نتایج جستجو برای: earthworms

تعداد نتایج: 1768  

2008
Andrew R. HOLDSWORTH

The effects of invasive earthworms on decomposition are little known, and the controls of their effect on decomposition may be different than those of microbes. Sugar maple–dominated forests previously devoid of earthworms in the western Great Lakes region (USA) exhibit different degrees of earthworm invasion, presenting a natural experiment to study its effects on litter decomposition. We hypo...

2017
M.Lakshmi Prabha

Vermicomposting is the process of converting organic wastes into valuable organic fertilizer by earthworms. Vermicompost is rich in metal ions and has the potential to be used as an electrolyte. The main aim of this investigation is to explore the potential of earthworms to convert the fruit waste into high quality vermicompost which can serve as a solution to solid waste management issues and ...

2016
Rishikesh K. Tiwari Shikha Singh Ravi S. Pandey Bechan Sharma

The importance of the earthworms in the agricultural practices is well known. The increasing applications of pesticides and chemicals in the agricultural farms have adversely influenced the flora and fauna of the soil. Earthworms which immensely contribute in increasing the quality and fertility of agricultural soil are reported be worst hit organisms under such conditions. Recent reports have ...

2002
Mac A. Callaham Ross J. Phillips

This study documents the occurrence of an aggressive invasive earthworm species in undisturbed forest soils of the southern Appalachian Mountains of northern Georgia, USA. Earthworms were sorted from samples collected in pitfall traps that had been set in mature, mesic oak-hickory forests in remote, high elevation, locations across northern Georgia. Specimens were continuously collected in thes...

2015
Siul Ruiz Dani Or Stanislaus J. Schymanski Raffaella Balestrini

We quantify mechanical processes common to soil penetration by earthworms and growing plant roots, including the energetic requirements for soil plastic displacement. The basic mechanical model considers cavity expansion into a plastic wet soil involving wedging by root tips or earthworms via cone-like penetration followed by cavity expansion due to pressurized earthworm hydroskeleton or root r...

2003
M. A. Callaham J. M. Blair T. C. Todd D. J. Kitchen M. R. Whiles

The responses of tallgrass prairie plant communities and ecosystem processes to fire and grazing are well characterized. However, responses of invertebrate consumer groups, and particularly soil-dwelling organisms, to these disturbances are not well known. At Konza Prairie Biological Station, we sampled soil macroinvertebrates in 1994 and 1999 as part of a long-term experiment designed to exami...

2017
Willem Van Hoesel Alexandra Tiefenbacher Nina König Verena M. Dorn Julia F. Hagenguth Urša Prah Theresia Widhalm Viktoria Wiklicky Robert Koller Michael Bonkowski Jan Lagerlöf Andreas Ratzenböck Johann G. Zaller

Seed dressing, i.e., the treatment of crop seeds with insecticides and/or fungicides, aiming to protect seeds from pests and diseases, is widely used in conventional agriculture. During the growing season, those crop fields often receive additional broadband herbicide applications. However, despite this broad utilization, very little is known on potential side effects or interactions between th...

2017
Jyoti Yadav Dharambir Singh Swati Sindhu Rajesh Gera

Earthworms being the most efficient soil organism to improve soil fertility by burrowing deeply into subsoil surfaces and then releasing it out in the form of nutrient enriched cast (Lavelle, 2011). As they are abundant in number and highly productive species, so they are keystone species in the food web of soil environment (Thakuria et al., 2010). Earthworm burrows and drilosphere act as micro...

2011
Yung-Ming Chang Ying-Ting Shih Yueh-Sheng Chen Chien-Liang Liu Wen-Kuei Fang Chang-Hai Tsai Fuu-Jen Tsai Wei-Wen Kuo Tung-Yuan Lai Chih-Yang Huang

The earthworm, which has stasis removal and wound-healing functions, is a widely used Chinese herbal medicine in China. Schwann cell migration is critical for the regeneration of injured nerves. Schwann cells provide an essentially supportive activity for neuron regeneration. However, the molecular migration mechanisms induced by earthworms in Schwann cells remain unclear. Here, we investigate ...

Journal: :The Science of the total environment 2008
Surindra Suthar Sushma Singh

The feasibility of vermicomposting technology to stabilize the distillery industry sludge mixed with a bulking agent (cow dung) in different proportions viz. 20% (T1), 40% (T2), 60% (T3) and 80% (T4), was tested using composting earthworm Perionyx excavatus for 90 days. The vermitreated sludge was evaluated for different physico-chemical parameters and all vermibeds expressed a significant decr...

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