CONTROL OF WEEDS IN AGROCENOSIS OF NUTU

Nowadays no herbicide has been approved for use on chickpea crops has been officially registered in Ukraine. Weed control measures are mainly used. However, many years of experience in the use of a number of herbicides in our country and in other countries. In this regard, the effectiveness and selectivity of soil preparations such as Harnes, 90% k.e., and Frontier Optima, 72% k.e. were studied in chickpea crops. These herbicides were applied after sowing chickpeas until the emergence of seedlings. Application of Harness herbicide, 90% k.e., at a rate of 3.0 l / ha in the soil before the emergence of chickpea seedlings leads to a decrease in weed vegetation a month after application of the herbicide to 88% compared to control areas where measures to protect against storms vegetation was not carried out. The regulation of the number of weeds and their harmful effects in chickpea agrophytocenoses to an economically harmless level is an important condition in the technology of its cultivation. The most relevant weed control is at the beginning of the growing season of the crop, since this the chickpea grows very slowly, is in the rosette phase for a long time, and therefore does not withstand competition from weeds. To increase the yield of chickpea seeds, an important place in the technology of growing crops is the use of herbicides and biological products. Inoculation of chickpea seeds with Rizobofitt at a consumption rate of 1 l / t and with a biofungicidal preparation Biopolycide at a consumption rate of 100 ml/t, by introducing a soil herbicide Frontier Optima, 72% k.e., at a consumption rate of 1,2 l/ha, contribute to the reduction of weeds to 91%, and the ability to obtain the yield of chickpea seeds at the level of 2,12 t/ha.

OPTIMIZATION OF THE SUNFLOWER FERTILIZATION SYSTEM BASED ON THE USE OF MODERN MICROBIOLOGICAL FERTILIZERS

In current conditions of agricultural production with intensive technologies of growing crops, fertilizer is one of the most expensive elements of agricultural machinery, as experienced agricultural experts say that the food system should be optimized. In recent years, biological preparations of various action mechanisms are in increasing demand among farmers. Particular attention is paid to mycorrhizal biopreparations, one of which is "Mykofriend" and preparations based on phosphorus and potassium mobilizing bacteria "Groundfix". Preparations stimulate the development of beneficial soil microorganisms, help preserve and increase soil fertility, activate its suppression against phytopathogens, improve productivity in crop yields, including sunflower. This article presents important aspects of the technology of growing sunflower with a variety of applications of biological origin, which optimize the process of plant nutrition through better use of mineral elements and improve growth processes. New perspective biological preparations, manufactured by BTU Center, for pre-sowing seed treatment and soil application were studied. It was found out that the treatment of seeds with mycorrhizal drug Mycofriend with the rate of 4 l / t and when applying pre-sowing cultivation of biological fertilizer Graunfix at a rate of 8 l / ha contributed to the formation of the best conditions for plant growth and development, and as a consequence of the best productivity parameters. In this variant, the maximum plant height of 189.3 cm, leaf surface area of 30.9 thousand m2 / ha (flowering phase), dry matter yield in the ripening phase of 5.28 t / ha, basket diameter of 23.1 cm, weight of 1000 seeds is 49.6 g and seed yield is 2.84 t / ha.

