The effectiveness of a new biological product Spud on the basis of Bacillus subtilis in the cultivation of potatoes

The article presents research materials on the widespread use of multifunctional biological products against fungal and bacterial pathogens on the main vegetable crops cultivated in greenhouses and on potatoes. For protected ground crops: cucumber, tomato, eggplant, protection systems have been developed that help protect plants from diseases during the entire growing season. The introduction of these systems into production makes it possible to completely reduce or minimize the use of chemical plant protection products on these crops and thereby reduce the negative impact on the environment, as well as improve the quality and safety of crop products. The article presents the main biological products that are included in the potato protection system, including Kartofin, SK and Sternifag, SP.

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Biological Products for Integrated Protection Systems for Greenhouse Vegetables and Ware Potatoes

Lysov

Morozov

Naumova

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Pre-planting treatment of potato tubers with biopreparations in conditions of Central Yakutia

Sleptsova,

Neustroev

2023

Sib. vestn. s-h. nauki

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The results of the study of the influence of pre-planting treatment of tubers with biopreparations based on Bacillus subtilis bacterial strains on the growth, photosynthetic activity of plants, disease damage and yield of the Yakutyanka potato variety under the conditions of Central Yakutia are presented. The experiment scheme included control (tubers without treatment), treatment of the tubers before planting with the biofungicide Phytosporin-M and the suspension of an equal ratio of B. subtilis TNP-3 and B. subtilis TNP-5 bacterial strains isolated from permafrost soils of Yakutia. It was found that treatment of tubers before planting with biopreparations accelerated sprouting by 2-4 days, increased biomass and photosynthetic activity of the plants (by 6-19%), the number (11) and weight (48–57%) of tubers, reduced the damage of the plants by a complex of diseases by 1.8–2.9 times and increased the yield by 7.4–8.8 t/ha (54–64%). The share of biopreparation influence in the variability of economically valuable indicators and yield was shown to be 45–96%, weather conditions 1–38%, factor interaction 1–11%. Significant positive correlation of the yield, number and weight of the tubers with the height, number and weight of the plants, leaf area, photosynthetic potential (r = 0.81...0.98), and negative correlation with rhizoctonia disease, potato scab, and common mosaic (r = –0.80...–0.96) were revealed. There was an inverse relationship between disease prevalence and indices of plant growth and photosynthetic activity (r = –0.33...–0.96). Damage by potato scab and rhizoctonia disease increases 1.4–1.8 times in arid conditions, while blackleg, rugose and common mosaic damage decreases 1.6–2.5 times. Regression equations were calculated, which allow to predict leaf area, photosynthetic potential and yield by plant mass promptly and with high accuracy (R2 = 0.85...0.95). When the bush weight in the flowering phase increased by 100 g, the leaf area of the plants increased by 2.3 thousand m2/ha, photosynthetic potential during the growing season by 120 thousand m2 · day/ha, and the yield by 9.7 t/ha. The difference between actual and calculated values amounted to 2.7–4.7%.

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The use of promising biological products for the potato plant in the North Caucasus

Gerieva¹,

Gazdanova²

2021

Agrarian Bulletin of The

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Abstract. The quality of the crop is of great importance for increasing the profitability of potato production. According to the creators of the variety, when laying high-quality tubers and observing storage conditions, the quality indicator ranges from 85 % to 99 %. This is especially important for seed potatoes. According to the requirements for the quality of seeds, the presence of tubers affected by late blight is allowed up to – 2 %, and with scab and rhizoctonia – up to 5 %. The main objectives of the long-term storage technology are to ensure high initial quality and minimize potato losses. The purpose of the work is to identify the effectiveness of the use of biological products “Kartofin”, “BisolbiSan”, “Rizoplan”, “Zerebra Agro” in the cultivation of potatoes in the conditions of the foothill zone of the North Caucasus, the effect on biometric indicators, productivity, morbidity and quality indicators of tubers. The novelty lies in the fact that for the first time in the agro-ecological conditions of the North Caucasus, the effectiveness of the use of biological products of a new generation has been studied. Methods. The counts and observations were carried out according to the generally accepted methods described in the “Educational and methodological guidelines for conducting research in agronomy”. Results. The use of biological products of a new generation in the conditions of the foothill zone of the North Caucasus reduces the passage of the phenological phases of potatoes. Pre-planting treatment of tubers contributed to obtaining earlier shoots on day 16 compared to the control by 7.7; 9.1; 18.3; and 19 %. Biological products and fungicides increased the height of the potato bush by 5.5; 6.9; 19.1; 21.5 cm compared to control. The studied biological products have not only growth-regulating properties, but also increase resistance to late blight. The counts of the total yield showed that on the Udacha variety, all the studied biological products have a positive effect on the yield indicators in comparison with the control. But the highest yield indicators were noted on the option of using the biological product “Zerebra Agro” – 29.3 t/ha, while in the control it was 24.3 t/ha.

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The effectiveness of a new biological product Spud on the basis of Bacillus subtilis in the cultivation of potatoes

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Biological Products for Integrated Protection Systems for Greenhouse Vegetables and Ware Potatoes

Biological Products for Integrated Protection Systems for Greenhouse Vegetables and Ware Potatoes

Pre-planting treatment of potato tubers with biopreparations in conditions of Central Yakutia

The use of promising biological products for the potato plant in the North Caucasus

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