The Influence of Methods of Intensification in Agriculture on the Algal Flora of Leached Chernozem
- DOI
- 10.2991/assehr.k.200113.150How to use a DOI?
- Keywords
- microbiocenosis, algal flora, soil, agrocenosis, fertilizers, pesticides, plants
- Abstract
Soil algae are often used as bioindicators in assessing the ecological state of the soil. The experiment with alfalfa was carried out on the basis of six-field grain-grass crop rotation in the southern forest-steppe of Western Siberia. The stud-ies were conducted on three agrochemical backgrounds. At the biological background, only organic fertilizer was intro-duced (straw and cattle manure), at combined background — complex application of mineral fertilizers in a dose of N20P90, straw and cattle manure, at intensive background — full mineral fertilizer in a dose of N20P90K40 in combination with organic and plant protection products. The object of the study was the algal flora of leached chernozem: from eukaryotes - green (Chlorophyla), yellow-green (Xanlhophyla), diatoms (Bacillariophyla), from prokaryotes – cyano-bacteria (Cyanobacleriu) or blue-green algae. The analysis of the action of the studied factors was carried out accord-ing to the quantitative indicator, the number of cells in one gram of soil (cells/g of soil). When applying the maximum dose of mineral fertilizers, the total number of living algae cells decreased by 70Soil algae are often used as bioindicators in assessing the ecological state of the soil. The experiment with alfalfa was carried out on the basis of six-field grain-grass crop rotation in the southern forest-steppe of Western Siberia. The stud-ies were conducted on three agrochemical backgrounds. At the biological background, only organic fertilizer was intro-duced (straw and cattle manure), at combined background — complex application of mineral fertilizers in a dose of N20P90, straw and cattle manure, at intensive background — full mineral fertilizer in a dose of N20P90K40 in combination with organic and plant protection products. The object of the study was the algal flora of leached chernozem: from eukaryotes - green (Chlorophyla), yellow-green (Xanlhophyla), diatoms (Bacillariophyla), from prokaryotes – cyano-bacteria (Cyanobacleriu) or blue-green algae. The analysis of the action of the studied factors was carried out accord-ing to the quantitative indicator, the number of cells in one gram of soil (cells/g of soil). When applying the maximum dose of mineral fertilizers, the total number of living algae cells decreased by 70% (102.4 thousand cells/g of soil). When using organic fertilizers (cattle manure, straw) on the same mineral back-ground, the number of cells increased by 98Soil algae are often used as bioindicators in assessing the ecological state of the soil. The experiment with alfalfa was carried out on the basis of six-field grain-grass crop rotation in the southern forest-steppe of Western Siberia. The stud-ies were conducted on three agrochemical backgrounds. At the biological background, only organic fertilizer was intro-duced (straw and cattle manure), at combined background — complex application of mineral fertilizers in a dose of N20P90, straw and cattle manure, at intensive background — full mineral fertilizer in a dose of N20P90K40 in combination with organic and plant protection products. The object of the study was the algal flora of leached chernozem: from eukaryotes - green (Chlorophyla), yellow-green (Xanlhophyla), diatoms (Bacillariophyla), from prokaryotes – cyano-bacteria (Cyanobacleriu) or blue-green algae. The analysis of the action of the studied factors was carried out accord-ing to the quantitative indicator, the number of cells in one gram of soil (cells/g of soil). When applying the maximum dose of mineral fertilizers, the total number of living algae cells decreased by 70% (102.4 thousand cells/g of soil). When using organic fertilizers (cattle manure, straw) on the same mineral back-ground, the number of cells increased by 98%. The negative impact of agrochemical agents on the algal flora was man-ifested directly in the year of application; in subsequent years, the number of algae cells increased. Under the alfalfa of the third year of vegetation from the total number of living cells, the share of green and yellow-green accounted for 66-97Soil algae are often used as bioindicators in assessing the ecological state of the soil. The experiment with alfalfa was carried out on the basis of six-field grain-grass crop rotation in the southern forest-steppe of Western Siberia. The stud-ies were conducted on three agrochemical backgrounds. At the biological background, only organic fertilizer was intro-duced (straw and cattle manure), at combined background — complex application of mineral fertilizers in a dose of N20P90, straw and cattle manure, at intensive background — full mineral fertilizer in a dose of N20P90K40 in combination with organic and plant protection products. The object of the study was the algal flora of leached chernozem: from eukaryotes - green (Chlorophyla), yellow-green (Xanlhophyla), diatoms (Bacillariophyla), from prokaryotes – cyano-bacteria (Cyanobacleriu) or blue-green algae. The analysis of the action of the studied factors was carried out accord-ing to the quantitative indicator, the number of cells in one gram of soil (cells/g of soil). When applying the maximum dose of mineral fertilizers, the total number of living algae cells decreased by 70% (102.4 thousand cells/g of soil). When using organic fertilizers (cattle manure, straw) on the same mineral back-ground, the number of cells increased by 98%. The negative impact of agrochemical agents on the algal flora was man-ifested directly in the year of application; in subsequent years, the number of algae cells increased. Under the alfalfa of the third year of vegetation from the total number of living cells, the share of green and yellow-green accounted for 66-97%. Diatoms were more sensitive to the use of chemicals.
- Copyright
- © 2020, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Natalia Voronkova AU - Lidiya Bashkatova AU - Natalia Balabanova AU - Marina Sklyarova PY - 2020 DA - 2020/01/29 TI - The Influence of Methods of Intensification in Agriculture on the Algal Flora of Leached Chernozem BT - Proceedings of the International Scientific Conference The Fifth Technological Order: Prospects for the Development and Modernization of the Russian Agro-Industrial Sector (TFTS 2019) PB - Atlantis Press SP - 109 EP - 113 SN - 2352-5398 UR - https://doi.org/10.2991/assehr.k.200113.150 DO - 10.2991/assehr.k.200113.150 ID - Voronkova2020 ER -