-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. Soil pH is a measure of the acidity and alkalinity in soils. pH levels range from 0 to 14, with 7 being neutral, below 7 acidic and above 7 alkaline. The optimal pH range for most plants is between 5.5 and 7.0; however, many plants have adapted to thrive at pH values outside this range. knowledge of the soil and the crop is important in managing soil pH for the best crop performance. Soils become acidic when basic elements such as calcium, magnesium, sodium and potassium held by soil colloids are replaced by hydrogen ions.