Role and Efficiency of Retardants in Tobacco Growing Technology

The effect of retardants on tobacco plants in the seedling and field periods has been studied. It was found that two-time treatment of seedlings with the Athlete retardant in the phases “ears” and “suitable for planting seedlings” at a dose of 3.0 ml/m² and a single treatment at a dose of 3.5 ml/m² in the phase “suitable for planting seedlings” contributed to the suspension of plant growth. There was a decrease in the length of tobacco plants by 3-17, a thickening of the stem diameter by 14-19, an increase in the mass of stems by 4-11 and the mass of roots by 44-50%. The yield of standard seedlings in the versions treated with a retardant increased by 5-6%. The degree of development of the root system of plants, established by the ability to retain a nutrient mixture, increased by 61-100%. A single application of the fertilizer with the retardant properties of Cultifort Raiz at a dose of 3.0 ml/m² in the phase “suitable for planting seedlings” contributed to a reduction in the length of tobacco plants by 2-8, an increase in the diameter of the stem by 5, the mass of stems by 8, roots by 68%. The ability of the root system to retain the greenhouse mixture increased by 118%. An increase in the yield of standard seedlings by 2% was noted. During the field period, the retardant effect of the applied agrochemicals persisted for 45 days after disembarkation. The best result in obtaining an additional yield of 6.2 c/ha (by 21%) was noted against the background of the use of the Athlete drug at a dose of 3.0 ml/m² with double treatment. When using the Athlete retardant at a dose of 3.5 ml/m² with a single treatment, the additional yield was 5.4 c/ha (by 18%). The use of Cultifort Raiz fertilizer at a dose of 3.0 ml/m² (once), contributed to an increase in the yield of raw materials by 3.9 c/ha (by 13%). In the application of the standard, the highest yield increase was obtained - 9.0 с/ha (by 30%). The accumulation of dry matter (materiality) in tobacco raw materials increased with increasing doses of agrochemicals. The use of retardants contributed to the improvement of the chemical composition of tobacco raw materials, namely, an increase in the number of Schmuck (carbohydrate-protein ratio).