Efficiency of bacterization of seeds of chick pea of grade Skarb with new strain of Mesorhizobium ciceri

Abstract

The purpose. To study effect of bacterization of seeds of chick pea of grade Skarb with new strain of Mesorhizobium ciceri upon efficiency of fabaceous-rhizobial symbiosis. Methods. Microbiological, gas-chromatographic, field experiment, statistical. Objects of researches — chick pea of grade Skarb, strains of nodule bacteria Mesorhizobium ciceri. Field researches in 2018 were carried out on experimental fields of Selection-genetic institute — National center of seeds growing and strain investigation (SGI-NCSGSI, Odessa oblast) and Institute of agricultural microbiology and agroindustrial production of NAAS (IAMAIP, Chernihiv oblast). Sowing of chick pea was realized manually on plots with area 5 m2 (SGI-NCSGSI) and 8 m2 (IAMAIP). Frequency of experiments — 4, disposition of alternatives — randomized. Mathematical processing was made by means of program Microsoft Office Excel 2007. Results. New strain M. ciceri 2 is secreted from nodules of plants of chick pea of grade Pamiat, taken on fields with active local population of rhizobia, which was generated as a result of long-term growing of chick pea in crop rotation. Preseeding bacterization of seeds of chick pea with strain M. ciceri 2 at growing this crop both on fields without local population of nodule bacteria of chick pea, and on the background of active population of M. ciceri positively influenced formation of fabaceous-rhizobial symbiosis. So, average height of plants increased on 10–17%, amount of legumes for a plant — on 23–55%, amount of seeds for a plant — on 27–46%, mass of seeds foe a plant — on 27–35%. Conclusions. New strain M. ciceri 2, secreted from nodules of chick pea of grade Pamiat, forms efficient symbiosis with plants of chick pea of grade Skarb both at absence and presence in soil of active rhizobia population of chick pea.