B.Sc.Ag. (Hons) Part-IV
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| Distinguish between Biotic & Abiotic Stress. https://cststudy.blogspot.com |
Distinguish between Biotic & Abiotic Stress
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Biotic stress
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Abiotic stress
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1. Biotic stress include living organism. e.g. insect;
pest, bacteria, fungi etc.
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1. Abiotic stress include physical factor: of environment.
e.g. Temperature, moisture, wind, soil salinity and alkalinity etc.
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2. The effect of biotic stress is changeable.
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2. The effect of abiotic stress is stable.
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3. The effect of biotic stress is density dependent.
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3. Density independent.
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4. Directly related to stress.
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4. Indirectly related to stress.
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5. Generally man cannot control it. e.g. High temperature
beyond the control of stress.
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5. Generally man can control it such as spraying,
insecticides in case of insect.
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