Soil microbial community and microbial residues respond positively to minimum tillage under organic farming in Southern Germany

Sun, Hanyin; Koal, Philipp; Gerl, Georg; Schroll, Reiner; Gattinger, Andreas; Joergensen, Rainer Georg; Munch, Jean Charles

doi:10.1016/j.apsoil.2016.07.014

Cited by 53 publications

(17 citation statements)

References 85 publications

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“…This is in contrast to the usual expectation that the addition of organic fertilizers would decrease the values of these indices [69], but some studies do support our conclusions [70]. Our results could be caused by competition between fungi and bacteria for organic substrate and nutrients [71]. Namely, the rapid and massive proliferation of fungi after the addition of manure had antagonistic effects on bacterial growth.…”

Section: Effects Of Manure Substitution Of Chemical Fertilizer On Soicontrasting

confidence: 99%

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Luan

Gao²,

Huang

et al. 2020

PLoS ONE

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Section: Effects Of Manure Substitution Of Chemical Fertilizer On Soicontrasting

confidence: 99%

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Luan

Gao²,

Huang

et al. 2020

PLoS ONE

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“…() found higher total biomass in reduced till sites than in conventional tillage site; Sun et al . (), using the PLFA technique, found differences between organic and nonorganic agriculture, but not between conventional and minimum tillage.…”

Section: Discussionmentioning

confidence: 90%

“…We used three different approaches to analyse WSFA data: (i) the analysis of the individual fatty acids in the overall WSFA set, to find putative markers of soil use and management, (ii) the analysis of the pattern of chemical groups of fatty acids, as a hypothetical chemical adaptation response to changes in the microenvironments, modified by the soil management; and (iii) the analysis of specific fatty acids known as taxonomic markers of certain micro‐organisms. These different kinds of approaches have been broadly used to compare soils under different tillage treatments (Drijber et al ., ; Ritchie et al ., ; Calderon et al ., ; Ibekwe et al ., ; Feng et al ., ; Meriles et al ., ; Van Groenigen et al ., ; Sun et al ., ), but there is little information about changes in WSFA profiles in no‐till soil managed with different crop rotation intensities. The goal of this study was to look for lipid markers that characterize different agricultural soil management, considering that the lipid fraction of soil is more than microbial communities and including any biological material coming from living cells and also from nonliving organic matter.…”

Section: Introductionmentioning

confidence: 99%

Crop rotation in no‐till soils modifies the soil fatty acids signature

Ferrari

Ravnskov

Wall

2018

Soil Use and Management

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Analysis of whole‐soil fatty acids (WSFA) was used to characterize no‐till productive agricultural soils associated with different crop rotation managements on the Argentinean pampas, over two sampling seasons. Crop rotation (CR) treatment was compared with soybean monocropping (MC). Soils from nearby natural environments (NE) were used as reference treatments. The objective of this study was to characterize the soil lipid signature and seek putative markers of agricultural management. NE sites had greater concentration of total WSFA than agricultural sites, but no differences between CR and MC were identified. NE sites were characterized by straight chain and mono‐unsaturated fatty acids, such as 16:1ω5c, an established biomarker for arbuscular mycorrhiza. Comparing lipid profiles using multivariate methods allowed a comprehensive comparison among treatments. The CR and NE soil samples were more alike than those of MC, with several fatty acids in common. CR soils were associated with mixed, branched and hydroxylated fatty acids. MC profiles appeared to be enriched by 16:010Me and 18:1ω7c fatty acids, which could be potential treatment markers. Thus, use of the WSFA approach to study soil lipid signature appeared to be a sensitive method to characterize soil health and soil use and management. However, some of the fatty acids do not come from living cells but from soil organic matter, which sets a limitation on interpretation in terms of the microbial community but expands the biological origin of the soil lipid signature to any biological matter, alive or death, which is a constitutive part of the soil under study.

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“…Our samples were collected in 2013 after a long winter when the snow ended in May. In addition, we also observed increased microbial biomass compared with integrated farming [3]. Therefore, due to more WEOC consumption than its production, the production and consumption of WEOC became unbalanced.…”

Section: Weom Componentsmentioning

confidence: 99%

“…Tillage is basically used to prepare soil for plant growth, while organic farming, as a holistic management practice in agriculture, is conducted for achieving the objectives of protecting human health, conserving natural resources, and preserving the quality of environment while being economically sustainable [1]. Minimum tillage and organic farming practices are reported as having a potential of retaining more soil organic matter and enhancing microbial biomass and activities [2][3][4][5]. Water-extractable organic matter (WEOM) is the soluble fraction of organic matter extracted from the soil under various laboratory conditions, the most active and mobile fraction of soil organic matter (SOM).…”

Section: Introductionmentioning

confidence: 99%

Water-extractable organic matter and its fluorescence fractions in response to minimum tillage and organic farming in a Cambisol

Sun

Koal

Gerl

et al. 2017

Chem. Biol. Technol. Agric.

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Background: Minimum tillage (MT) and organic farming (OF) are increasingly conducted in agricultural managements from the interest of optimizing soil conditions and developing sustainable agriculture. Our understanding of their effects on water-extractable organic matter (WEOM) is still insufficient. Methods:To study the effects of MT and OF on WEOM, we analyzed soil materials sampled at two depths (0-8-cmupper soil and 12-25-cm-deeper soil) from long-term field experiments using different farming and tillage methods. The content, composition, and quality of WEOM were examined. Results:The results showed organic farming significantly decreased water-extractable organic carbon and nitrogen, but had positive effect on WEOM humic-like components revealed by parallel factor analysis with excitation-emission matrix, soil organic carbon (SOC), total nitrogen (TN), as well as SOC/TN. In addition, organic farming increased the aromaticity and condensation of WEOM as indicated by specific UV absorption and humification index. MT had no effect on WEOM both quantitatively and qualitatively but significantly decreased SOC and TN of the whole investigated soil profile. The depth effect was significant with strong stratification of WEOM, WEOM components as well as SOC and total N in upper soil. Moreover, the WEOM spectroscopic quality showed sharp differences between the upper and deeper soils. Conclusions:The results indicated that in the combined presence both tillage management and farming management, farming management imposed more influence on WEOM than tillage, and organic farming may facilitate the transformation of WEOM and lead to formation of WEOM with high stability. MT significantly changed the distribution of SOC and WEOM in soil, profile but did not increase the contents of SOC and WEOM in the site of the present study. However, the presence of larger pool of WEOM in MT + OF treatment at upper soil is likely to fuel possibly greater microbial activity and more rapid nutrient cycling in soil which can be favorable practice with potential in improving soil conditions in view of developing a sustainable ecosystem in the studied site

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Soil microbial community and microbial residues respond positively to minimum tillage under organic farming in Southern Germany

Cited by 53 publications

References 85 publications

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Crop rotation in no‐till soils modifies the soil fatty acids signature

Water-extractable organic matter and its fluorescence fractions in response to minimum tillage and organic farming in a Cambisol

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