نتایج جستجو برای: soil substrates
تعداد نتایج: 258599 فیلتر نتایج به سال:
Vertebrate corpse decomposition provides an important stage in nutrient cycling in most terrestrial habitats, yet microbially mediated processes are poorly understood. Here we combine deep microbial community characterization, community-level metabolic reconstruction, and soil biogeochemical assessment to understand the principles governing microbial community assembly during decomposition of m...
Nematodes are worm-shaped nearly microscopic animals, many of which are virtually invisible to the unaided eye when they are in the soil or within plant material. Of the known nematode species, approximately 50%, 25%, 15%, and 10% are free-living, marine, animal parasites, and plant parasitic nematodes (PPNs), respectively. Freeliving nematodes are very important in maintaining the soil bio-dyn...
Recent field and laboratory studies have evaluated the potential for aerobic co-metabolism of chlorinated solvents. Different co-metabolic substrates and different methods of application have been tried, including growing indigenous microbes in situ, and injecting into the soil subsurface strains grown in subsurface reactors for their co-metabolic potential. There is much potential for using co...
Muller (1879) was the first to recognize that soil animals play an important role in the development of soil. In fact soil fauna represents the most rewarding area of current biological exploration. Soil biota, constitutes the driving force of terrestrial ecosystems because they control the rate of turnover and mineralization of substrates. Yet they remain one of the least known biological fron...
In this study, we investigated the effects of organic waste and moisture superabsorbent on the amount of available water and delay in moisture equivalent of permanent wilting point (PWP) in soil. In the first phase (soil incubation phase), 12 treatments were studied in a completely randomized design at the Soil Science Laboratory of Science and Research Branch, Tehran. The treatments c...
Quality seedlings production is one of the most important steps in cultivation vegetable species. In this sense, objective was to evaluate influence different environments and substrates on “pimenta-de-cheiro” (Capsicum chinense Jacq.) Boa Vista, Roraima. An experiment installed a completely randomized design (CRD), with treatmentsarranged subdivided plots. Five were evaluated: AG - agricultura...
Minesoil profiles are reconstructed by alternative soil substrates worldwide. However, some lack appropriate characteristics and negatively affect the minesoil functions, these negative impacts largely caused deterioration of macropore structure. Nevertheless, differences typical substrate their influence on unclear. Thus, we present a case study to analyze number, size, connectivity, distribut...
Based on agricultural biomass resources and utilization in Shaanxi province, this experiment used decomposing mushroom residues, pine needles, peanut shells compounded with river sand as organic cultivation substrates, compared garden soil, carried out pot experiments to study the effect of different soilless substrates tomato yield, size number. The results show that CK1 (garden soil) CK2 (dec...
Extracellular enzymes synthesized by soil microbes play a central role in the biogeochemical cycling of nutrients in the environment. The pH optima of eight hydrolytic enzymes involved in the cycles of carbon, nitrogen, phosphorus, and sulfur, were assessed in a series of tropical forest soils of contrasting pH values from the Republic of Panama. Assays were conducted using 4-methylumbelliferon...
Use of earthworm species to biodegrade various substrates (industrial wastes, agricultural residues, etc.) for composting has proven to be successful after initial stabilization of vermi beds. This study presents optimization of vermi beds (soil + cowdung) for culturing of earthworms (Eisenia fetida, Eudrilus eugeniae, and Megascolex megascolex.). Optimum proportion of soil + cowdung (1:3) for ...
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