Biochemical Features of Natural Herb–Grass Phytocenosis at Different Degrees of Alimentation in Conditions of Central Yakutia
Abstract
Biochemical and mineral composition of fodder herbs depending on degree of moisturization and of mode of alimentation in conditions of cryosolic, inundated and stratified soils of Central Yakutia was examined. We determined for the first time the availability, consumption of alimentation elements and coefficient of utilization of fertilizations for the herb–grass phytocenosisin conditions of The Middle Lena.
It was established that at organic and mineral alimentation mode and optimal moisture conditions the content of crude protein was 6.5% higher (up to 14.8%), the content of crude ash 1.6% higher, the content of crude cellulose, on the contrary, was 1.6 % lower in comparison with the control without fertilizers. The effectiveness of the fertilizers increase at high humidity. For example, a content of crude protein increase up to 16%. Mineral composition of herb–grass phytocenosis in conditions of organic and mineral alimentation forms an optimal content of elements in the forrage. Utilisation of humus in dose 20 ton/hectare via every 4 years on the herb–grass phytocenosis provide a high effectiveness of coefficient of utilization of thefertilizers – nitrogen (up to 204%), potassium (up to 62%) and phosphorus (up to 37%), that confirms a high adoption of the elements ofalimentation from organic fertilizer in conditions of the cryolithozone.
About the Authors
Natalya Vladimirovna Barashkova
Institute for Biological Problems of Cryolithozone SB RAS
Russian Federation
Russian Federation
Vasena Vasilievna Ustinova
Institute for Biological Problems of Cryolithozone SB RAS
Russian Federation
Russian Federation
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Review
For citations:
Barashkova N.V., Ustinova V.V. Biochemical Features of Natural Herb–Grass Phytocenosis at Different Degrees of Alimentation in Conditions of Central Yakutia. Arctic and Subarctic Natural Resources. 2016;21(2):108-117. (In Russ.)
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