The results of the study of collection oat samples of various ecological and geographical origin are presented. The experiments were carried out in Novosibirsk region in 1994-2018. The sources that combine the optimal density of the productive plant stand and the mass of grain from the panicle were identified according to the ripeness groups. There were 413 collection samples of spring oats studied from 42 countries of the world for 25 years. Collection varieties were evaluated in nurseries of the 2nd-3d year of study. To identify the best samples, a scoring evaluation system of the traits under consideration, i.e. the density of the productive plant stand and the mass of grain from the panicle, was used. Comparison of genotypes for these traits was carried out within a group of varieties with an equal score for the duration of the seedlings -wax ripeness period. The standard varieties Krasnoobsky and Rovesnik were studied for all 25 years, therefore, all years were divided into three groups according to the average biological yield of these varieties. The first group includes 5 years, in which the standard varieties formed a low yield - less than 300 g/m². The second group includes 14 years with a standard yield of 300-600 g/m². The third group includes 5 years with the most favorable conditions for the formation of a high biological yield - more than 600 g/m². A significant correlation between biological productivity and panicle productivity was noted in the standard variety Krasnoobsky during the years with a medium yield and in the standard variety Rovesnik during the years with a high yield. With the traits being evaluated in points, biological productivity showed a strong positive correlation with panicle productivity in Krasnoobsky variety in all groups of years, and in Rovesnik variety only in groups of years with medium and high yield. The sources of biological productivity of oats were identified by ripeness groups: very early - VIR-14522 (Dukat, Poland); early-ripening - VIR-14223 (Ardo KR-FPTS, Czechoslovakia); mid-early - VIR-15340 (Uran, Omsk region), VIR-14729 (SG-K-93682, the Czech Republic), VIR-14588 (Gramena, Germany), VIR-14582 (Carl Theodor, Germany), VIR-15012 (Togurchanin, Tomsk region), VIR-14706 (Keeper, Great Britain), VIR-14581 (Borka, Germany), VIR-15178 (Begunok, Ulyanovsk region) and Novosibirsky 5 (Novosibirsk region); mid-ripening - VIR-14377 (Mutika 572, Omsk region), VIR-14520 (Kwant, Poland), VIR-15254 (AC Mustang, Canada), VIR-15280 (55h 2106, Moscow region) and VIR-14527 (OM 1385, Great Britain); medium-late - VIR-15065 (Irtysh 22, Omsk region), VIR-14860 (Malysh, Tyumen region) and VIR-15103 (R8N9 3037-3072, Krasnoyarsk region).

The results of the study of promising potato varieties in Novosibirsk region (2016-2018) are presented. The objects of the study were 14 samples of potatoes, 10 of them were modern domestic varieties not zoned in the West Siberian region. An assessment of the quality indicators of potato varieties was carried out in comparison with the following zoned varieties: Red Scarlett, Nevsky and Tuleevsky. To obtain an early harvest (75 days after planting), the varieties Lomonosovsky (36 t/ha) and Reggi (39 t/ha) were recommended for the early ripening group. In the group of mid-early varieties, the variety Samba (35 t/ha) was noted; in the mid-season group, the varieties Fritella and Vympel were distinguished (early yield 32 t/ha). High productivity during harvesting in the early ripening group was noted in the varieties Lomonosovsky (42 t/ha) and Reggi (44 t/ha). The Samba variety (44 t/ha) stood out in the mid-early ripeness group. In the mid-season ripening group, the recommended variety is Gusar (46 t/ha), which exceeded the Tuleevsky standard by 4 t/ ha. Among the varieties of the early group of ripeness, high starch content was noted in the varieties Lomonosovsky (16.3%) and Reggae (17.4%). In the mid-early and mid-season groups, one variety was distinguished in each, Samba (14.4%) and Fritella (17.0%). In the early ripening group, the dry matter content of all varieties was higher than that of the Red Scarlett standard, in the mid-early group the highest indicator was observed in the Samba variety (22.9%). In the group of mid-season varieties, the samples Vympel (25.4%) and Fritella (25.8%) exceeded the standard. High field resistance to late blight (9 points) in the epiphytotic year (2017) was revealed in the varieties Gala, Nevsky, Gusar and Fritella.

The results of laboratory and field studies of the effectiveness of the Tirada SK disinfectant (suspension concentrate) against anthracnose seed infection and other lupine diseases are presented.

