Licorice is in a special category. It has strong antimicrobial properties, but has equally strong immuno-stimulant, and anti-inflammatory properties, so I struggled with writing about it here, where I list natural antibiotics, per se. I might write more about it in the future. Licorice is well documented, and well-studied. It is an immuno-stimulant herb which also has antimicrobial activity. It also augments the effects of other herbs. It is especially good at colds, flus, upper respiratory infections, and aiding in the repair of ulcerations in the gut (esp. the stomach). It can also be used to restore adrenal function (good after a round of prednisone or other steroid), and is known to increase general vitality. Evidence shows that it stimulates the thymus gland, increases white blood cell generation and activity, stimulates interferon activity, and enhances antibody formation. It is also known for its anti-stress and anti-fatigue properties, and there is evidence that it has immunomodulating properties.
Physico- chemical properties of soil: Agricultural use of soil affected its chemical properties . The changes in these properties were associated with the organic and inorganic fertiliser management practices at each plot. Soil from the organic plot showed an increase in organic carbon content ( Table 1 ) compared to other plots, this might be due to the addition of organic amendments as they are the sources of nitrogen and carbon to soils. This agrees with finding from several other researchers, Kumar et al . (2000) found that the organic materials, applied alone or in combination with inorganic fertilizer gave greater residual soil fertility in terms of increase in organic carbon content from to as high as % and the available N, P and K in the 2-years cropping cycle.