scholarly journals Human Cadaver Burial Depth Affects Soil Microbial and Nutrient Status

2018 ◽  
Vol 1 (2) ◽  
pp. 119-125
Author(s):  
Mark Pawlett ◽  
Jane Rickson ◽  
Joanna Niziolomski ◽  
Sophie Churchill ◽  
Michal Kešner
Keyword(s):  
Nutrient Status ◽  
Burial Depth ◽  
Human Cadaver ◽  
Soil Microbial

scholarly journals Effect of biofertilizers on soil microbial count, nutrient availability and uptake under november sown onion

2017 ◽  
Vol 9 (1) ◽  
pp. 55-59
Author(s):  
Dilpreet Talwar ◽  
Kulbir Singh ◽  
Jagdish Singh
Keyword(s):  
Nutrient Availability ◽  
Arbuscular Mycorrhizae ◽  
N Uptake ◽  
Nutrient Status ◽  
Recommended Dose ◽  
Available Phosphorus ◽  
Microbial Count ◽  
Available Nitrogen ◽  
Soil Microbial ◽  
The Impact

Biofertilizers improves the soil microbial content, Soil nutrient status and nutrient uptake by plant. In an experiment, fifteen treatments comprised of various combinations of biofertilizers, organic manures and chemical fertilizers were compared to access the impact of different sources of nutrient on performance of onion. The highest soil organic carbon (0.40%) was observed in the treatments T12 (Farm Yard Manure (FYM) @ 20 t/ha) and T11 (FYM myctes count (29.9 X 104) was recorded in T11 (FYM @ 20 t/ha + Azotobacter + VAM) treatment while highest fungal @ 20 t/ha + Azotobacter + Vesicular-Arbuscular Mycorrhizae (VAM)). Highest bacterial (24.5 X 106) and actino-count (17.5 X 103) was observed in T3 (Azospirillium+ Recommended dose of NPK) treatment. At the time of harvesting, available nitrogen (N), available phosphorus (P) and available potassium (K) were higher in treatment T3 (Azospirillium + Recommended dose of NPK), T9 (Azotobacter+ VAM + Recommended dose of NPK) and T13 (Poultry treatment (162.6 Kg ha-1) as compared to all other treatments except T1 and T9 treatments while P uptake (13.6 Kg ha-Manure @ 5t/ha) treatments respectively than that in other treatments. Azospirillum and Azotobacter application along with recommended dose of N, P and K improved the fertility status of soil. The N uptake was significantly higher in T3 treatments. The present study highlights the need of use of biofertilizers along with organic and inorganic 1) was significantly higher in T9 treatment than that in other treatments except T1, T3, T5 and T7 treatments. The K uptake was significantly higher in T3 treatment (126.9 Kg ha-1) as compare to all other treatments except T1 and T9 manures/fertilizer to enhance the nutrient availability and improve soil health.

scholarly journals Effects of Amendments on Soil Microbial Diversity, Enzyme Activity and Nutrient Accumulation after Assisted Phytostabilization of an Extremely Acidic Metalliferous Mine Soil

2019 ◽  
Vol 9 (8) ◽  
pp. 1552 ◽  
Author(s):  
Sheng-xiang Yang ◽  
Bin Liao ◽  
Rong-bo Xiao ◽  
Jin-tian Li
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Chemical Properties ◽  
Nutrient Status ◽  
Phosphate Fertilizer ◽  
Soil Microbial Activity ◽  
Mine Soil ◽  
Soil Microbial Diversity ◽  
Functional Rehabilitation ◽  
Soil Microbial

Current criteria for successful phytostabilization of metalliferous mine wastelands have paid much attention to soil physico-chemical properties and vegetation characteristics. However, it remains poorly understood as to how the soil microbial community responds to phytostabilization practices. To explore the effects of amendments on the microbial community after assisted phytostabilization of an extremely acidic metalliferous mine soil (pH < 3), a pot experiment was performed in which different amendments and/or combinations including lime, nitrogen-phosphorus-potassium (NPK) compound fertilizer, phosphate fertilizer and river sediment were applied. Our results showed the following: (1) The amendments significantly increased soil microbial activity and biomass C, being 2.6–4.9 and 1.9–4.1 times higher than those in the controls, respectively. (2) The activities of dehydrogenase, cellulase and urease increased by 0.9–7.5, 2.2–6.8 and 6.7–17.9 times while acid phosphatase activity decreased by 58.6%–75.1% after the application of the amendments by comparison with the controls. (3) All the amendments enhanced the nutrient status of the mine soil, with organic matter, total nitrogen and total phosphorus increased by 5.7–7.8, 3.1–6.8 and 1.1–1.9 times, relative to the mine soil. In addition, there were strong positive correlations between soil microbial community parameters and nutrient factors, suggesting that they were likely to be synergistic. From an economic view, the combination of lime (25 t ha−1) and sediment from the Pearl River (30%) was optimal for functional rehabilitation of the microbial community in the extremely acidic metalliferous mine soil studied.

