Lettuce (Lactuca sativa) is a major leafy vegetable and is commonly used in salad mixes and sandwiches. Therefore, lettuce can contribute significantly to the nutritional content of healthy diets. One specific nutritional problem that needs attention is mineral (e.g., Fe, Zn) malnutrition, which impacts over two-thirds of the World’s people living in countries of every economic status. Also, consumption of salads Microgreens, the edible cotyledons of many vegetables has been gaining popularity as a culinary trend due to its flavor and density of minerals that can be sustainably produced in almost any locale. In this study, the nutrient contents of both mature and microgreen oakleaf lettuce grown on rockwool mat were assessed and compared to each other together with the phytonutrient contents like ascorbic acid, total antioxidant capacity and total phenolic content. Of the 10 nutrients examined (P, K, S, Ca, Mg, Mn, Cu, Zn, Fe, N), lettuce microgreens had significantly larger quantities of all nutrients than mature lettuce except for the Ca and K. As microgreens can be grown easily in one’s home using the methods used in this study, they may provide a means for consumer access to larger quantities of nutrients per gram plant biomass relative to store-bought mature lettuce, which had relatively lower nutrient contents than microgreens with respect to most nutrients examined.

The principal possibility to cultivate radish in open ground in autumn is tested. Hydrothermal nanosilica applied as topdressing have been used to increase plant adaptability to low positive temperature. Small-scale trials were carried out in the Moscow region in 2017. Marketable radish yield of 1.2 kg/m² (‘Mercado’) or 2.5 kg/m² (‘Carmen’) is obtained.

In the historical perspective, systems for growing food plants have changed in accordance with the development of the technological structures of humanity. The transition from growing plants in open ground with practically unregulated natural conditions to semi-enclosed (industrial greenhouses, vertical farms, phytotech complexes) with an increase in the proportion of controlled microclimatic parameters allowed to achieve an increase in plant productivity. The logic of further social development leads to an understanding of the need to create and use closed tehnobioecosystems of the synergotron class for food production with a a high content of biologically active substances and to save production resources. The paper presents a review of the history of the development of views and concepts of using biological and technical knowledge in the Agrarian Science and production with the purpose to improve the efficiency of agricultural production of open and protected soils, as well as the emergence of new approaches associated with the creation of closed tehnobioecosystems of the synergotron class based on developing digital technologies applied to agricultural science and innovative agricultural production.

Experiments on application of hydrothermal nanosilica to increase productivity agricultural plants were carried out. Nanosilica sol was produced by ultrafiltration membrane concentration of orthosilicic acid polymers of hydrothermal solution to SiO2 content 10–20 mas. %. Plants treatment was done by diluted sol with SiO2 content in the range 0.0001–0.2 mas. %. Treatment of seeds ore upground parts of plants once ore twice was applied. SiO2 consumption was about 10–20 g per hectare. Experiments with wide range of plants was done, including potatoes, cabbage, vegetable marrow, onion, mustard, amaranth, tomato, sugar, wheat, beet and radish. Besides productivity biochemical and biometric parameters were changed: plants height, quantity, length, wide of leafs and others. For example, in upground mass of amaranth was detected decreasing of cellular tissue content and increasing grease, total saccharin content with constant content of carotene and protein. In amaranth seeds increasing of oil, squalene, starch, protein, vitamin C content was detected.

The aim of the research is to study the quantitative content of macro- and micronutrients in the seeds of the Celery family. In the work using the method of X-ray fluorescence analysis, the elemental composition of the seeds of celery crops - carrots, parsley, celery, coriander and parsnip was studied. Individual profiles were compiled (series on the accumulation of macro- and microelements) and their similarity was noted for most elements, which indicates a common metabolic process in plants of related species. Of the macrocells in the seeds of the studied species, Ca and K, as well as P, Mg, S, accumulate in the maximum amount, and of the trace elements Fe, Zn, Mn. Differences in the accumulation of elements in different cultures depended on the type of macro- or microelement. The types of accumulation of Ca, P, K, Zn, Pb, Ni, Zr are relatively weak in types, and the concentrations of Si, Na, Al, Br, Ti Sr, and Fe are most variable in cultures. Significant accumulation of Si in parsnip seeds was noted which is not typical for other studied species. In general, parsnip seeds have the richest set of macro- and microelements in comparison with other celery crops. The seed samples analyzed had a wide variety in the mineral composition. Numerous variations among species belonging to the same family are probably due to individual genetic structure, as well as different growing conditions.

The relevance of research on molecular hydrogen in the world has increased significantly, since it turned out to be an extremely unique reagent, since it has the ability to act at the cellular level. Hydrogen is able to cross the blood-brain barrier, penetrate into mitochondria and other areas of cells, where it exhibits antioxidant, anti-apoptotic, anti-inflammatory and cytoprotective properties. The aim of the scientific review is to theoretically substantiate the current state of the use of molecular hydrogen and hydrogen water in environmentally friendly and sports medicine. For this, evidence has been provided regarding the effect of consumption of molecular hydrogen and hydrogen water on changes in physiological and biochemical parameters, taking into account the oxidative stress caused by exercise. In addition, this review highlights possible future directions in this area of research.