ИСТИНА

The discussion about nutrition-friendly agriculture should always take into account the soil – plant (animal) – human triad in regard to nutrition. Humans derive nutrition through food – plants and animals which derive their nutrition from soils. Soil is the main source of most microelements (both essential or harmful for people). Toxicities or deficiencies of microelements in soils can result in health problems or can influence on the quality and taste of food. The range of the content of micronutrients in soils is extremely wide: the quantities at different locations or at different depth of soils can differ by several orders of magnitude and are mainly predetermined by geochemical features of the region, landscape and the soil itself. There are many aspects influencing the total quantity and availability of micronutrients for plants. The list of bedrocks of Uzbekistan: loess loam and clay, alluvial-proluvial deposits, limestone eluvium and delusions, marine and lake sediments. We suppose that the use of intensive agriculture does not allow plants to uptake the sufficient amount of essential micronutrients from soils (if there is a sufficient amount of them in soils) as it needs time to extract them and is also restrained in case of excessive watering (intensive irrigation) due to dilution of the soil solution. The most exciting moment in the geochemistry of the food chain is that some elements are abundant in the soil, act as trace elements in plants (iron, for example), but are more in demand by animals and humans.