Year 2019, Volume 65, Issue 4

Year : 2019
Volume : 65
Issue : 4
   
Authors : Andrey SHALIMOV, Alexander MAKSIMOV, Alexey ISAEVICH, Konstantin KORLYAKOV
Title : THE SUPPRESSION OF POTATO PATHOGENS DEVELOPMENT DURING STORAGE PERIOD AS INFLUENCED BY AIR MEDIUM, CONTACTING WITH NATURAL POTASSIUM SALTS
Abstract : One of the urgent problems of agricultural production is preservation of the grown yield, minimizing storage losses, which can reach 30-50 percent. The ways to solve this problem are observed in given article. The analysis of existing methods of products storage based on modern technologies is fulfilled. Using of unique properties of natural potassium salts is admitted to be one of promising technologies for potato and root crops storage. The research program has been launched in Perm Federal Research Center of UB RAS to develop new technologies for storage and fertilizing seed potato based on the properties of natural potassium salts and waste products from K-Mg ores. Natural potassium-magnesium salts have a number of specific properties affecting the air medium. One of these properties is the ability to produce light air ions due to air molecules contact with potassium and sodium cations. Such environment has the ability to inhibit the growth of many microorganisms’ types, including pathogens, which is used in world practice to treat some chronic human diseases (speleotherapy). Preliminary studies conducted in used drifts of K-Mg ores deposits showed the possibility of storing potato and vegetables in underground storages. The next task is to simulate the conditions of underground drifts in typical potato storages. The most promising variations are lining the storage facilities with sylvinite tiles and aerosol treatment as a result of passing an air stream through a layer of sylvinite and the subsequent infiltration of the aerosol through the potato mass. The identification of potato pathogens in samples from the harvest of 2016 and 2017 was carried out after the main storage period. The most common diseases were fusarium, phomosis, as well as bacterial wet rot, late blight presence was insignificant. The number of infected tubers was 10.2 percent of the studied quantity. The primary modeling of storage conditions under the influence of air ions in a special climatic chamber was carried out. The influence of saline saturated atmosphere on the growth of phytopathogens isolated cultures with growth inhibition assessment was determined. For this purpose phytopathogens cultures planted on potato agar bouillon were placed in sealed chambers with volume 5.28 liters. According to the results of fulfilled studies, the number of microorganisms colonies decreased by 13-63 percent compared with the control. A system of equations has been developed that can be used to determine the optimal concentration of potassium aerosol in potato storages to achieve the best preservation of products. After fulfillment of research work in typical storages equipped with plenum ventilation system, a technology for potato storage, based on the creation of favorable air environment saturated with light negative air ions and saline aerosol, will be developed
For citation : Shalimov, A., Maksimov, A., Isaevich, A., Korlyakov, K. (2019): The suppression of potato pathogens development during storage period as influenced by air medium, contacting with natural potassium salts. Agriculture and Forestry, 65 (4): 55-66. DOI:10.17707/AgricultForest.65.4.06
Keywords : potato storage, K-Mg ores, potassium salts, air ions, saline aerosol, potato pathogens
   
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ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

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