Search

In order to screen soil invertebrates for deriving soil environmental criteria, representative native soil invertebrates were selected according to their ecological significance and geographical distribution range. The toxicity data of soil invertebrates were collected from published literature and authoritative databases such as ECOTOX, and further analyzed with sensitivity distribution method. The results showed that: Eisenia(Eisenia fetida, Eisenia andrei), Lumbricus(Lumbricus terrestris, Lumbricus rubellus), Allolobophora(Allolobophora caliginosa trapezoides), Lumbriculus(Lumbriculus variegatus), Pheretima (Pheretima guillelmi), and Fridericia (Fridericia bulbosa, Enchytraeids albidus) can be used as the test soil Annulata organisms for deriving soil environmental criteria; Dolichoceras(Folsomia candida, Folsomia fimetaria, Sinella curviseta), Isomeris (Proisotoma minuta), and Platychthys (Platynothrus peltifer) can be used as the test soil Arthropod organisms for deriving soil environmental criteria; Achatina(Achatina fulica) of the Achatinidae family can be used as the test soil Mollusca organisms for deriving soil environmental criteria. Caenorhabditis(Caenorhabditis elegans) and Meloidogyne(Meloidogyne incognita) can be used as the test soil Nematoda organisms for deriving soil environmental criteria. According to the toxicity data, 17 soil invertebrates species belonging to 4 phyla and 15 families were selected, which could be used as the test organisms for deriving soil environmental criteria. [ABSTRACT FROM AUTHOR]

Organophosphorus pesticides (OPPs) are used in agriculture, which could be transformed by surface runoff, volatilization and migration into soil, then residual in lake water, atmosphere, soil and enrichment in organisms, and finally posed a risk to human health. Based on the data from published articles, the species and contents of OPPs in different water bodies of the world were compared, the mechanism of poisoning caused by OPPs was summarized, the advantages and disadvantages of five OPPs detection methods, such as chromatography, immunoassay, enzyme hydrolysis, enzyme inhibition and electrochemical, were summarized, and six common techniques for the removal of OPPs from water bodies are also described. The distribution of organophosphorus pesticides, detection techniques, relevant laws and regulations, and removal methods were systematically reviewed, which could provide reference for researchers and managers to quickly acquire basic knowledge in the field of OPPs. [ABSTRACT FROM AUTHOR]

The field trials on terminal residue and dissipation of difenoconazole in celery were carried out in Hunan and Shandong Provinces, and the acute toxicity of 10% difenoconazole water dispersible granule (WG) on soil organisms were studied in the laboratory. Based on the residue data and toxicity endpoints, the long-term and short-term dietary intake risks of difenoconazole to different populations in China and the environmental risks to soil organisms were evaluated. The results showed that the halflife of difenoconazole in celery leaves, stems and soil were 5.2-8.8 d, 8.0-8.2 d and 13.6-15.0 d, respectively. After the formulation was applied for three times with the interval of 5 days at the recommended dosage of 120 g/hm2, the residue of difenoconazole in celery leaves was higher than MRL (3 mg/kg, China) and the residues in celery stem and the whole celery seedling were less than MRL on the 5th day after last application. The short-term dietary intake risk quotient (RQa ) for the general population and children aged 1-6 years were 0.09 and 0.10, respectively. The long-term dietary risk assessment results showed that the contribution rate of the residues in celery for different populations in China was 9.4%-19.8%. The primary risk of 10% difenoconazole WG to soil organism was acceptable with acute risk quotient (RQe ) of 0.368-0.890. [ABSTRACT FROM AUTHOR]

Copyright of Acta Agriculturae Zhejiangensis is the property of Acta Agriculturae Zhejiangensis Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Microplastic pollution has become one of the global environmental concerns. In recent years, soil microplastic pollution has attracted considerable attention. From the perspective of soil microplastic pollution prevention and control, this study summarized the research progress in the definition, detection methods, distribution characteristics, sources, toxic effect on soil organisms, and pollution prevention of microplastic in soil. Furthermore, the findings of existing studies were used to propose two research prospects: basic scientific research on microplastics and specific research paths for the prevention and control and decision-making for soil microplastic. These research prospects might stimulate new ideas for future research on soil microplastic. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Big Data is the property of Journal of Agricultural Big Data Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective]In order to select the growth-promoting crops for bio-controlling the soil-borne diseases, soil biological properties and bacterial diversity in rhizospheres among different crops were analyzed and explored whether they could be used as the biological indicators for the selection of the growth-promoting crops.[Method]The present study assessed the Cucurbits, Leguminosae and Convolvulaceae crops as the research subjects, and compared the soil biological characteristics and bacterial community structure in rhizospheres of different crops.[Result] The soil enzyme activities in rhizosphere of Cucurbit involved in soil carbon, nitrogen and phosphorus cycling had no significant difference between each other, without any complementarity.However, soil enzyme activities in rhizosphere between cucurbit crops and sweet potato or legume cowpea showed a significant difference between each other, which indicated that a good complementary effect could be found out in soils between cucurbit crops and sweet potato or legume cowpea.In addition, the results of bacterial diversity showed that the dominant bacterial species in rhizosphere of cucurbit crops tended to be similar.By contrast, specific bacterial species could be found out in rhizospheres of cowpea and sweet potato, respectively.It also indicated that a good complementary effect for bacterial diversity in rhizosphere of cucurbit crops could be implemented by using cowpea or sweet potato for inter-cropping.[Conclusion] Soil enzyme activities, related to carbon, nitrogen and phosphorus cycling, and the indexes of bacterial diversity in rhizosphere, could be used as bio-indicators to identify thecomplementarity effect in rhizosphere among different crops.Meanwhile, it also showed that cowpea and sweet potato, both had the potential in promoting the rhizosphere microenvironment of cucumber, bottle gourd and pumpkin which was according to their biological properties and bacterial diversity. [ABSTRACT FROM AUTHOR]