 seeds — by 6–9 % relative to positive (with inoculation usingreference strain of M. ciceri H-12) and absolute (without inoculation) controls, respectively. Theyield of Pamiat variety chickpeas increased by 12.8–26.5 %. The amount of profit when bacterialsuspension of M. ciceri ND-64 was applied for seed bacterization per 1 ha of sown area was UAH10,795 and the level of profitability was 106.1 %. The payback of each hryvnia of additional costswith additional income was UAH 19.43 after inoculation with M. ciceri H-12 and UAH 30.88 after M. ciceri ND-64. With anthropogenic energy consumption of 10,479 MJ in the variant with bacterization using M. ciceri ND-64 per 1 ha of sown area, the energy content of the obtained grain was26,181 MJ, respectively, the energy efficiency coefficient was 2.50. The additional energy costs associated with the use of M. ciceri ND-64 were 16.56 times paid back by the energy of the additionalcrop. Conclusion. The use of M. ciceri ND-64 for pre-sowing inoculation of chickpea seeds ofPamiat variety provided an increase in the number of seeds from the plant by 42 %, weight of seedsfrom the plant by 32 %, weight of 1000 seeds by 9 % and increase crop yields by 26.5 % relative tocontrol when the crop was cultivated in Polissia area during three years of research. All parameters of economic and energy efficiency of pre-sowing bacterization with M. ciceri ND-64 are moreeffective in comparison with inoculation using M. ciceri H-12.