The work was carried out in 2018-2020 in the Bryansk region. The object of study is the seeds, seedlings and crops of the Vityaz narrow-leafed lupin. In laboratory conditions, the effectiveness of the Tirada SK disinfectant (tiram 400 g / l + difenoconazole 30 g / l) was studied in three application doses (1.0; 1.5; 2.0 l / t). The biological effectiveness was evaluated by the number of infested seedlings grown in paper-polyethylene rolls compared to the control (without dressing). High biological effectiveness (100%) against anthracnose was shown by doses of 1.5 and 2.0 l / t. The highest overall germination (99.6%) and the number of seeds with strong seedlings (90.4%) were noted in the variant with a dose of 1.5 l / t. At the same time, the length of roots and hypocotyl of seedlings increased significantly (LSD05 = 0.69 and LSD05 = 0.51) by 18.0 and 1.0%, respectively. The field experiment was carried out in four repetitions, the plot area was 34 m². The seeding rate was 1.2 1.2 million viable seeds / ha. The soil of the plot is grey forest with the humus content of 2.7%. The predecessor is spring sown cereals. Seed dressing with Tirada disinfectant at a consumption rate of 1.5 l / t was applied one month before sowing. The effectiveness of the disinfectant was evaluated in comparison with the control. The average biological effectiveness of the disinfectant against anthracnose infection was 94.3%. By the shiny pod phase, the number of affected pods was 5.7%, compared to 26.4% in the control. Plant infestation by Fusarium (Fusarium spp.) was reduced from 18.7% in the control to 11.8% in the experiment and by Rhizoctonia (Rhizoctonia solani Kuhn.) from 9.8% to 2.8%. The spread of grey rot and white rot on pods has been reduced by a factor of 2.4 and 2.8, respectively. The seed germination increased significantly (LSD05 = 0.71) by 8.1% and the safety of productive plants at harvest increased by 35.3%. A significant (LSD05 = 0.041) increase in seed yield was 0.82 t/ha, with a cost recovery of 7.15 rubles.

The results of the study of toxicity level for the lamb's quarters (Chenopodium album L.) of well-known herbicides used in soybean crops as well as herbicides promising for soybean production in the Far East are presented. Lamb's quarters (Chenopodium album L.) is a highly noxious weed species that is widespread in the south of the region. Weediness monitoring conducted in 2006-2020 showed that this species was present in the Primorsky Territory on 63-100% of fields occupied by soybeans with an average growth density of 3-117 pcs/m². In 2013-2020 in a series of experiments, conducted in the conditions of the vegetation house and on the experimental fields of the institute, the toxicity level for Common lamb's quarters was determined by 20 herbicides (based on 14 active substances) used in soybean crops. It was found that the control of this weed species is most effective when applying herbicides in the soil and treating plants with a height of up to 4-11 cm at the early stages of development - 1-3 pairs of leaves. Reliable suppression of lamb's quarters in experiments was provided by the soil (before sowing or before soybean seedlings) use of herbicides containing active substances metribuzin, imazetapir, trifluralin, pendimetalin and acetochlor. Among the active ingredients of the tested foliar herbicides, fomesafen, combinations of bentazone + acifluorfen and imazamox + chlorimuron-ethyl were the most toxic for lamb's quarters. It is recommended to use the following herbicidal preparations to control the spread of lamb's quarters: before sowing or sprouting of soybeans - Lazurit, Zenkor Ultra, Pivot, Proponit, Fabian; for processing vegetative plants - Flex, Galaksi Top, Concept, Classic Forte (Harmony Classic), Proponit.

The total influence of external environmental factors by seasons on the spatial structure and motor activity of herd horses of Zabaikalsky breed with year-round grazing was studied. The scientific and economic research was carried out in Trans-Baikal Territory. Grazing of 10 herds of horses (20-27 heads) was carried out on the area of 301.5 km2 at different distances from each other. The distance from the horse-breeding camp was 2300-7900 m. According to the motor activity assessment of horses in the spring and summer seasons during 14 hours of grazing, the average speed was 1.4 and 1.1 km/h, the distance traveled was 16828 and 14827 m. The average air temperature during these periods was 10.4 and 12.2 °С, average air velocity was 4.5 and 2.1 m/s, average relative air humidity was 32.2 and 53.3%. In the autumn period, during 10 hours of grazing, the distance was 13879 ± 195.7 m at a horse speed of 1.2 ± 0.07 km/h, average air temperature of minus 1.1 °C, air speed of 2.3 m/s, and air humidity of 54.4%. In winter, the grazing time was 8 hours, the horses in the experiment covered the distance of 12190 ± 142.3 m at a speed of 1.8 ± 0.03 km/h with an average temperature of minus 24.7 °C, wind speed of 1.5 m/s and relative humidity of 64.7%. In the spring, the horses covered the distance greater than in summer, by 13.5% (p < 0.01), in autumn - by 21.2% (p < 0.001) and in winter - by 38.0% (p < 0.001). The highest nutritional value of pasture herbage was noted in the summer (0.60 feed units/kg of dry weight, 102.3 g of digestible protein/ feed unit). In the spring, the nutritional value of pasture grass was 0.35 feed units/kg of dry weight with 31.5 g of digestible protein.

