Development of composition of mix of minerals in low doses with high biological activity for crop production

To develop the composition of the mixture of 6 trace elements in a dose of 10-4-10-7% with high biological activity used the method of biotesting of water solutions of minerals and mixtures of minerals. A high biological activity of aqueous solutions of salts of trace elements in low concentrations equivalent to their content in the soil: Cu, B, Mn - 0.13-0.20 mg/l; Co, Mo - 0.022-0.024 mg/l; Zn - 0.0011 mg/l. For each element the concentration in % order to maximize biological activity: Mn - 2.0´10-5, Cu - 1.3´10-5; Co - 2.1´10-6; Mo - 2.4´10-6; Zn 1.1´10-7; B - 1.75´10-5. Indicators of biological activity were achieved in the growth of the vegetative mass 2-40%, the mass of roots - 44-101% to the control variant. Developed by aqueous solutions of mixtures of 6 trace elements, taken in a concentration of maximum biological activity. Determined the compositions of water solutions of the 6 trace elements that do not have a toxic effect when used together. The increase in weight of roots of wheat seedlings of the selected composition containing in %: Zn - 10´10-7, Mo - 1.17´10-6, B - 1.86´10-4, Mn - 8.75´10-5, Cu - 1.15´10-5, Co - 0.55´10-5. In the growth of the vegetative mass of wheat seedlings of the selected composition containing in %: Zn - 10´10-7, Mo - 9.17´10-6, B - 1,86´10-4, Mn - 1.25´10-5, Cu - 1.15´10-5, Co - 1.45´10-5. In vegetative experience proved high biological activity of the designed composition of the mixture of trace elements in low concentrations in the cultivation of wheat.