Fractionation of Cu, Zn and Fe within the plant–soil environment

2006 ◽  
Vol 70 (18) ◽  
pp. A97
Author(s):  
J.B. Chapman ◽  
K. Peel ◽  
T. Arnold ◽  
J.J. Wilkinson ◽  
B.J. Coles ◽  
...  
Keyword(s):  
Soil Environment ◽  
Plant Soil

scholarly journals Removal of Soil Microbes Alters Interspecific Competitiveness of Epichloë Endophyte-Infected over Endophyte-Free Leymus chinensis

2020 ◽  
Vol 8 (2) ◽  
pp. 219
Author(s):  
Hui Liu ◽  
Jing Chen ◽  
Tianzi Qin ◽  
Xinjian Shi ◽  
Yubao Gao ◽  
...  
Keyword(s):  
Interspecific Competition ◽  
Competitive Ability ◽  
Soil Microbes ◽  
Leymus Chinensis ◽  
Competitive Advantages ◽  
Soil Environment ◽  
Plant Soil ◽  
Epichloë Endophytes ◽  
Colonization Rates ◽  
Epichloë Endophyte

Epichloë endophytes may not only affect the growth and resistances of host grasses, but may also affect soil environment including soil microbes. Can Epichloë endophyte-mediated modification of soil microbes affect the competitive ability of host grasses? In this study, we tested whether Epichloë endophytes and soil microbes alter intraspecific competition between Epichloë endophyte-colonized (EI) and endophyte-free (EF) Leymus chinensis and interspecific competition between L. chinensis and Stipa krylovii. The results demonstrated that Epichloë endophyte colonization significantly enhanced the intraspecific competitive ability of L. chinensis and that this beneficial effect was not affected by soil microbes. Under interspecific competition, however, significant interactions between Epichloë endophytes and soil microbes were observed. The effect of Epichloë endophytes on interspecific competitiveness of the host changed from positive to neutral with soil microbe removal. Here higher mycorrhizal colonization rates probably contributed to interspecific competitive advantages of EI over EF L. chinensis. Our result suggests that Epichloë endophytes can influence the competitive ability of the host through plant soil feedbacks from the currently competing plant species.

Evidence for ecological matching of whole AM fungal communities to the local plant–soil environment

Ecology ◽  
2010 ◽  
Vol 91 (10) ◽  
pp. 3037-3046 ◽  
Author(s):  
Baoming Ji ◽  
Stephen P. Bentivenga ◽  
Brenda B. Casper
Keyword(s):  
Fungal Communities ◽  
Soil Environment ◽  
Plant Soil ◽  
Local Plant

Empirical model approach for the evaluation of pH and conductivity on pollutant diffusion in soil environment

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Mathematical Model ◽  
Quadratic Equation ◽  
Diffusivity Coefficient ◽  
Soil Environment ◽  
Irreversible Reaction ◽  
Chemical Pollutant ◽  
The Mathematical Model ◽  
Coefficient Of Diffusion ◽  
Level Of Agreement ◽  
Model Approach

This work is aimed at developing a mathematical model equation that can be used to predict the fate of contaminant in the soil environment. The mathematical model was developed based on the fundamental laws of conservation and the equation of continuity given asand was resolved to obtain a quadratic equation of the form C(X) = DX2+vX+f. The developed equation was then used to fit the experimental data that were obtained from the Physio-chemical analysis of the soil samples which were obtained at various depths; within the vicinity of the H & H Asphalt plant Company, located at Enito 3 in Ahoada West L.G.A, River State, Nigeria. The Experimental and Model results obtained from the Calculation and Simulation of the developed models were compared numerically and graphically as presented in this work. It was observed that there is reasonable level of agreement between the three results. The polynomial of the curve was established to ascertain the validity of the model; this was done for all the parameters that were analyzed. From the findings the model developed can be used to predict the concentration of a chemical pollutant at various depths. The reliability of the model developed was established giving the fact that through this quadratic equation the diffusivity (coefficient of diffusion), the water velocity and the irreversible reaction decay rate could be determined.

ALLELOPATHIC EFFECTS OF PARTHENIUM HYSTEROPHORUS ON GERMINATION OF SORGHUM SEEDS

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Jitendra Rajpoot
Keyword(s):  
Biological System ◽  
Growth And Development ◽  
Plant Virus ◽  
Evolutionary Origin ◽  
Plant Interactions ◽  
Biological Organization ◽  
Plant Soil ◽  
System A ◽  
Allelopathic Effects ◽  
Plant Plant

International Allelopathy Society has redefined Allelopathy as any process involving secondary metabolities produced by plants, algae, bacteria, fungi and viruses that influences the growth and development of agricultural and biological system; a study of the functions of secondary metabolities, their significance in biological organization, their evolutionary origin and elucidation of the mechanisms involving plant-plant, plant-microorganisms, plant-virus, plant-insect, plant-soil-plant interactions.

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