FORMATION OF PRODUCTIVITY OF SUNFLOWER HYBRIDS DEPENDING ON THE LEVEL OF FERTILIZATION AND HUMIDITY CONDITIONS

Currently, there is a significant gap between the production and consumption of vegetable oils in Ukraine, as a significant part of them is exported to the European Union. Therefore, in order to quantify the comparative performance of different sunflower hybrids under the influence of different moisture conditions and nitrogen fertilizer rates, this study was conducted. The studied variants included three hybrids of sunflower Hysun 33, Hysun 38 and Pioneer-64A93, five rates of nitrogen fertilizers (0, 60, 120, 180, 240 kg of nitrogen per 1 ha ), arranged randomly in quadruplicate. Field research was conducted for two years under three different conditions of moisture (insufficient, unstable and sufficient) in the research areas of Vinnytsia National Agrarian University. The results of the study showed that the productivity of sunflower hybrids varied greatly in response to the application of nitrogen fertilizers and different humidification conditions. The maximum seed yield of 3,177 t / ha was obtained under conditions of sufficient moisture. Among the studied hybrids, the hybrid Hysun 38, surpassed the other two hybrids, providing a yield of 3.083 t / ha and a seed oil content of 41%. There was an increase in the yield of hybrids with increasing rates of nitrogen fertilizers, and the maximum yield was obtained by applying 180 kg / ha of nitrogen in dr. Studies have shown that the yield potential of hybrid Hysun 38 can be fully used by applying nitrogen fertilizers at a rate of 180 kg / ha in conditions of insufficient moisture. Higher nitrogen levels contributed to the significant formation of vegetative mass, thus balancing in favor of reproductive growth. Achieving a yield plateau with 180 kg / ha of nitrogen fertilizers means that an additional dose of nitrogen fertilizers did not contribute to further yield growth. The presence of a strong correlation between the yield of hybrids and nitrogen norms indicates that the yield depends on the presence of a sufficient amount of nitrogen in the soil. The highest yield was obtained by hybrid Hysun 38 - 3,662 t / ha with the introduction of 180 kg / ha of nitrogen. The oil content in the seeds varied significantly depending on different moisture conditions, hybrids and nitrogen fertilizer rates. The maximum oil content of 42.8% was obtained in conditions of sufficient moisture, in conditions of unstable - 40.9% and in conditions of insufficient - 40.4%

EFFECT OF SOWING METHOD AND N APPLICATION ON SEED YIELD AND N USE EFFICIENCY OFWINTER OILSEED RAPE

In the conditions of the Right-Bank Forest-Steppe, the cultivation of winter rapeseed crops after winter wheat usually leads to a delay in sowing the latter and deterioration of autumn plant development. Based on data from a field experiment conducted in 2016/2017, 2017/2018 and 2018/2019, the aim of this study was to investigate how sowing delay affects seed yield, nitrogen uptake by seeds and significant efficiency of nitrogen use by winter rape plants; to check the ability of autumn and spring application of nitrogen fertilizers to compensate for the negative impact of delays in sowing crops; and estimate the minimum autumn development for optimal seed yield. To solve the set tasks, a combination of four sowing dates (from the first week of August to the third week of September) and four autumn nitrogen applications (0, 30, 60 and 90 kg / ha per year) was fixed. In each of these 16 variants, nitrogen application was performed 5 times in the spring (0/0, 40/40, 80/80, 120/120, 140/140 kg / ha, etc.) in order to estimate the individual nitrogen reaction curves. Nitrogen accumulation by aboveground mass of plants in autumn, seed yield and nitrogen uptake by seeds were determined. It was found that sowing the crop after mid-September significantly reduced yields. Application of nitrogen fertilizers in autumn in the amount of at least 30 kg / ha per year increased the yield and absorption of nitrogen seeds without any significant interaction with the sowing period and spring application of nitrogen fertilizers. Increasing the dose of spring fertilizer application to 130 kg / ha increased seed yield. Nitrogen utilization efficiency decreased with increasing application rate when winter oilseed rape plants used nitrogen applied in the fall to a lesser extent than in the spring. In order to achieve high yields, it was necessary for the above-ground mass of plants to absorb nitrogen at the level of at least 10-15 kg / ha at the end of the autumn vegetation. From an ecological point of view, the optimal autumn development of plants should be achieved by choosing an adequate sowing date, rather than using additional nitrogen in autumn.

