Safflower production is actual in climatic conditions of the Western Kazakhstan, which is characterized with high heat supply and long vegetative period. In recent years, safflower crops in the Western Kazakhstan region did not exceed 29,000 ha and seed yield was quite low – 0.3–0.5 t per ha. Studying of biologized technologies of safflower cultivation is very important for crop productivity increase and sowing areas expanse. Next to the introduction of the highly productive varieties, perfection of agricultural techniques, especially application of biologic preparations, is a significant reserve of safflower yield increase in a system of organic farming. The purpose of the research was to study and estimate biologized technology of safflower cultivation in the Western Kazakhstan to supply producers with qualitative oil materials in a system of diversified plant growing. The researches were conducted in 2019–2020; we studied features of crop growth, development, productivity and seed quality when cultivating safflower with biologized technology in conditions of the first dry steppe zone of the Western Kazakhstan region. Due to results of comparative studying, seed yield and oil content in seeds of safflower were higher: 0.764 t per ha and 30.0%, respectively, when using biologized technology. The highest oil yield (0.229 t per ha) was received at joint application of a biopreparation Biodux, a biofungicide Orgamica S and a biofertilizers Organit N, Organit P (biologized technology) for seed disinfection and plants treatment during safflower vegetation, that was by 0.057 t per ha, or by 33.1%, higher than at traditional cultivation technology.

Sunflower cultivation is very important today in climatic conditions of the Western Kazakhstan which are characterized with high heat supply and prolonged vegetative period. Over the last years, sunflower crops in the Western Kazakhstan region exceed 40 thousand ha; however, seeds yield is still low (0.75-1.05 t per ha). So

Diseases are one of the main factors limiting the receiving of high yields of soybean. The use of biopreparations for plant protection will result in successful disease control and improve the quality of products. In 2018-2020, at V.S. Pustovoit All-Russian Research Institute of Oil Crops (Krasnodar), we studied the application effectiveness of biopreparations under the trademarks of BSka-3 with the active ingredients Trichoderma veride, Pseudomonas koreensis, Bacillus subtilis and BFTIM with the active ingredient Bacillus amyloliquefaciens against soybean diseases. We applied organic fungicides for seed treatment and on vegetative plants at the budding stage. The variants BSka-3 G + BFTIM G (62 %) and BSka-3 Zh + BFTIM Zh (50 %) showed the highest biological effectiveness against purple Cercospora blight, and the variant BSka-3 E + BFTIM E showed 66 % and 52 % of effectiveness against pustular and angular spot diseases. The biological effectiveness of Pyraclostrobin, EC against purple Cercospora blight, pustular and angular spot diseases was the lowest – 21, 12, and 10 %, respectively. We observed the best economic efficiency in case of application of BSka-3 E + BFTIM G – 2.31 t/ha.

The work is aimed at the development of application methods of graminicides and anti-dicotyledonous herbicides on oil flax in the area of unstable moistening of the south of Russia. The application of preparations against dicotyledonous weeds Tifi, Sekator Turbo or Magnum, followed by the treatment of sowings with Miura graminicide, contributed to obtaining an increase in yield of 0.14, 0.12, and 0.11 t/ha, respectively, in comparison to the untreated sowings. We observed an increase in crop yield by 0.09-0.12 t/ha with the application of anti-dicotyledonous herbicide Cleo and graminicide Miura, regardless of their application method. The tank mixtures Tifi + Miura and Magnum + Miura had a phytotoxic effect on oil flax, which, in comparison to the control, led to a decrease in yield by 0.04 and 0.09 t/ha and in oil content of seeds by 1.1 and 0.8%, respectively.

Potential seed yield of the modern oil flax varieties is equal to 2.5–3.0 t per ha, and its real meanings in 2019 in average in Russia was 0.83 t per ha, in the Southern federal region – 0.77 t per ha. One of the reasons of such low productivity of the crop is poorly effective measures of weed control. We studied the methods of herbicides application to select the most effective ones in 2019–2020 in a zone of unstable moistening (Krasnodar) on leached black soil and in a zone of insufficient moistening of the south of Russia (Oporny settl., Rostov region) on typical black soil in sowings of oil flax varieties FLIZ and Raduga bred at VNIIMK. We established the best way of a chemical plant protection of oil flax against weeds is a separate application of the herbicides Secator Turbo, MD (0.1 I per ha) and Miura, EC (1.2 l per ha). This variant did not demonstrate a negative effect of preparations on the crop and caused yield increase up to 0.20 t per ha. Also the high flax productivity, at the level of control variant with hand weeding of crops, were stated under separate application of the herbicides Magnum and Miura, Tifi and Miura. We recommended using these methods of herbicides application in zones of unstable and insufficient moistening of the south of Russia. We do not recommend to treat the crops with the herbicide Tifi after before-soeing application of Frontier Optima or Dual Gold and with tank mixture Magnum + Miura, Tifi + Miura, Secator Turbo + Miura due to their phytotoxic impact on the crop and negative effect on the indicators of plant productivity.