The rizolic biological preparation as means of increasing quantity and quality of soybean yields

Abstract

The purpose of this work was to test under field conditions the efficiency of the Rizolic biopreparation, containing the strain Rhizobium japonicum RD2, forthree new varieties of soybean plants –Aura, Indra, and Enigma. According to the obtained results, the seed bacterization by Rizolic had mostly positive impactson the tested soybean varieties. The highest soybean yield was observed forthe bacterized Enigma and Indra varieties (1430 and 1370 kg/ha respectively). The highest stimulation of the soybean yield was in the Indra case (+210 kg/ha as compared to the control without bacterization). The highest protein content was in the cases with thebacterized Indra and Aura varieties(39,3% and 39,5%respectively). Aura was the only variety of soybean plants thathad a mixed reaction to the bacterization with Rhizobium japonicum RD2 – the protein content was 2,3% higher and the bean yield was 120 kg/ha lower (reaching the total amount of 1120 kg/ha) than the ones in the control without bacterization.