COMPARATIVE EVALUATION OF BEAN VARIETIES OF COMMON ADAPTABILITY

The varieties of beans that are the least responsive to growing conditions (primarily in terms of moisture supply) by changing the weight of 1000 grains are selected. Coefficient of plasticity (bi <1): UD0302683, UD0302746, UD0302642, UD0303533, UD0302256. These cultivars slightly reduced the weight of 1000 grains due to the deterioration of the moisture supply, ie they are drought-resistant. It should be noted that the varieties that were characterized by the maximum value of grain productivity in quantitative terms, also showed maximum variability in grain productivity over the years of research. These are primarily varieties: UD0300565, the weight of grain from the plant which was 10.6 g, as well as UD0302642, the weight of grain from the plant was 10.5 g, UD0302746 - 11.4 g. - 20%, and UD0302746 - 17%. Therefore, the production needs varieties of common beans that will provide stable and above average yields under adverse growing conditions, and at optimal high levels. Therefore, varieties of common beans were distinguished, which were characterized by lower absolute values in grain productivity and higher stability of the trait during the study period. Such cultivars included UD0303533, whose grain productivity was 8.53 g, and the regression coefficient (bi = 0.81), coefficient of variation (V = 18%), coefficient of agronomic stability (As = 82%); UD0301899 - 7. 88 g, regression coefficient (bi = 0.65), coefficient of variation (V = 15%), coefficient of agronomic stability (As = 85%). That is, these varieties did not respond much to the deterioration or improvement of growing conditions while maintaining stable grain productivity. Given that the coefficient (As) exceeds 70%, the selected varieties of common beans were stable.

ENERGY AND ECONOMIC EFFICIENCY OF MUSCLE GROWTH GROWING IN THE SOUTHERN STEPPE OF UKRAINE UNDER DROP IRRIGATION

In the article technological methods energy and economic evaluation of growing sage in southern steppe of Ukraine conditions have been analysed. The economists’ views on the raw medicinal herbs under drip irrigation formation of efficient production have been considered. The analysis of previous agronomic studies on the cultivation of crops under drip irrigation has allowed us to conclude that there are no such results on the plantations of Salvia sclarea. The yield level of Salvia sclarea inflorescences was stable during the first three years of using, on the average in the first year it was 9.51 t/ha, in the second year it was 9.38 t/ha, in the third year it was 9.69 t/ha. Only in the fourth year of crops using (the fifth year of life) the yield was decreasing sharply. On the basis of yield data, the calculation and analysis of such indicators as energy efficiency, energy intensity of growing 1 kg of inflorescences and the conditional net profit when growing sage in drip irrigation in southern Ukraine. The maximum values of energy efficiency ratio were obtained in the first year of using and sowing in the first decade of December against the background of N60P90 - 3,25 application. When the crops sowing was postponed to the first decade of April, this indicator decreased twice to 1.59. In our experiment the minimum values of energy ratio of Salvia sclarea growing technology were obtained in the fourth year of plantation using. The classical indicators which reflect the economic and energy efficiency level of inflorescences of nutmeg production at long-term use of a culture plantation culture have been analysed. The analysis of the factors which influence for efficiency change of cultivation of culture was carried out. The mechanism of efficiency increase of cultivation of sage nutmeg in the conditions of the southern Steppe of Ukraine has been offered.

VARIETY RESOURCES OF ALFALFA IN THE INTENSIFICATION OF FIELD FEED PRODUCTION

In the soil and climatic conditions of the Right Bank Forest-Steppe, regardless of the action of abiotic and biotic factors during the growing season, high adaptability of alfalfa was established for different geographical origins, namely the natural zone of the Forest-Steppe, Polissya, Steppe Ukraine and Serbia. It was found that under the weather conditions of 2016 year alfalfa varieties reacted differently to changes in temperature and moisture during the growing season. It is important to note the effectiveness of phosphorus-potassium fertilizers applied directly to alfalfa coverless method of sowing. In the year of sowing, alfalfa formed a powerful herbage and provided two slopes with a yield of green mass at the level of 20,13-29,80 t/ha with a dry matter yield of 4,80-6,69 t/ha. For the second year of vegetation, alfalfa was carried out according to the regimes, which considered the phases of growth and development (budding, beginning of flowering and flowering). In the first mode of cutting management (all slopes in the budding phase) it is advisable to identify three varieties of Unitro, Nasoloda and Rosana, which provided a gross dry matter of 10,41-10,48 and 2,29-2,31 t/ha of crude protein. The productivity of alfalfa increased with late term cutting - at the beginning of flowering and a combination of slopes (3rd mode). The dry matter yield was 11,40-12,62 and 2,35-2,51 t/ha of crude protein (second regime) and the indicators increased under the third regime, especially dry matter 13,58-15,80 t/ha and decreased to 2,37-2,41 t/ha of crude protein. The increase in dry matter of the second mode increased by 9,5-23,1% and crude protein by 2,6-20,5%, and in the third mode of use of alfalfa it was 2,3-11,2%, compared to the mode of mowing the grass in the budding phase. During the third year of vegetation under favorable agroecological conditions for growth and development of alfalfa plants, the studied varieties provided four slopes regardless of the mode of use of grass with a dry matter yield of 15,43-20,58 and 3,21-4,02 t/ha of crude protein. During the second and third years of vegetation from the studied modes of use of alfalfa grass for fodder purposes, the highest yield of crude protein 5,27-6,53 t/ha varieties provided for the alienation of crops at the beginning of the flowering phase, which was on average 6,0-7,1% higher than when mowing all slopes in the budding phase and a combination of slopes in the phases of growth and development (3rd mode). Thus, in the conditions of the Forest-Steppe of the right bank on gray forest soils alfalfa, regardless of geographical origin, adapted to growing conditions and provided stable productivity indicators regardless of the regime of grass use with observance of elements of cultivation technology.

