THE EFFICIENCY OF SEED TREATMENT IN OATS CULTIVATION IN CONDITIONS OF THE UKRAINIAN FOREST-STEPPE

Abstract

The epiphytotic development of the most dangerous diseases causes significant crop losses among grain crops, particularly oats. These diseases include root and crown rot, smut diseases, and crown rust. The grain shortage caused by these diseases can reach 15–40 %. Modern oats protection from diseases is considered to be an important condition for obtaining a high quality harvest. The pre-sowing treatment of seeds with fungicides is an integral part of intensive grain growing technologies. Our research was aimed at studying the effectiveness of pre-sowing seeds treatment with fungicides in combination with micro fertilizers, and their action on the disease resistance and oats productivity. The production experiment investigated into the impact of fungicides in combination with micro fertilizers on sowing qualities, seed damage, disease resistance and yield of oats. The complex treatment of oats seeds with Vincyt 050CS (6 l/t) and Oracul (solution, 1.0 l/t) as well as Fundazol (wettable powder, 2.4 l/t) and Oracul (solution, 1.0 l/t) led to the increase in germination energy by 4.2 % and 5 % and laboratory germination by 3 % and 4.2 % respectively. The pathogen damage decreased by 23–24 % (Alternaria spp. species), 9–11 % (Fusarium spp. species), and 4 % (Bipolaris soroziniana) compared to the control variant. The separate oats treatment with fungicides Vincyt 050CS (2.0 l/t) and Fundazol (wettable powder, 3.0 l/t) as well as in combination with the micro fertilizer Oracul (solution, 1.0 l/t) proved to be an effective means in controlling common root rot and crown rust of the grain crop. During the milk-wax stage of ripeness the technical efficiency of all examined preparations against crown rust was in the range of 13.9–37.5 % (disease spread) and 21.9–48.9 % (disease development). The combined application of seed treatment with fungicides together with the micro fertilizer promoted to an increase in oats yield by 1.0 and 0.78 t/ha compared to the untreated variant

Keywords

• oats
• common root rot
• crown rust
• fungicide
• micro fertilizer
• technical efficiency
• yield