[PDF] Top 20 The changes in microbial biomass C and N in long term field experiments
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The changes in microbial biomass C and N in long term field experiments
... (e.g. n, P, and S) (Smith and Paul 1990). it was shown that microbial bio- mass n contributes to the primary n source of potentially mineralizable n in soil (Bonde et ...1988). n ... See full document
7
Soil pH changes in long term field experiments with different fertilizing systems
... ammonium nitrate, urea or anhydrous ammonia, the formed nitrate requires the same amount of compensating cations per unit of N applied. This requirement is theoretically 1.36 kg Ca/kg N (Gas- ser 1973). ... See full document
5
The turnover of organic carbon in subsoils. Part 1. Natural and bomb radiocarbon in soil profiles from the Rothamsted long-term field experiments
... the C or N contents of soils from Park Grass that had been kept air-dry in bottles for 32 years, making it likely that changes in the total C and N contents of our stored samples were ... See full document
12
Ca. Nitrososphaera and Bradyrhizobium are inversely correlated and related to agricultural practices in long-term field experiments
... Station long-term ecological research project, was initiated to examine the basic ecological relationships in field-crop ecosystems typical of the Midwestern ...affect microbial taxa at these ... See full document
13
Long term field experiments – museum relics or scientific challenge?
... different long-term trials contributes to a better understanding and forecast- ing of long-term effects of cultivation changes on the substance dynamics in the soil-plant-system as well ... See full document
8
Evaluating of soil sulfur forms changes under different fertilizing systems during long term field experiments
... the changes of different soil sulfur forms during long-term field experiments supplied with sewage sludge (SS), farmyard manure (FYM) or mineral ...of changes in water ... See full document
8
Changes in soil microbial biomass with manure application in cropping systems: A meta-analysis
... in microbial biomass in arable soils relative to unmanaged ecosystems are often observed because of the decreases in plant C input and hence C availability in agricultural systems (Fierer et ... See full document
12
Aliphatic compounds, organic C and N and microbial biomass and its activity in long term field experiment
... a long time in the soil organic matter. The ratio C to N provides information on the capacity of the soil to store and recycle ...The C/N ratio of soils is approximately 10 to 1 and ... See full document
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Soil freezing effects on a grass-dominated old field ecosystem under current and future rates of atmospheric nitrogen deposition
... ecosystem N cycling may combine or interact with increased atmospheric N deposition, which is also expected to exert a strong influence on terrestrial ecosystems in the coming ...induced changes in ... See full document
150
The influence of organic and mineral nitrogen fertilizers on microbial biomass nitrogen and extractable organic nitrogen in long term experiments with maize
... soil. Microbial processes are an integral part of the functions of ecosystems connected with nutri- ent cycling, fertilization and organic matter transforma- ...bial biomass and microbial activity ... See full document
5
Long-term changes in the abundance of flying insects
... that changes in aerial arthropod abundances, as reflected in suction trap sam- ples, are related to regional changes in farmland ...in biomass is related to a general increase in the use of pesticides ... See full document
11
Long Term Exclusion of Grazing Increases Soil Microbial Biomass but Not Diversity in a Temperate Grassland
... The results of phylogenetic analysis of all clone se- quences indicated that soil bacterial communities were dominated by the groups of Actinomycetes, Proteobacte- ria and Bacteroidetes. The group of Actinomycetes was ... See full document
8
Over 150 Years of Long Term Fertilization Alters Spatial Scaling of Microbial Biodiversity
... has long been an agricultural practice to increase the net primary productivity of ...that N fertilization has significant impacts on microbial diversity and activity (18–20), but the im- pacts of ... See full document
9
Long-term Impacts of Silvicultural Treatments on Soil Microbial Biomass, Community Composition, and N Mineralization
... kg N ha -1 (Tew et al., 1986) and subsequent studies examining N at the site showed that surface soil net N mineralization rates peaked during the first two years following treatments and have ... See full document
56
Rothamsted Long-term experiments : guide to the classical and other long-term experiments, datasets and sample archive
... the experiments, including plans, soil maps, details of fertiliser and manure treatments, management, photos, methods of analysis, site details and case ...the experiments, and ensuring that the results are ... See full document
61
Soil microbial biomass dynamics in grassland and agroecosystem receiving varying resource quality soil inputs in dry tropics
... year field experiments were conducted to evaluate the effect of land use conversion and management strategies variation through addition of varying resource quality soil inputs on soil microbial ... See full document
14
Setting priorities for land management to mitigate climate change
... lower C stocks than ...soil C stocks by 50% as compared to the refer- ence of food wheat. This soil C loss is higher than the C gain in long-term agricultural experiments ... See full document
18
The Fluxes of Organic C and N, and Microbial Biomass and Maize Yield in an Organically Manured Ultisol of the Guinea Savanna Agroecological Zone of Nigeria
... of microbial immobilisation, clay fixation, denitrification and ammonia volatilisation in determining soil mineral N dynamics following organic amendment has been ...mineral N as observed in the ... See full document
13
The design and analysis of long-term rotation experiments
... these experiments, with new replicates of the rotations starting in successive years so that once a complete cycle has taken place, comparisons can be made between the rotations in every subsequent ...1-yr ... See full document
15
The norm of long-term changes in the total water supply in river basins
... of long-term changes in the total water supply in river basins? As demonstrated in the research articles [8, 9], the fractal dimension of the annual long-term runoff series in the ... See full document
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