The influence of breed and storage period of hatching eggs on the duration and results of incubation and the development of quail was studied. It has been noted that in breeding quail farms, the collection period for hatching eggs can be as long as 2-3 weeks. Storage time has a negative effect on incubation time, embryo development, egg hatchability and hatchability of young chicks, which consequently reduces the economic efficiency of the poultry farm. The study was carried out on the eggs of the Pharaoh and Texas White quail breeds. It was found that storage of quail eggs for more than 7 days reduces the hatchability of eggs by 8.3-38.2% and the hatchability of young quail eggs by 15.7-41.4%. Reduced fertilization of eggs correlated with the loss of egg weight during storage (r = 0.974-0.995, p < 0.05). Extending the shelf life of quail eggs to 14-21 days increased the average incubation hour of the Pharaoh breed by 6.3-12.1 hours, and the Texas white breed by 2.5-9.7 hours, had a significant effect during the embryogenesis period on the live weight of day-old quails of both breeds, utilization of yolk sac nutrients and development of the heart, liver and gizzard (η² = 0.541-0.902, p <0.05-0.01). Hatchery eggs of the meat quail breeds Pharaoh and Texan White should be stored for no more than 7 days before incubation. The results of this study can be used in breeding, industrial and farm quail farms for planning sampling times, the number of eggs laid for incubation and places for planting day-old chicks, the number of future layers, the amount of feed needed; in the educational process of agrarian educational institutions.

The results of studies on the effect of the birth season factor on the lifetime productivity and growth rate of cows are presented. The material for the research was the information database of the "Selex" breeding record program for the highly productive herd of black-motley cattle of the "Pre-Baikal type". The research was carried out under the conditions of the Irkutsk region in 20152019. Replacement heifers, which were evaluated for growth and development, and subsequently for milk production during the 1st and 3rd lactations and lifetime production, were chosen as an object of research. Heifers born in the summer-autumn period, according to the 1st lactation, gave the highest productivity, their milk yield was 6151-6179 kg of milk with a fat content of 3.85%. By the 3rd lactation, cows born in the summer months retained high productivity (7001 kg with a milk fat content of 3.83%). From the cows born in winter, a maximum lifetime production of 30,519 kg was obtained. The cows born in spring have 856 kg less lifetime productivity. With the maximum lifelong productivity, the age in lactations was 4.5, with the minimum - 4.0. This indicates that the shorter the period of productive use, the lower the lifetime milk yield of cows. The cows that gave the highest milk production in the first lactations dropped out of the herd sooner for various reasons, thereby not having reached their full genetic potential and not having shown their possible maximum milk production.

The analysis of the epizootic situation of cattle leukemia in the Siberian Federal District as a whole and in individual regions of the district is given. The study was carried out in the Republics of Altai, Tuva and Khakassia, in the Altai and Krasnoyarsk Territories and in five regions: Irkutsk, Kemerovo, Novosibirsk, Omsk and Tomsk. The materials of diagnostic studies obtained by veterinary specialists of the Siberian Federal District for 2017-2019 are presented. This information has been analyzed and summarized both for the Siberian Federal District as a whole and for its individual constituent entities. Studies show the spread of bovine leukemia virus infection in the whole district. A tense epizootic situation with cattle leukemia was noted, since the Siberian Federal District ranks second in Russia in terms of the number of adverse locations (322). However, compared to 2017, the number of adverse locations in 2019 decreased by 57, sick animals - by 977 heads, infected animals - by 70836 heads. The number of adverse locations has decreased slightly, while the number of infected animals in some regions has increased. As of January 1, 2020, no hematologically sick animals were found in the Republics of Altai, Khakassia, Buryatia and Tuva, but the number of animals infected with BLV increased. The experience of individual regions of the country that are free from BLV infection (Sverdlovsk, Vologda, Leningrad, Murmansk, Arkhangelsk, Kostroma, Kirov regions, Khanty-Mansi Autonomous District, etc.) shows that bovine leukemia is an infection that can be controlled. It is possible to eliminate the disease in herds of cattle with any level of BLV infection as a result of carrying out complex health-improving measures, as well as organizational and veterinary-sanitary measures with the obligatory removal of sick and BLV infected animals from the herd.

