Herbicides influence tHe community structure of tHe soil mezofauna
نویسنده
چکیده
VelcheVa, I., S. PetroVa, I. MolloV, G. GecheVa and D. GeorGIeV, 2012. Herbicides influence the community structure of the soil mezofauna. Bulg. J. Agric. Sci., 18: 742-748 A field bioassay was carried out to assess the impact of “NIRVANA” (active substances imazamox and pendimethalin) and “STOMP 330 EC” (active substance pendimethalin) herbicides residues to the soil mezofauna. The investigated herbicides caused changes in the community structure of the soil mezofauna. Highest negative impact (suppression of all studied ecological parameters) was observed until the 100-th day after treatment, and on the experimental plots treated with high concentrations of pendimethalin. The dynamic of the soil community structure was found to be related with those of the pesticides content.
منابع مشابه
Influence of herbicides on yield stability of winter wheat cultivars under different sowing rates
Yield variability of selected winter wheat cultivars under different sowing rate and selected application, was investigated during 2006-2008, in the Lower Silesia region (South-West Poland). Experiments with two varieties, two levels of sowing rate and seven herbicides, including untreated object were set up on the same field, using split-plot method. For evaluation of yield stability Kang'...
متن کاملBacterial responses to environmental herbicide pollutants (glyphosate and paraquat)
The toxic effect of herbicides on non- target microorganisms may influence degradation of organic matter resulting in changes to nutrient cycling. In the present study, different strains of bacteria incubated in media containing different concentrations of glyphosate and paraquat were assessed over a period of two incubation terms. The deleterious impact of the herbicide was observed as glyphos...
متن کاملNovel a - ketoglutarate dioxygenase tfdA - related genes are found in soil DNA after exposure to phenoxyalkanoic herbicidesemi
Phenoxyalkanoic herbicides such as 2,4-dichlorophenoxyacetate (2,4-D), 2,4-dichlorophenoxybutyrate (2,4-DB) or mecoprop are widely used to control broad-leaf weeds. Several bacteria have been reported to degrade these herbicides using the a-ketoglutarate-dependent, 2,4-dichlorophenoxyacetate dioxygenase encoded by the tfdA gene, as the enzyme catalysing the first step in the catabolic pathway. ...
متن کاملThe Community Structures of Prokaryotes and Fungi in Mountain Pasture Soils are Highly Correlated and Primarily Influenced by pH
Traditionally, conservation and management of mountain pastures has been managed solely on the basis of visible biota. However, microorganisms play a vital role for the functioning of the soil ecosystem and, hence, pasture sustainability. Here, we studied the links between soil microbial (belowground) community structure (using amplicon sequencing of prokaryotes and fungi), other soil physicoch...
متن کاملتأثیر ماده آلی و بافت خاک بر تجزیه علف کشهای آترازین و متامیترون
Of all types of xenobiotics, pesticides such as herbicides play a significant role in soil and water pollution due to their widely usage all over the world. This study addresses the ability of organic amendments to enhance atrazine and metamitron degradation in two herbicide contaminated soils with contrasting textures under laboratory conditions. Soil samples were collected from surface soils ...
متن کامل