In modern conditions of unprecedented challenges, an alternative to the technological degradation of fertilizer application systems can be the development of original forms of long-acting fertilizers. Despite significant progress in the adaptation of progressive systems of agrochemical impacts, the use of traditional forms of mineral fertilizers does not allow using the full potential of the introduced nutrients, since the processes of incomplete denitrification, immobilization and leaching (leaching) of the main macronutrients (NPK), along with the action of urease, lead to unproductive loss of nutrients in the soil. In addition to economic losses, there are negative environmental consequences – eutrophication of water bodies, emission of greenhouse gases. The studies were carried out in 2022 under production conditions in the Kursk district of the Stavropol Territory on the farm of “StavAgroCom” on southern carbonate chernozem. As a modifier of mineral fertilizers, one of the most common synthetic polymers, polyvinyl alcohol (PVA), was used. The polymer consumption rate was 3, 5 and 7 kg per 1 ton of fertilizer. Yield growth was positively correlated with the dose of polymer in the fertilizer. The analysis of soil properties was carried out by the method of principal components. The resulting clustering in the coordinates of the first two components (in total they explain 65% of the data variation) shows significant differences in soil properties under different experimental options. To assess the efficiency of the use of nutrients depending on the dose of the polymer, a differential indicator was proposed – the additional efficiency of the use of nutrients (E). It was estimated from the increase in yield relative to the zero dose of the polymer per unit reduction in the concentration of this element in the soil according to the proposed formula. It is shown that the polymer use in fertilizer gives a statistically significant increase in the efficiency of phosphorus and potassium use by winter wheat.

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The possibility of ranking agro-landscape zones (using computer modeling) according to the risks of potential epizootics and epidemics associated with bio-contamination has been demonstrated. The task of agroecological land assessment cannot be conceptually solved without taking into account all forms of contamination. Bio-contamination of agricultural landscapes, both reversible (weeds) and irreversible (for example, anthrax spores Bacillus anthracis), is considered as a form of permafrost soils degradation. The melting of glaciers and permafrost thawing influenced by global warming determine a number of challenges. In particular, the climatically-driven transformation of the Pleistocene biota leads to the release of greenhouse gases, including methane, which is an order of magnitude stronger than carbon dioxide in terms of its contribution to the greenhouse effect and significantly increases the threat of accelerating warming. This paper examines the consequences of paleobiotic nature: during “thawing of tundra” pathogenic organisms, that were previously in biospheric isolation, pose a threat. It is noted that some of them retain their vital functions when emerging from cryobiosis. Such organisms are capable of causing soil bio-contamination, both reversible and irreversible, and can cause new outbreaks of repeated epizootics. It is proposed to identify and assess the risk zones of paleo-bio-contamination by the method of geometric stratification. The method allows identification and designation of the risk zones of pathogen infestation in specific geographical regions. This paper presents an assessment of such risk zones for reindeer (Rangifer tarandus) infection with a highly pathogenic anthrax causative agent (Bacillus anthracis) in relation to the administrative units (regions) of the Republic of Sakha (Yakutia). The zoning results obtained in this way not only characterize the existing ecological situation and create the basis for its understanding, but can also serve as a basis for the development of recommendations for competent administrative decision-making on the regulation of further use of the studied landscapes.

<p>The undoubted challenge for science is the extraction of knowledge from fast growing heterogeneous datasets. Particularly, details of experimental setups are insufficiently formalized and can not be easily inserted into databases to be taken into account in the process of data integration and meta analyses.</p><p>For this purpose, we developed a scheme of formalization for object descriptions with its origination, protocols for field and laboratory measurements (including instruments and experimental conditions). It allows the integration of larger amounts of data accounting for its specifics of acquisition, for example, by applying adjustments, assigning weights to data sources (based on its reliability, method precision and experimental uncertainty) or directly accounting for experimental conditions in models.</p><p>This formalization is currently used to develop an electronic laboratory journal for soil research, intended for detailed description of a conducted or planned experiment.</p><p>The study aims to: 1) increase the reproducibility of scientific research results, 2) allow automatic data processing and error detection, and most importantly, 3) effective soil data mining for decision support systems.</p>

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