IMPACT OF SAPROPEL ON THE QUANTITATIVE PARAMETERS OF CORN PRODUCTIVITY

Pollution of water basins caused by the elements of mineral fertilizers removed from the soil by precipitation and floodwaters is a relevant environmental problem. In this regard, the aim is to minimize application of fertilizers and their propping in the soil. Application of NPK fertilizers in the mixture with natural organic fertilizer sapropel is seen as one of the possible approaches and solutions. This component of organomineral mixtures is extracted from the lakes in Novosibirsk Region; its reserves are estimated as 600 million tons. The paper highlights that sapropel contains chelate agents that take the molecules of fertilizers and keep them from moisture removal, and at the same time do not prevent their assimilation by plants. The researchers outlined a significant effect of sapropel on the productivity of spring wheat when it is applied on grey forest soils. When presowing application of sapropel dosed as 4 and 8 kg/m2, the researchers observed significant increase of crops individual productivity in comparison with that in the control group, and gradual growth caused by higher dose applied. The paper highlights the experimental results of the impact caused by sapropel when growing three forms of corn. These are C4-photosynthetic crops, with much more intensive assimilation of CO2 per unit of time in comparison with wheat, and therefore with a more active consuming of mineral elements from the soil. The experiments revealed genetic polymorphism of the studied samples of corn in response to sapropel applied according to quantitative parameters.

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