A chemical fertilizer is defined as any inorganic material of wholly or partially synthetic origin that is added to the soil to sustain plant growth. Many artificial fertilizers contain acids, such as sulfuric acid and hydrochloric acid, which tend to increase the acidity of the soil, reduce the soil's beneficial organism population and interfere with plant growth.
Generally, healthy soil contains enough nitrogen-fixing bacteria to fix sufficient atmospheric nitrogen to supply the needs of growing plants. However, continued use of chemical fertilizer may destroy these nitrogen-fixing bacteria. Furthermore, chemical fertilizers may effect plant health. For example, citrus trees tend to yield fruits that are lower in vitamin C when treated with high nitrogen fertilizer. Fungus and bacterial disease resulting from the lack of trace elements in soil regularly dosed with chemical fertilizers is not uncommon. This lack of vital micronutrients can generally be attributed to the use of chemical fertilizers.
On the other hand organic fertilizer such as manure treated with CBPA adds nutrients to soil, increases soil organic matter, improves soil structure and tilth, improves water holding capacity, reduces soil crusting problems, reduces erosion from wind and water, improves water holding capacity and improves buffering capacity against fluctuations in pH levels.
Chemical fertilizer or organic ? we use mixed.