The purpose of this study was to investigate the effect of a biological humic preparation – “HUMIN PLUS”, made from natural raw materials – environmentally friendly lake sapropel on the biological development of agricultural crops. The study consisted in obtaining information and assessing the effect of a biological product on the dynamics of seedlings development, planting density, as well as crop productivity. To assess the preparation, as well as to identify the effect on the stages of plant ontogenesis, the physicochemical parameters were studied, including the content of humates, and trace elements in the sapropel extract. To interpret the effect of the growth regulator on the seed germination energy, an adaptive-neural inference system was used. To establish the nature of the action of preparation on the development biology of plant, in the conditions of Kazakhstan, a series of experiments were carried out at different stages of ontogenesis of agricultural crops. It was found that the action of the “HUMIN PLUS” preparation significantly increases the content of essential and nonessential amino acids. The findings have established that the sapropel extract “HUMIN PLUS” affects the biological activity of plants, accelerating the seed germination and increasing the productivity of agricultural crops in Kazakhstan.