Biotic stress | Abiotic stress |
1. Biotic stress include living organism. e.g. insect; pest, bacteria, fungi etc. | 1. Abiotic stress include physical factor: of environment. e.g. Temperature, moisture, wind, soil salinity, and alkalinity, etc. |
2. The effect of biotic stress is changeable. | 2. The effect of abiotic stress is stable. |
3. The effect of biotic stress is density-dependent. | 3. Density independent. |
4. Directly related to stress. | 4. Indirectly related to stress. |
5. Generally man cannot control it. e.g. High temperature beyond the control of stress. | 5. Generally man can control it such as spraying, insecticides in case of insect. |