Promising essential oil plants from the Lamiaceae family, the raw materials of which are a source of valuable essential oil for pharmaceutical, perfume, cosmetic and food industries, pertain to the Monarda L genus. The Monarda didyma L. and Monarda fistulosa L. species were first imported to...

For the implementation of productive potential of soybeans, it was presented an effective method of post-harvest residue destruction with the biologics in rice crop rotation. The research was conducted at the Institute of Rice of NAAS during 2016–2018. In autumn, post-harvest rice residues were treated with the Biocomplex-BTU Ecostern biodestructor (1l/ha) in combination with carbamide (concentrated amide water-soluble fertilizer) (30 kg/ha). The variant with the carbamide application (30 kg/ha) in autumn was a control. The application of the Biocomplex-BTU Ecostern biodestructor (1 l/ha) in combination with car-bamide increased the total number of pathogenic and saprotrophic fungi in the soil from 65.5 to 80.5 thou-sand/g of soil, or 22.9 %. Thus, the pathogenic microflora content in the studied variant was lower than in the control (carbamide application at rate of 30 kg/ha) by 21.8 %, and the number of saprotrophs increased 3.3 times. When Ecostern biodestructor and carbamide were combined for application, the number of antagonistic fungi doubled, while the number of toxin-forming fungi reduced by 9.4 %. Soybean yield at the combined application of Ecostern biodestructor and carbamide increased by 0.6 t/ha, or 17.9 % compared to the control (carbamide – 30 kg/ha). In addition, in this variant, the content of post-harvest rice residues in the soil at the soybean sowing was lower by 1.25 g/kg of soil, or 20.3 % compared to the control, which created favorable conditions for seed germination. It was observed that the yield increased due to the higher plant density and the number of beans per plant. Before harvesting, the soybean plant density due to the high field germination of seeds in the studied variant was 45 pcs/m2, which is 9.7 % more than the control (41 pcs/m2). The number of beans was 24 and 28 pcs/plant, and exceeded the control by 16.7 %; the thousand grain weight was 156.2 and 157.5 g which is more than the control by 0.8 %. Key words: post-harvest residues, microorganisms, fertilizers, soil, rice, soybeans, grain yield, thou-sand grains weight.

The article analyzes the value of the studied crops for the Steppe zone of Ukraine, their total water consumption during the growing years under the influence of nutritional optimization by using biologics. The main attention is paid to the peculiarities of moisture consumption of winter and sunflower barley plants for the formation of the crop unit and changes in this indicator under the influence of resource-saving nutrition.It has been established that regardless of the weather conditions of the growing years, the use of modern biologics for extracurricular feeding during the main periods of vegetation of both crops, contributes to a more economical use by plants of soil moisture and precipitation that fell during vegetation. Thus, the coefficient of water consumption of winter barley, depending on varietal features, the year of cultivation and the food option, decreases from 10,8 to 30,1%, and sunflower from 39,4 to 44,2% compared to inconvenient control.Key words: winter barley, sunflower, total water consumption, weather and climatic conditions, water consumption coefficient, biologics, nutritional optimization.