The assimilation of nutrients by plants to a significant extent depends on the factors of the external environment, the most important of which is soil moisture. For proper growth, development and formation of a high yield, normal soil moistening is necessary throughout the growing season. 70% to 80% percent soil moisture is considered optimal for wheat. At lower humidity and the drop to 40%, the entry of nitrogen into the roots and leaves is sharply suppressed. On the other hand, waterlogging of the soil leads to changes in the gas composition, which causes a strong reduction in the ability to absorb nutrients and disrupts the metabolism of the entire plant. Unfortunately, in recent years, these are quite common phenomena from drought to waterlogging. Soil moisture directly affects the content of nitrogen, phosphorus and potassium in the above-ground and underground parts of wheat. With reduced humidity, the reduction of macro elements in the twining node is clearly expressed, and from there, plant development slows down. In waterlogging, this process is significantly weaker. Unlike nitrogen and potassium, in case of waterlogging, phosphorus has a difficult movement from the root to the root node and the leaves as a result of the created anaerobic conditions in the soil. Differences in the percentage of macronutrients are also observed in the roots during this phase.
The negative influence of low soil moisture during the autumn-winter period on the content of nitrogen, phosphorus and potassium intensifies at the end of winter when temperatures rise and vital processes become active.
In three annual trials of wheat treated with SoGrow products at 40% and 65% soil moisture. Content of nitrogen, phosphorus and potassium in the roots, shoot nodes and leaves of plants grown at 45% soil moisture did not differ from plants grown at 65% soil moisture.
At a high soil humidity of about 90%, the movement of nitrogen, phosphorus and potassium is strongly suppressed, especially at the end of winter, as in the untreated areas the ratio of macroelements in the plants is significantly less than in the treated areas at 45% soil humidity.
Seeds treated with VitAid and Charge Organic and plants treated with VitAid and L-booster enable the development of a stronger root system, thickening of the cell wall, accumulation of sugars in the twining nodes, optimal ratio of N:K and N:P in plants this positively correlates with the increased intensity of growth processes.