Response of Soil Microbial Communities to Applications of Green Manures in Paddy at an Early Rice-Growing Stage

Abstract

Applications of green manures generally improve the soil quality in rice paddy in part through restructuring of soil microbial communities. To determine how different green manures affect soil microbial communities during the early stages of rice growth, fatty acid methyl ester (FAME) profiles were used to the effects of different management practices: 1) conventional farming (CF), 2) no-treatment (NT), 3) Chinese milk vetch (CMV), 4) green barley (GB), and 5) triticale in paddy field. With applications of green manures, soil organic matter was significantly higher than CF, while soil Na concentration was significantly lower compared with CF (p<0.05). Total soil microbial biomass of CMV was higher (p<0.05) than NF by approximately 31%. The highest ratio of monounsaturated fatty acid to saturated fatty acid was found in the GB plot, followed by CMV and triticale compared with CF (p<0.05), possibly indicating that microbial stress was less in GB and CMV plots. Populations of Gram-negative bacteria and arbuscular mycorrhizal fungi also were significantly higher green manures than CF (p<0.05). Our findings suggest that GB should be considered as optimum green manure for enhancing soil microbial community at an early growing stage in paddy field.

Effects of Continuous Application of Green Manures on Microbial Community in Paddy Soil

“…이러한 방법을 통해 무기질 및 유기질비료의 성분별‧시비수준별 토양 미생물군 집분포의 변화에 관한 연구들이 진행되었으며, 국내에서도 과원 및 농경지의 미생물군집분포에 관한 연구결과가 발표 되었다 (Bossio et al, 1998;Peacock et al, 2001;Zhang et al, 2007;Eo et al, 2010;Kim et al, 2015;. 국내 논 토양을 대상으로 한 미생물군집분포에 관한 연구는 무기질비료 장기연용에 의한 영향 및 풋거름보 리, 자운영의 환원에 의한 초기 미생물군집변화에 대하여 주로 이루어졌다 (Daquiado et al, 2013;Kim et al, 2011 (Bossio and Scow, 1998;Daquiado et al, 2013;Eo et al, 2015;Frostegard and Baath, 1996;Kaur et al, 2005;Li et al, 2006;Park and Kim, 2010;Zelles, 1999). Bold-italic factors correspond to the indicators which are considered highly influential on soil microbial community.…”

Relationship of Topography and Microbial Community from Paddy Soils in Gyeongnam Province

“…최근에는 토양 미생물 의 세포벽 지방산 조성을 간단하고 빠르게 분석할 수 있는 Fatty acid methyl ester (FAME) 방법을 사용하여 토양의 미 생물 생체량과 군집을 쉽게 분석할 수 있다 Macalady et al, 1998;Schutter and Dick, 2000). 이러한 기술을 Kim and Lee (2011) 용되는 (Bossio and Scow, 1998;Kieft et al, 1997) 와 하성평탄지 44 nmol g -1 보다 3배 정도 높았다 (Lee and Ha, 2011 …”

Soil microbial communities of Japanese apricot (Prunus mume) orchard under organic and conventional management

“…For this reason, the need for new technologies to understand the soil microbial community structure is emphasized. Recently, several useful approaches (cultureindependent techniques) have been developed to solve problems with conventional culture-dependent methods, including fatty acid methyl ester (FAME) analysis, 16S rRNA probes, and restriction fragment length polymorphism (RFLP) analysis [9,13,[16][17][18][19][20][21].…”