Soil microbial properties under different management systems in soybean production

Zbornik Matice Srpske za Prirodne Nauke Pub Date : 2020-01-01 DOI:10.2298/zmspn2038041m

J. Marinković, D. Bjelić, B. Tintor, V. Đorđević, S. Balešević-Tubić, V. Đukić, M. Ćeran

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引用次数: 1

Abstract

The aim of the study was to examine the effects of management practice on microbial properties of soil under soybean production. The study included 180 samples of soil under certified organic soybean production and 80 samples in conventional production system. An abundance of the examined microbial groups was assessed using the indirect dilution method, followed by plating of soil suspension on different selective media, while dehydrogenase and ?-glucosidase activity was measured spectrophotometrically. Our data indicated that the management practice affected the structure and activity of microbial com?munities. A significant positive effect of organic farming on Azotobacter spp., free N-fixers and abundance of actinomycetes was identified. The influence of management system for the total number of bacteria, ammonifiers and fungi was not observed. Significantly higher dehydrogenase and ?-glucosidase activity was recorded in the soils under organic farming compared to the conventional farming. The obtained results showed an increase in organic matter content, associated with organic soil management, and its positive correlation with soil microbial properties.

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大豆不同管理制度下土壤微生物特性研究

本研究旨在探讨大豆生产过程中管理措施对土壤微生物特性的影响。本研究包括180个有机大豆认证生产土壤样品和80个常规生产土壤样品。采用间接稀释法评估所检测微生物群的丰度，然后将土壤悬浮液镀在不同的选择培养基上，同时分光光度法测定脱氢酶和-葡萄糖苷酶活性。我们的数据表明，管理实践影响了微生物群落的结构和活性。有机耕作对固氮菌、游离固氮菌和放线菌丰度有显著的正向影响。没有观察到管理制度对细菌总数、氨化菌总数和真菌总数的影响。有机耕作土壤脱氢酶和-葡萄糖苷酶活性显著高于常规耕作土壤。结果表明，有机质含量的增加与有机土壤管理有关，与土壤微生物特性呈正相关。

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Zbornik Matice Srpske za Prirodne Nauke

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8 weeks