Biomics

In the conditions of the field experiment, the efficiency of using biological preparations based on the growth-stimulating bacteria Paenibacillus ehimensis IB 739 (VKM B-2680D), Pseudomonas koreensis IB-4 (VKM B-2830D), Pseudomonas chlororaphis IB-51 for preseeding pea plants (Pisum sativum L.). It was found that the presowing treatment of pea cultures strains Paenibacillus ehimensis IB 739 and Pseudomonas koreensis IB-4 has a positive effect on plant growth and nodule formation. All biological preparations help to reduce the spread of root rot (biological efficiency 39.9-47.9%). Minor effectiveness against powdery mildew was noted for the biopreparation based on the strain Pseudomonas koreensis IB-4. It was found that the content of nitrogen in the green mass exceeded the control values by a factor of 1.5 during the flowering phase in the variant where the plants were treated with a biological preparation based on Pseudomonas koreensis IB-4. In all the variants of the experiment where biological preparations were used, it was noted that nitrogen accumulates mainly in the above-ground vegetative organs (leaves and stems), whereas in the control the nitrogen content in the roots and green mass is approximately at the same level.

PGPR, seed peas, nitrogen fixation, nodules, root rot, powdery mildew

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