Chemical protection of potatoes from fungal diseases, taking into account the stability of the variety

In the conditions of the Moscow region in 2019-2022 the effectiveness of funicides of new chemical classes in the potato protection system against rhizoctoniosis, late blight and alternariosis was studied, taking into account the different resistance of varieties (Gulliver, Grant, Sante) to diseases. Potato tubers were treated with the preparation Idikum, SC before planting, its biological effectiveness in reducing the incidence of rhizoctoniosis in the full germination phase was 76.7-95.7 %. It was found that the effectiveness of the preparation depended on the degree of disease development, the stability of the variety and the phase of crop development. In addition, when etching the planting material with Idikum, SC, there was no population of rhizoctosis sclerotia and the spread of dry rot on tubers of the new yield significantly reduced (1.6-5.0 times) compared to the control. The proposed scheme of potato protection in conditions of epiphytotic development of late blight and early blight based on combined chemicals Metaxil, SP, Inside, SC with contact fungicides Raek, CE, Talent, SC, Tirada, SC showed high efficiency in reducing harmfulness of the diseases, which allowed to extend the growing season of plants, to ensure a higher yield of potatoes, its marketability and quality. The use of preparations provided an increase in yield by 36.3-47.5 %, depending on the prevailing weather conditions of the growing season and on the variety in relation to the control (without treatment). It has been established that the biological effectiveness of the protection scheme in reducing the degree of late blight and early blight increased from susceptible to relatively stable varieties and, accordingly, this trend continued with an increase in yield. Higher increases were obtained on unstable varieties Gulliver and Sante (10.6-13.5 t /ha, or 45.7-56.0 %), lower – on the relatively stable variety Grand (7.8 t/ha, or 36.0 %). The contribution of the application of the protection scheme to the overall variation of gross and marketable potato yields was 76.5-81.0 %, gene-type - 7.9-12.5 %, the interaction of these factors – 3.7-4.7 %

Эффективность регулятора роста растений Атоник Плюс на картофеле в условиях Московской области

The results of evaluating the effectiveness of the plant growth regulator Atonic Plus on potatoes as a stimulator of development, immunomodulator and protectant of the negative effects of pesticides in the crop protection system in the agro-climatic conditions of the Central region of the Russian Federation (Moscow region) are presented.In the extreme weather conditions of the growing season of 2010, the growth regulator Atonic Plus effectively demonstrated its qualities in the form of the formation of adaptability and anti-stress resistance in potato plants, providing an increase in yield relative to control by 1.8-7.1% and the quality of tubers is not only compared to the control, but also relative to the reference version. The combined use of a growth regulator with a fungicide contributed to an increase in the yield of standard potatoes in early and mid-late potato varieties by 2-2.5 times compared with the control.Представлены результаты оценки эффективности регулятора роста растений Атоник Плюс на картофеле в качестве стимулятора развития, иммуномодулятора и протектанта негативного действия пестицидов в системе защиты культуры в агроклиматических условиях Центрального региона РФ (Московская область). В экстремальных погодных условиях вегетационного периода 2010 года регулятор роста Атоник Плюс эффективно продемонстрировал свои качества в виде формирования у растений картофеля адаптивности и антистрессовой устойчивости, обеспечив прибавку урожая относительно контроля на 1,8-7,1% и качество клубней не только по сравнению с контролем, но и относительно эталонного варианта. Совместное применение регулятора роста с фунгицидом способствовало повышению урожая стандартного картофеля на раннем и среднепозднем сортах картофеля в 2-2,5 раза по сравнению с контролем