30-Year effects of wood ash and nitrogen fertilization on soil chemical properties, soil microbial processes and stand growth in a Scots pine stand

2012 ◽  
Vol 278 ◽  
pp. 63-70 ◽  
Author(s):  
Anna Saarsalmi ◽  
Aino Smolander ◽  
Mikko Kukkola ◽  
Mikko Moilanen ◽  
Jussi Saramäki
Keyword(s):  
Scots Pine ◽  
Nitrogen Fertilization ◽  
Chemical Properties ◽  
Wood Ash ◽  
Microbial Processes ◽  
Soil Chemical Properties ◽  
Stand Growth ◽  
Soil Microbial

The invasive potential of a hybrid species: insights from soil chemical properties and soil microbial communities

2019 ◽  
Vol 13 (1) ◽  
pp. 20-26
Author(s):  
Feng Sun ◽  
Yuyi Ou ◽  
Qiaojing Ou ◽  
Lingda Zeng ◽  
Hanxia Yu ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Photosynthetic Rate ◽  
Soil Microbial Communities ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Natural Hybridization ◽  
Total Biomass ◽  
Invasive Potential ◽  
Soil Microbial ◽  
Significant Difference

Abstract Aims Natural hybridization between invasive and native species, as a form of adaptive evolution, threatens biodiversity worldwide. However, the potential invasive mechanisms of hybrids remain essentially unexplored, especially insights from soil chemical properties and soil microbial communities. Methods In a field experiment, soil microbial community, potassium-solubilizing bacteria, phosphorus-solubilizing bacteria, enzyme activities, and light-saturated photosynthetic rate were measured in invasive Sphagneticola trilobata and its hybrid with native Sphagneticola calendulacea in 2 years. Important Findings In general, soil dissolved organic carbon and the biomass of phosphorus-solubilizing bacteria were significantly higher under the hybrid treatment than S. trilobata and S. calendulacea. However, there were no significant differences in acid phosphatase, total PLFAs, bacterial PLFAs, fungi PLFAs, cellulase, and urase in these treatments. The hybrids had significantly higher light-saturated photosynthetic rate, photosynthetic nitrogen-, phosphorus-, potassium- use efficiencies than the invasive S. trilobata, but no significant difference with S. calendulacea. The total biomass and root biomass of hybrids were higher than S. calendulacea. Our results indicate that the hybrids species have a higher invasive potential than S. calendulacea, which may aggravate the local extinction of S. calendulacea in the future.

scholarly journals Complex study of foliage nutrient status in ash fertilized Scots pine stands in Lithuania

2008 ◽  
Vol 54 (No. 5) ◽  
pp. 195-206 ◽  
Author(s):  
I. Varnagirytė-Kabašinskienė
Keyword(s):  
Scots Pine ◽  
Nitrogen Fertilization ◽  
Nutrient Status ◽  
Wood Ash ◽  
Nutrient Composition ◽  
Nutrient Concentrations ◽  
Response Evaluation ◽  
Critical Levels ◽  
Pine Stands ◽  
Scots Pine Stands

In Lithuania, a typical Scots pine stand under the influence of wood ash and nitrogen fertilization, containing different treatments and the control, was analyzed. The study aim was to interpret the foliage and soil analyses, and to find possible indications in the soil-plant relation in the stand. The analyses of the foliage nutrient status in the Scots pine stand when wood ash with/without N was recycled to the forest showed that the significance analyses of changes in the nutrient composition in the soil and needles were the best initial tool for the response evaluation. The comparison of the nutrient concentrations with optimal amounts, critical levels of deficiency or target levels for ratios to N, and applied graphical analyses, could also provide possible indications in the soil-plant relation.

Long-term application of olive-mill wastewater affects soil chemical and microbial properties

Soil Research ◽  
2015 ◽  
Vol 53 (4) ◽  
pp. 461 ◽  
Author(s):  
V. Kavvadias ◽  
M. Doula ◽  
M. Papadopoulou ◽  
Sid. Theocharopoulos
Keyword(s):  
Waste Disposal ◽  
Chemical Properties ◽  
Olive Mill Wastewater ◽  
Soil Chemical Properties ◽  
Microbial Properties ◽  
Evaporation Ponds ◽  
Soil Microbial ◽  
The Impact ◽  
Olive Mill

Disposal of untreated olive-mill wastewater (OMW) is a major environmental problem in many Mediterranean countries. This study assessed the impact of OMW application on soil microbiological properties and explored the relationship to soil chemical properties during a 9-month, periodical soil-sampling campaign in a pilot study area in Crete, South Greece. Cases studied involved: direct application of OMW on soil; OMW disposal in active evaporation ponds; sites hosting evaporation ponds that have been inactive for the past 9 years; sites downstream of active evaporation ponds; and control soils, upstream of the waste-disposal ponds. Long-term OMW disposal on land affected the main soil chemical properties. Applicability of the results from the systematic monitoring was confirmed by results obtained in other OMW disposal sites around the pilot area. Soil microbial properties (microbial activity, microbial biomass carbon, and metabolic quotient) were considerably affected by OMW disposal. Moreover, seasonal changes of soil properties revealed short- and long-term residual effects due to OMW disposal. Significant correlations were observed among soil microbial characteristics and soil chemical properties, clearly indicating a close relationship between chemical properties and the transformation of microbial communities in soil after OMW land spreading. The determination of a key set of chemical and microbiological parameters that can be used as indicators for monitoring soil quality at olive-mill waste-disposal areas will verify the efficiency of the techniques used for the land disposal of OMW and will consequently promote their sustainable management.

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