Response of Tobacco Plant to Utilizing Modern Vitaminized Fertilizer Vitanoll during Seedling Period
The effect of the polymer fertilizer Vitanoll NP (N – 9–12, P – 28–30%) (at a dose of 0.3 ml/m2), applied together with irrigation water (1.0 l/m2) during the seedling period in the phases of development of tobacco plants “cross”, “ears” and “suitable for planting seedlings”, on the biometric indicators of seedlings was studied. Tobacco sowing was carried out on a long-term non-replaceable nutrient substrate with an artificially created nitrogen background at the rate of 50% of the optimal content of N35. Due to the higher-quality seedlings grown, this technique significantly increased the yield and quality of tobacco raw materials. A significant increase in the yield of the Large-leaved tobacco variety 9M reached 7.8 c/ha or 19% (the smallest significant difference or SSD05 = 2.3 c/ha), the Large-leaved variety-11 – 6.8 c/ha or 16% (SSD05 = 2.4 c/ha) to control. The economic effect in the field period due to the additional harvest was 156 and 136 thousand rubles/ha, respectively, for varieties.