COMPARATIVE STUDY OF THE DIFFERENT TYPES OF ORGANIC FERTILIZERS INFLUENCE ON THE CONTENT OF HUMUS IN TECHNOLOGICALLY DISTURBED LIGHT GRAY FOREST LIGHT LOAMY SOIL
2019
Titova, Vera | Vetchinnikov, Aleksandr | Krasovsky, Aleksandr
Mechanical mixing of the arable and subsurface layers of light gray forest light loamy soil in a 1:3 ratio leads to the fact that it significantly reduces fertility by the content of organic matter - by 64.7% compared to the corresponding characteristics of the arable layer of the background soil. To restore the fertility of the disturbed soil with its content under the cultural cenosis with a very high projective cover (about 80-95%) and with two years of green manure application, but without fertilizer and agricultural amelioration (control version) for 6 years of observations failed. The application of cattle manure at a dose of about 100 t/ha leads to an improvement in the basic agrochemical indicators of the soil to the “insignificant decrease in fertility” characteristic of the humus content after 5 years. By the effectiveness of the impact on the content of humus in the soil, the studied organic fertilizers can be arranged in the following order in descending order: cattle manure half-subdued <straw-dung and peat-manure composts <straw of spring grains <peat transitional.
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