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  • ENVIRONMENTAL FACTORS AFFECTING AGRICULTURAL PRODUCTION
    AGRICULTURAL SCIENCE

    ENVIRONMENTAL FACTORS AFFECTING AGRICULTURAL PRODUCTION

    MEANING AND ELEMENTS/FACTORS OF CLIMATE Climate is defined as the average weather condition of a place, measured over a long period of time (over 35 years).   Factors of Climate Factors or elements of climate include: Rainfall. Temperature. Wind. Relative Humidity. Pressure. Light. Radiant energy.   Importance of climate in Agriculture Climate affects the duration of a cropping season. It determines the yield of crops. Climate limits the types of crop to be grown in an area. It also affects vegetation distribution in an area. It affects the incidence of pests. It affects the incidence of diseases. Climate determines the yield or productivity of animals. Climate limits the type of…

  • RAINFALL
    PHYSICAL GEOGRAPHY

    RAINFALL

    Rainfall is defined as the release of excess condensed water vapour in the atmosphere into the earth. Rainfall is the most important form of precipitation. On maps, lines used to join places having the same average annual rainfall are called Isoyets. Other forms of precipitation include: Snow: Snow is formed when water vapour condenses in the atmosphere at temperature below freezing point, resulting in the formation of ice crystals. Hail: This is formed from condensed water droplets at great vertical height and usually associated with thunderstorms. Ice crystals are also formed. Dew: Dew is formed when condensation takes place on the ground, buildings or on top of leaves. The temperature…

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