Influence of limestone ameliorants and fertilizers on the winter wheat productivity in crop rotation

The influence of mineral fertilizer (N120P60K90) with sulfur addition, and foliar dressing by micronutrients, various doses, and types of limestone ameliorants on the formation of the morphological structure and the productivity of winter wheat was shown. The aim of the research was to establish the regularities of various forms and doses of chemical ameliorants in combination with mineral fertilizers influence on the yield of winter wheat on soddy-podzolic soil in the conditions of the West Polyssia. The application of ameliorants on the background of fertilization increased the indicators of the yield structure and plants survival. The highest results were obtained by using 1,5 and 1,0 doses dolomite flour (determined by the hydrolytic acidity) in complex with S40 and foliar dressing with microfertilizer. The obtained results were ear length – 9,0 and 9,2 cm, number of grains in an ear – 41,1 and 41,4 pcs. The mass of 1000 grains were respectively 43,8 and 43,7 g. The death of plants during the vegetation season from germination to harvesting was low – 18,2 and 19,0 %. It was founded that among the studied various doses and forms of limestone ameliorants on the background of N120P60K90, the application of 1,5 doses of dolomite flour contributed to increase pHKCl by 1,93 units (initial data pHKCl 4,47) and to grow up the winter wheat productivity on soddy-podzolic soil. The highest yield a 3,9 and 4,0 t/ha were ensured by the application of 1,5 doses and 1,0 doses dolomite flour in combination with S40 and microfertilizer on the background of N120P60K90. The yield increase to the control (without fertilizers) was 2,61 and 2,71 t/ha, to the background (N120P60K90) – 1,58 and 1,68 t/ha. The addition of sulfur fertilizers (S40) and two-time foliar feeding with Nutrivant Plus Cereals (2 kg/ha) during the spring tillering phase and stem elongation provided an 8% increase in yield.

Mobilization of Soil Organic Matter by Ultrafresh Water: Modeling and Assessment of the Impact on the Mobility of Heavy Metals

The experiments on mobilization of soil organic matter during soil washing with ultrafresh water against the background of salinity pulsing were designed and performed. Unpolluted soil and the soil artificially polluted with copper(II) were used in experiments, namely, clay loamy typical chernozem (Haplic Chernozem) of the Alekhin Central Chernozemic Nature Reserve (Kursk oblast, Russia; 51°34.207 N, 36°05.444 E) and sandy loamy soddy-podzolic soil (Albic Glossic Retisol (Loamic, Cutanic, Ochric)) from the Domodedovo district of Moscow oblast, Russia (55°17.683 N, 37°50.045 E). Soil samples were taken from the upper humus-accumulative (A1) horizon (5–15 cm). A drastic change in the composition of washing solution from fresh water to 0.1 M NaCl solution and back led to destruction of soil aggregates under the impact of osmotic pressure. Soddy-podzolic soil proved to be more resistant to destruction as compared with typical chernozem. Copper(II) was leached off from artificially contaminated samples of soddy-podzolic soil with the flow of dissolved organic matter, whereas copper leaching from typical chernozem was associated with the destruction of aggregates and release of intraaggregate organic matter. It is argued that copper (II) migration models should take into account the amount of dissolved organic matter for soddy-podzolic soil and the content of aromatic fragments in the organic matter for typical chernozem. A conceptual model of the Cu(II) leaching from contaminated soddy-podzolic soil and typical chernozem in the course of soil washing with fresh water against the background of salinity pulsing and the destruction of soil structure is constructed.

Yield and quality of carrots when using the Gumiton organo-mineral complex in conditions of radioactive contamination

The aim of this work is to assess the impact of Gumiton peat-based organo-mineral complex on the productivity and quality of carrots and the transition of 137Cs from soil to root crops under conditions of radioactive contamination. According to the results of field experiments on gray forest and soddy-podzolic soils of the Kaluga region of Russia, it is shown that leaf treatment with Gumiton of carrot plantings in different phases of crop development increases the yield of root crops by 20-40%, depending on the variety, soil type and agricultural background. Analysis of studies in the growing experiment on soddy-podzolic soil showed that Gumiton treatment increases the yield of carrots by 30%. The rate of decrease of 137Cs content is 1,2-1,25 times. Gumiton is a highly effective preparation for carrots, which increases the productivity and quality of the crop and helps to reduce the intake of 137Cs in root crops in radioactively contaminated areas.

Yield and quality of carrots when using the Gumiton organo-mineral complex in conditions of radioactive contamination

The aim of this work is to assess the impact of Gumiton peat-based organo-mineral complex on the productivity and quality of carrots and the transition of 137Cs from soil to root crops under conditions of radioactive contamination. According to the results of field experiments on gray forest and soddy-podzolic soils of the Kaluga region of Russia, it is shown that leaf treatment with Gumiton of carrot plantings in different phases of crop development increases the yield of root crops by 20-40%, depending on the variety, soil type and agricultural background. Analysis of studies in the growing experiment on soddy-podzolic soil showed that Gumiton treatment increases the yield of carrots by 30%. The rate of decrease of 137Cs content is 1,2-1,25 times. Gumiton is a highly effective preparation for carrots, which increases the productivity and quality of the crop and helps to reduce the intake of 137Cs in root crops in radioactively contaminated areas.

The effect of nanoparticles, multicomponent trace element preperation “Avatar-2 protection”, and microbial preparation “Azogran” on the productivity potato cultivar Suvenir Chernihivskyi in Polesia region conditions

Improvement of conventional methods of potato growing is an important task of modern agriculture. Nowadays nanoparticles (NPs) gain increasing attention of scientists as promising tools for increasing productivity of crop cultures. NPs of such elements as Fe, Zn, B, Si, Cu, Co, Se and Ag can significantly increase potato productivity. Ag NPs show synergic effect with some microbial preparations. However, the influence of such elements as Zn and Se on the productivity of potato and joint application of NPs with microbial preparations for pre-sowing treatment are not studied sufficiently. The influence of Ti and I NPs on potato productivity, the influence of NPs on Ukrainian potato cultivars, the influence of NPs on the potato productivity in Polesia region conditions are not studied yet. The aim of the study was to investigate the influence of pre-sowing treatment of seed potatoes with Zn nanoparticles (NPs), Ti NPs, composition of Se + I NPs, composition of Zn + Ti + Se + I NPs NPs, “Avatar-2 protection” multicomponent trace element preparation, “Azogran” microbial preparation “Azogran” and the combination of “Azogran” preparation with the composition of Se + I NPs on the productivity of potato cultivar Suvenir chernihivskyi in the Polesia region conditions. Two small plot studies were planted for three years in order to conduct the study. Each small plot study had been performed on different soil types: soddy podzolic soil and alkaline chernozem. Studies were situated on the lands of the Institute of Agricultural Microbiology and Agro-industrial Production of National Academy of Agrarian Sciences of Ukraine. It has been found that the composition of Se + I NPs, “Azogran” microbial preparation and the combination “Azogran” preparation with the composition of Se + I NPs had the most prominent influence on the potato productivity, increasing it on soddy podzolic soil by 33.13; 38.34 and 45.35 % respectively and on alkaline chernozem by 10.97; 17.98 and 37.27 % respectively. The composition of Se + I NPs and “Azogran” preparation are shown to develop synergic effect. The results of the study suggest high efficiency of the use of nanoparticles in potato growing.