PHOTOSYNTHETIC ACTIVITY OF VEGETABLE PEAS DEPENDING ON VARIETY FEATURES, LIMITATION OF SOIL AND NUTRITIONAL SYSTEM

It is known that the growth and development of plants, including vegetable peas, depend on the presence and assimilation of nutrients by plants from the soil and their photosynthesis. With the deterioration of the stages of the process of one of the components changes the passage and functions of the other, which are one whole process of plant nutrition. Conducting the research, on average, during the period of full germination-technical maturity in the control variant with the application of mineral fertilizers N30P60K60, and pre-sowing treatment of seeds with rhizotorphin photosynthetic potential in pea varieties Skinado and Somerwood was 2.039 and 2.254 million m2 / day. While pre-sowing treatment of seeds with microfertilizer Vuxal Extra CoMo against the background of mineral fertilizers N30P60K60 and pre-sowing treatment of seeds with Rhizobophit in pea varieties Skinado and Somerwood compared to the control photosynthetic potential increased by 0.472 and 0.530 million m² di. The maximum indicators of photosynthetic potential in the varieties Skinado - 3,078 and Somerwood - 3,427 million m² days / ha were obtained on the variant of the experiment, where liming was carried out (1.0 norms per hectare) against the background of mineral fertilizers N30P60K60 and pre-sowing seed treatment Rhizobophit and microfertilizer Vuxal Extra CoMo and applied foliar fertilization with microfertilizers Vuxal Microplant during vegetative growth and Vuxal Calcium, Boron during budding. Depending on liming and foliar feeding the increase in dry matter reaches its maximum in the phase of technical maturity This is 1.020 and 1.173 million m² / day more than in the control. In the same variant, the maximum rates of dry matter growth were observed in Skinado varieties - 6.23 and Somerwood - 7.39 t / ha, which is 1.42 and 1.43 t / ha more than in the control.

