Symbiotic potential of snap beans (Phaseolus vulgaris L.) depending on biological products in agrocoenosis of the Right- Bank Forest-steppe of Ukraine

Abstract

The topicality of the research is determined to the search for new approaches to the development of technological techniques for growing beans, taking into account the soil-climatic conditions of the Right-Bank Forest-steppe of Ukraine. The research on the dynamics of the formation and the symbiotic apparatus functioning has been carried out; the influence of the nodule bacterium's new strains on the activity of the symbiotic apparatus formation in the snap bean agrocenosis (Phaseolus vulgaris L.) has been investigated. It is proved that the use of biopreparations provides an increase in interphase periods. At the same time, the influence of the complex application of inoculation with bacterial preparations of Azotophyte-l, Biomag, Biocomplex-BTU-l on the basic symbiotic productivity indexes of snap bean crops, in particular the number and weight of active bulbils, the active symbiotic potential and yield of beans long pod of sorts of early ripeness group were studied. It was established that the use of the bacterial preparation of Biocomplex-BTU-l contributes to the increase of the number and the mass of bulb formations on the root system of the Zironka sort. The usage of a bacterial preparation Biocomplex-BTU-l contributes to receiving 18.4 t/ha or 9.4 t/ha of crop rise, and the correlation between yield and studied indexes were determined. The usage of Azotophyte-l and Biomag for pre-crop preparations of bean seeds is ineffective.