Long-term consequences of tillage, residue management, and crop rotation on selected soil micro-flora groups in the subtropical highlands

A DGGE analysis shows that crop rotation systems influence the bacterial and fungal communities in soils

“…One group of studies found that the microbial communities were influenced by the crop rotation system (Ngosong et al 2010;Yin et al 2010), and the other group found the opposite: that the crop rotation system had no significant effects on the microbial communities (Govaerts et al 2008;Wang et al 2010). Our present study corresponds with the former group, and further suggests that the crop rotation system might have different effects on the bacterial and fungal communities.…”

Phylogenetic and Multivariate Analyses To Determine the Effects of Different Tillage and Residue Management Practices on Soil Bacterial Communities

“…They showed that soils under zero tillage (ZT) and crop residue retention (ϩR) have better soil quality, crop yields, and catabolic diversity and a higher diversity of microflora groups than do soils under conventional tillage (CT) with or without crop residue retention (ϪR). The aim of this study was to complement the results of Govaerts et al (19,20,21,22) by using phylogenetic approaches and the additive main effect and multiplicative interactions (AMMI) model (18,60) to analyze the effect of the above treatments on soil bacterial communities.…”

“…Until now, most research has focused on microbial communities affected by agricultural practices, i.e., tillage and residue management, by using indicators such as plate counting and microbial biomass or by analyzing denaturing gradient gel bacterial banding patterns (21,22,37). Salles et al (46) reported the use of canonical correspondence analysis on denaturing gradient gel electrophoresis banding pattern data to understand the effect of crop and land history on Burkholderia communities.…”

“…Govaerts et al (19,20,21,22) had previously characterized the soils used in this study. They showed that soils under zero tillage (ZT) and crop residue retention (ϩR) have better soil quality, crop yields, and catabolic diversity and a higher diversity of microflora groups than do soils under conventional tillage (CT) with or without crop residue retention (ϪR).…”

The National Policy of Public Health and Nutrition in Latvia

“…A better understanding of soil ecology could lead to more precise management of soil organisms for beneficial purposes in agriculture. Management and cropping systems varying in soil mobilisation rates and plant-residue inputs can have profound effects on the biological properties of the soil (Govaerts et al, 2008;Silva et al, 2010). The soil microbial biomass is fundamental to maintaining soil function, as it represents the main source of soil enzymes that regulate the transformation processes of elements in soils.…”