FEATURES OF APPLICATION OF BIOPREPARATIONS FOR CULTIVATION OF OYSTER MUSHROOMS ON STRAW SUBSTRATE

The world’s population consumes a significant amount of mushrooms each year. Beginners in mushroom growing are considered to be the Chinese, who at the beginning of our era learned to grow different species of basidiomycetes. Today, Ukraine has a significant potential for the development of mushroom growing: there are the necessary raw materials for substrates and still unoccupied premises. Research institutions preserve a unique collection of high-yielding strains, and specialized laboratories produce high-quality seed mycelium. The article is devoted to the study of the influence of biologicals on the productivity of oyster mushrooms of the common strain K-12 during intensive cultivation on a straw substrate. Based on research, it is established that the use of biologicals as an adjunct to the substrate affects the growth processes of the fungus. Biometric indicators of fruit body weight with the use of azotophyte or phytocyde exceeded the indicators of fruit body weight grown on the substrate, where the biological product was not used by 2,0 g, and the diameter of the cap was inferior to 2,0 and 6,0 mm, respectively. Fungi obtained on the substrate without the use of the biological product were characterized by a shorter leg length compared to the variant using azotophyte by 3,0 mm, and exceeded the test value by 4 mm using phytocyde. From the use of azotophyte or phytocide, the diameter of the stem of the fruiting body decreases to 12,0-15,0 mm. Carrying out of timely agrotechnical actions promotes reception of a qualitative harvest of fruit bodies of an oyster mushroom. Before harvesting, the fruiting bodies were characterized by a typical shape and inherent color of the cap and were in technical maturity. The cap of the fruit body did not crack, was not damaged by pests, and its humidity was 65,0-68,0 %. The activity of the bacteria Azotobacter chroococcum and Bacillus subtilis has an effect on the productivity of strain K-12, they stimulate the formation of more primordia. With the use of Azotophyte or Phytocide, the yield increases by 22,0 and 18,0 %. The total yield of oyster mushroom consists of two waves of fruiting. The yield of the first wave of fruiting is 2,3 times higher than the yield of the second wave of fruiting. The use of Azotophyte helps to increase the yield of the first wave of fruiting fungus by 2,2 kg / 100 kg of substrate, and phytocide – by 1,8 kg / 100 kg of substrate. The use of Azotophyte or Phytocyde as an additive to the substrate is economically advantageous: the net profit increases by 32 and 24 %, and the level of profitability - by 1,2-1,1 times, respectively.

INFLUENCE OF THE LEVEL OF WATER MINERALIZATION ON THE CONCENTRATION OF HEAVY METALS IN MUSHROOMS

The current ecological condition of forest plantations has been characterized by high anthropogenic load as a result of population activity. The consequences of the human impact have been manifested in the disturbance of natural landscapes, air pollution, hydrosphere, destruction of the lithosphere, uncontrolled depletion of forest resources, resulting in a decrease and extinction of a huge number of species of animals and plants. In the result of various industries’ work chemical compounds have been formed, which have been transformed into the biosphere and enter all living organisms. Therefore, there are serious problems in the relationship between nature and man. The human impact on the environment is extremely powerful and it is obvious that the biosphere as a result of this impact loses the ability to self-regulate and it does not allow it to function properly. One of the current environmental problems that threatens plants, animals and human health and the quality of the environment is heavy metal pollution. These substances gradually enter plants, animals and humans through the air, water and food chain over a period of time [4]. Toxicity of metals has a direct effect on flora, which is an integral part of ecosystems. These effects lead to changes in the biochemical, physiological and metabolic processes that take place in plants that grow directly in areas with high levels of heavy metals. Samples of edible forest mushrooms were taken on the territory of forests of Tyvriv, Vinnytsia and Kalyniv districts in the Forest-Steppe of the Right Bank of Ukraine. Studies of the concentration of heavy metals were performed in the research and measurement agrochemical laboratory of the Department of Ecology and Environmental Protection, Faculty of Agronomy and Forestry on the basis of Vinnytsia National Agrarian University. The concentrations of Cu, Zn, Pb and Cd of the studied fungi were determined by atomic absorption spectrometry after dry mineralization. Studies of the effect of cooking on the concentration of heavy metals in mushrooms were carried out according to the following scheme: 1. control option: mushrooms, cleaned and washed with tap water; 2. option 1: mushrooms soaked for 3 hours in water without mineral residue; 3. mushrooms soaked for 3 hours in water without mineral residue with the addition of salt (1 kg of mushrooms – 1 liter of water and 10 g of salt). The effect of soaking mushrooms in water without mineral residue with the addition of salt was studied. It was found that when soaking mushrooms for 3 hours in water without mineral residue, the concentration of zinc in them decreased: from 1.02 to 1.37 times; copper - from 1.14 to 1.5 times; lead - from 1.09 to 1.13 times; cadmium - from 1.3 to 1.5 times. When soaking mushrooms for 3 hours in water without mineral residue with the addition of salt, the concentration of zinc in them decreased: from 1.23 to 1.28 times; copper - from 1.2 to 1.36 times; lead - from 1.31 to 1.38 times; cadmium - from 1.41 to 1.6 times.