scholarly journals Soil microbial nutrient constraints along a tropical forest elevation gradient: a belowground test of a biogeochemical paradigm

2015 ◽  
Vol 12 (20) ◽  
pp. 6071-6083 ◽  
Author(s):  
A. T. Nottingham ◽  
B. L. Turner ◽  
J. Whitaker ◽  
N. J. Ostle ◽  
N. P. McNamara ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Elevation Gradient ◽  
Hydrolytic Enzymes ◽  
Nutrient Status ◽  
N Availability ◽  
P Availability ◽  
Total N ◽  
Peruvian Andes ◽  
Soil Microbial ◽  
Microbial Nutrient Status

Abstract. Aboveground primary productivity is widely considered to be limited by phosphorus (P) availability in lowland tropical forests and by nitrogen (N) availability in montane tropical forests. However, the extent to which this paradigm applies to belowground processes remains unresolved. We measured indices of soil microbial nutrient status in lowland, sub-montane and montane tropical forests along a natural gradient spanning 3400 m in elevation in the Peruvian Andes. With increasing elevation there were marked increases in soil concentrations of total N, total P, and readily exchangeable P, but a decrease in N mineralization determined by in situ resin bags. Microbial carbon (C) and N increased with increasing elevation, but microbial C : N : P ratios were relatively constant, suggesting homeostasis. The activity of hydrolytic enzymes, which are rich in N, decreased with increasing elevation, while the ratio of enzymes involved in the acquisition of N and P increased with increasing elevation, further indicating an increase in the relative demand for N compared to P with increasing elevation. We conclude that soil microorganisms shift investment in nutrient acquisition from P to N between lowland and montane tropical forests, suggesting that different nutrients regulate soil microbial metabolism and the soil carbon balance in these ecosystems.

scholarly journals Plant Invasion Has Limited Impact on Soil Microbial α-Diversity: A Meta-Analysis

Diversity ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 112
Author(s):  
Gordon F. Custer ◽  
Linda T. A. van Diepen
Keyword(s):  
Microbial Diversity ◽  
Plant Invasion ◽  
Meta Analysis ◽  
Agricultural Practices ◽  
Nutrient Status ◽  
Trophic Levels ◽  
Ecosystem Change ◽  
Soil Microbial Diversity ◽  
Soil Microbial ◽  
Α Diversity

Plant invasion has proven to be a significant driver of ecosystem change, and with the increased probability of invasion due to globalization, agricultural practices and other anthropogenic causes, it is crucial to understand its impact across multiple trophic levels. With strong linkages between above and belowground processes, the response of soil microorganisms to plant invasion is the next logical step in developing our conceptual understanding of this complex system. In our study, we utilized a meta-analytical approach to better understand the impacts of plant invasion on soil microbial diversity. We synthesized 70 independent studies with 23 unique invaders across multiple ecosystem types to search for generalizable trends in soil microbial α-diversity following invasion. When possible, soil nutrient metrics were also collected in an attempt to understand the contribution of nutrient status shifts on microbial α-diversity. Our results show plant invasion to have highly heterogenous and limited impacts on microbial α-diversity. When taken together, our study indicates soil microbial α-diversity to remain constant following invasion, contrary to the aboveground counterparts. As our results suggest a decoupling in patterns of below and aboveground diversity, future work is needed to examine the drivers of microbial diversity patterns following invasion.

Long-term biosolids application alters the composition of soil microbial groups and nutrient status in a pine plantation

2017 ◽  
Vol 53 (7) ◽  
pp. 799-809 ◽  
Author(s):  
Minhuang Wang ◽  
Jianming Xue ◽  
Jacqui Horswell ◽  
Mark O. Kimberley ◽  
Zhiqun Huang
Keyword(s):  
Nutrient Status ◽  
Pine Plantation ◽  
Soil Microbial ◽  
Microbial Groups ◽  
Biosolids Application

Addition of a volcanic rockdust to soils has no observable effects on plant yield and nutrient status or on soil microbial activity

2012 ◽  
Vol 367 (1-2) ◽  
pp. 419-436 ◽  
Author(s):  
Atefeh Ramezanian ◽  
A. Sigrun Dahlin ◽  
Colin D. Campbell ◽  
Stephen Hillier ◽  
Birgitta Mannerstedt-Fogelfors ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Nutrient Status ◽  
Soil Microbial Activity ◽  
Plant Yield ◽  
Soil Microbial

scholarly journals Effect of Organic and Inorganic Sources of Nitrogen on Yield, Microbial Load and Soil Nutrient Status of Pearl Millet

2021 ◽  
pp. 67-75
Author(s):  
Tharapureddi Bhargavi ◽  
K. Mosha ◽  
M. Martin Luther ◽  
P. Venkata Subbaiah ◽  
N. Swetha
Keyword(s):  
Pearl Millet ◽  
Inorganic Nitrogen ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Microbial Load ◽  
Soil Nutrient Status ◽  
Similar Treatment ◽  
Soil Microbial ◽  
Soil Microbial Population ◽  
The Impact