The results of research into the ecology of pathogens of infectious diseases in permafrost conditions are presented. The work was carried out in laboratory conditions and horse breeding farms of the Republic of Sakha (Yakutia), located in the permafrost zone. Isolation and identification of pathogenic and conditionally pathogenic microorganisms were carried out by generally accepted methods used in microbiological practice. The survival rate of microorganisms was studied by methods of veterinary sanitation. The studies conducted showed that the survival time of some microorganisms on the objects of the environment in permafrost conditions is 2-3 times longer than the survival time of similar microorganisms in the southern and European territories of Russia and abroad. When studying microbial contamination and the survival time of microorganisms, a significant content of aerobic spore-forming bacteria (more than 2 x 10⁶ CFU/g) in permafrost soils of Central Yakutia was established. Isolation of viable bacteria of the genus Bacillus from representatives of mammoth fauna preserved in permafrost soils (age 30-40 thousand years) proves the role of permafrost in the preservation of bacteria of the Pleistocene period. Permafrost contributes to the long-term preservation of foci and transmission factors of pathogens of infectious diseases. Isolation of pathogens of yersiniosis from the surfaces of glaciers and from wild animals indicates the danger of contamination of food during storage and consumption. The establishment of the circulation of pathogens of viral diseases among reindeer suggests the role of migratory birds in the spread of infectious diseases. The study of the epizootology of anthrax remains relevant. Knowledge of the survival time of microorganisms on the objects of the environment in the extreme conditions of the Far North and the study of the microbiota of wild animals and migratory birds are necessary to optimize antiepizootic and epidemiological measures in the prevention or elimination of infectious diseases in humans and animals.

The dynamics and features of animal rabies manifestation on the territory of the Republic of Tuva have been studied. In the Republic of Tuva in the period of 1979-2019 outbreaks of rabies were reported in 1979, 1987, 2007-2009, 2012-2014, 2018-2019. There were 79 adverse locations revealed with 127 laboratory confirmed cases of rabies of four species of wild animals, two domestic carnivores and four agricultural animals. For the first time the cause of the outbreak of rabies was the introduction of infection by wild carnivores from adverse neighboring regions and Mongolia. Subsequently, a natural focus of rabies developed on the territory of the region. The epidemic process of rabies proceeded with five waves of intensity exacerbation, which was facilitated by a sharp increase in the population of wild carnivores, especially wolves, as well as an uncontrolled population of stray dogs with the involvement of domestic and farm animals in the epizootic process. The spread of the disease is influenced by the natural and climatic conditions of the region, the traditional distant pasture management of livestock with the movement of livestock to pastures adjacent to the habitat of wild predators. Domestic and farm animals are attacked by predators, most often wolves and foxes. Infection of animals and humans with rabies occurs through bites with saliva. As a result, rabies foci appear in these areas. Zones of high and low degree of epizootic danger and zones free from rabies have been identified on the territory of the Republic of Tuva. The high-risk areas include the steppe and semi-desert territories of the Ubsu-Nur and Tuva depressions. The mountain-taiga Todzhinsky and Tere-Kholsky regions of the eastern zone are classified as areas of low epizootic danger; Pii-Khem and Kaa-Khem regions of the Yenisei basin of the central zone are classified as rabies-free.

The existing work on the choice of technologies and technical means, implemented in the form of software, is considered. The factors that must be taken into account when choosing agricultural technologies are shown: phytosanitary, soil-climatic and natural conditions, optimal terms of work, effective schemes for the use of fertilizers and protection means, the choice of machine complexes depending on natural conditions (field sizes), as well as costs for execution of the entire complex of works. An algorithm of the web-based software complex "STAMAT" is presented for the selection of agricultural technologies and technical means of crop production, taking into account the peculiarities of the location and production conditions of the farm. A graphical method for representing the algorithm in the form of a diagram is used. This method makes it possible to represent a multilevel hierarchical scheme of interaction between the data of the subject area described. Functions reflecting the algorithm developed are shown. Several blocks have been highlighted, which in the software package will represent separate software modules with a common database and a common interface: “User authentication”, “Database editor”, “Choice of technology”, “Choice of equipment”, “Reports”. The description of the blocks and the functions they implement is given. Based on the results of work of the program module “Choice of technologies”, several options for technologies are formed, as well as flow charts for the production of crops with an indication of the necessary technological operations, the timing of their implementation and a list of equipment required to perform a given amount of work in the optimal agrotechnical terms. The result of work of the module “Choice of equipment” is selection of the optimal composition of the machine and tractor fleet required to perform one technology from a number of calculated options.