-Viruses are 10 to 100 times smaller than bacteria-Viruses need a living host; bacteria can grow on non-living surfaces-Antibiotics don't work on viruses, because antibiotics interfere with cellular processes that viruses do not perform.Differences Between Bacteria and Viruses are: î î î.Are small DNA fragments-Each fragment carries between 2 and 30 genes-Some plasmids have the ability to move in and out of the bacterial chromosome-Plasmids are not needed for the cell's growth or reproduction, but can cause disease or can protect the bacterium from things like antibiotics.
Check out this page for a simple soil content test. The soil's pH rating is also important. This rating tells you the relative acidity and alkalinity of the soil (this page explains the concept). The ideal pH level is around 6.5 or 7, but levels vary between different grass species and climate conditions. You can find out your soil's pH level with a home test or a professional test. If you need to substantially increase the acid level, add sulfur.
Soil pH is an important chemical property because it affects the availability of nutrients to plants and the activity of soil microorganisms. Soil pH is a measure of the acidity or alkalinity of the soil with a scale of 0 to 14. The neutral point or balance for soil pH would be 7. As the number of the soil pH increases this indicates an increase in soil alkalinity. As the soil pH number decreases this indicates an increase in soil acidity. The ideal pH for most grass types is 6.5 to 7.0. This would be an optimum pH but different grass types can tolerate a range of pH levels -- see our grass species pH chart below. Note that some grass species such as centipede prefer a more acidic soil with pH levels around 5.0 - 5.5 considered optimum.