Soil microbial population and soil nutrient status are important criteria for improving the yields. So this study is conducted with an objective to know the impact of organic and inorganic sources of nitrogen on yield, soil microbial load and nutrient status of the soil in pearl millet. A field experiment was conducted during kharif, 2019 at Agricultural College Farm, Bapatla on sandy soils with eight treatments consisting combined organic and inorganic nitrogen sources. The highest grain yield (2955 kg ha-1), straw (5867 kg ha-1) yield and soil nitrogen status (164.10 kg ha -1) were recorded with 75% Soil Test Based Nitrogen (STBN) + 25% vermicompost + Azospirillum @ 5 kg ha-1 and was followed by statistically similar treatment 100% STBN + Azospirillum @ 5 kg ha-1. Significantly higher microbial load (Bacteria, Fungi and Actinomycetes), P and K status in soil recorded with the treatments where 50% of STBN applied through FYM (50% STBN + 50% FYM + Azospirillum @ 5 kg ha-1), whereas lowest was recorded with chemical fertilizer alone. The combined sources of nitrogen both organic and inorganic fertilizers would be able to improve soil fertility and soil microbial load and finally improve the yields.

scholarly journals Soil Microbial and Nematode Community Response to the Field Application of Recycled Bio-Based Fertilisers in Irish Grassland

2021 ◽  
Vol 13 (22) ◽  
pp. 12342
Author(s):  
Anna Karpinska ◽  
Demi Ryan ◽  
Kieran Germaine ◽  
David Dowling ◽  
Patrick Forrestal ◽  
...  
Keyword(s):  
Soil Health ◽  
Nutrient Status ◽  
Community Response ◽  
Field Application ◽  
Nematode Community ◽  
Nematode Communities ◽  
Soil Microbial ◽  
Nematode Diversity ◽  
Healthy Functioning ◽  
Next Generation Sequencing Ngs

Phosphorus (P) is an essential plant nutrient routinely applied to soils as an agricultural fertiliser, frequently in non-renewable, inorganic forms. Finite reserves and growing demand for agricultural phosphorus mean alternative P resources need to be explored. Recycling-derived fertilisers (RDF) recovered from specific waste streams, using nutrient recovery technologies, have the potential to replace conventional phosphorus fertilisers used in agriculture. Healthy functioning soil microbial and nematode communities are essential players in maintaining soil health and nutrient status. Thus, it is important to assess the responses of these communities to RDF application. We compared soil microbial and nematode communities of conventional fertiliser and RDF treated soil, in the form of struvite and ash, using next-generation sequencing (NGS) technologies in a phosphate-fertiliser replacement value (P-FRV) field trial. Bacterial and nematode communities displayed significant changes under the different P fertilisation treatments, while fungal communities were relatively unaffected. Bacterial diversity was higher among RDF treatments than conventional treatments, while nematode diversity was reduced by one ash treatment. Available potassium and phosphate were the main drivers of bacterial community changes when analysed by canonical correspondence analysis (CCA), while available phosphate alone was the driver of nematode community shifts. Of the RDF, struvite products yielded the highest crop biomass, maintained microbial diversity and were associated with the least disturbed nematode communities.

Evaluation of optimal straw incorporation characteristics based on quadratic orthogonal rotation combination design

2018 ◽  
Vol 156 (3) ◽  
pp. 367-377 ◽  
Author(s):  
Guohua Rong ◽  
Yucui Ning ◽  
Xu Cao ◽  
Ye Su ◽  
Jing Li ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Microbial Community ◽  
Functional Diversity ◽  
Soil Microbial Community ◽  
Enzyme Activities ◽  
Burial Depth ◽  
Orthogonal Rotation ◽  
Microbial Functional Diversity ◽  
Soil Microbial ◽  
Straw Incorporation

AbstractFor straw incorporation, three crucial factors affect the soil microbial community and various enzyme activities: straw length, amount and burial depth. To analyse the individual and interactive effects of these three factors on the soil microbial community and various enzyme activities, 23 treatments with five levels of the three variables (straw length, amount and burial depth) were applied in a quadratic orthogonal rotation combination design. A comprehensive indicator was constructed that could represent soil microbial functional diversity and enzyme activity by determining the weights of measured indicators and using Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). The results indicated that the soil microbiological indicators have a higher criteria weight than soil enzyme activity indicators. The final weight orders of indicators were as follows: Shannon–Weaver > invertase > Shannon evenness > urease > catalase > McIntosh index > Simpson diversity > phosphatase. The soil comprehensive values constructed by the TOPSIS method are reliable. The optimal combination for the improvement of soil microbial functional diversity and enzyme activity was a straw length of 13–24 cm, burial depth of 10–17 cm and straw amount of 370–650 g/m2.

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