ATTENDANCE OF THE INSTITUTE’S EXPERIMENTAL FIELDS BY THE METHODOLOGICAL COMMISSION

On April 30, 2025, the methodological commission of the Yuriev Plant Production Institute of NAAS attended experimental fields (Elitne village, Kharkivskyi District, Kharkivska Oblast) in order to inspect early spring and winter crops after the April 27-28 frosts.

About 20 fields were inspected. Plants of post-black fallow sown winter wheat cultivars, depending on sowing time, were 28-45 cm tall (2-4 internodes); plants of post-pea sown cultivars were 25-40 cm tall (2-3 internodes), post-soybean sown winter wheat was 25-35 cm tall (2 internodes); and post-sunflower sown winter wheat was 22-42 cm tall (2-3 internodes). Plants of winter rye cultivars and hybrids sown after black fallow were 32-59 cm tall (3-4 internodes), with some plants being at the end of the stem extension phase (spike outlines were seen in the middle of the stem). Plants of post-black fallow sown winter triticale cultivars were 30-43 cm tall (3-4 internodes); and plants of post-pea sown winter triticale cultivars were 28-38 cm (3 internodes).

Spring wheat cultivars were 21 - 29 cm tall (3-4 leaves – tillering onset). Spring barley cultivars were 18-28 cm tall (3-4 leaves – tillering; formation of 1 internode in some fields). Spring triticale cultivars were 11-23 cm tall (1-2 leaves). Pea plants were 8-14 cm tall (above the soil surface) (3-5 leaves).

It was found that frosts damaged pea, spring barley and spring wheat plants in some fields. The frost damage ranged from 10% to 90% of plants in the damaged plots and depended on crops, plant development phases, varietal specificity, and field microreliefs. The plant damage degree varied from mild to medium. The greatest damage was observed in pea, spring wheat and spring barley fields located in lowlands. The frost exposure-related varietal characteristics of these crops require additional research, which was recorded by the Institute's commission in the inspection report.

No significant damage to plants was observed in the spring triticale or winter crop fields.

Considering the field condition, the commission recommended further monitoring of damaged areas of early spring crops and suspending the treatment of crops with post-emergence herbicides for 3-4 days.