Annotated Bibliography

 Annotated Bibliography  Week 2 

 #1

  Researchers wanted to see if there was a correlation between bacteria diversity in living or sterile soil and how it related to plant growth.   Farm management was said to be more likely to affect bacteria growth then farm location.  Organically farmed living inoculum produced higher microbial diversity.  Soils that received the organic inoculum tended to increase, but not by a large margin.  They did show a decrease in microbial functionality in sterilized soil.  They were also seeing an increase of Nitrogen in living as opposed to sterile.  Phylum Verrucomicrobia(which contains a gene (DNA E2) which is attributes to fit soils was found 2x as present in sterile inoculum than living inoculum.  They also found higher Nitrogen fixers in the sterile compared to the living.  They did find the largest factor to be living or sterile to be the largest determining factor for soil growth.  

Suzanne L. Ishaq1,2 & Stephen P. Johnson2 & Zach J. Miller3 & Erik A. Lehnhoff4 & Sarah Olivo1 & Carl J. Yeoman1 & Fabian D. Menalled (2016) Impact of Cropping Systems, Soil Inoculum, and Plant Species Identity on Soil Bacterial Community Structure, Springer Science+Business Media Online

#2

There was a correlation between the content of available phosphorus and the activity of alkaline phosphates in soil.  The researchers wanted to find out if Nitrogen fertilizers would have any effect on the available phosphorus.  They found the highest increase of Phosphorus in FYM stored in Aerobic conditions.   They attributed it to the breakdown of organic residues and bacteria that could effectively break down the phosphorus.  Lime was also found to be a key ingredient, as it helped to break down the Phosphorus into usable forms.  They did see greater success with alkaline rather then acid phosphates.  They realized that the Ph affected the ability to use the nutrients and determined further studies needed.   

Joanna Lemanowicz*, Anetta Siwik-Ziomek, Jan Koper (2014) How Fertilization with Farmyard Manure and Nitrogen Affects Available Phosphorus Content and Phosphatase Activity in Soil, Pol. J. Environ. Stud. Vol. 23, No. 4, 1211-1217

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