Review and Progress
Microclimatic modification in crops-a review
KRISHNA SURENDAR KARUPPASAMY
Regional Research Station, Tamil Nadu Agricultural University, Paiyur, Krishnagiri District, Tamil Nadu, India
Plant Gene and Trait, 2016, Vol. 7, No. 14
Received: 25 May, 2016 Accepted: 30 Jun., 2016 Published: 21 Nov., 2016
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Micro climate is the climate of small area that results from the way the geometry or physical properties of those areas modify the general climate. It differs from macro climate, which prevails above the first few meters over the ground, primarily in the rate at which changes occur with elevation and with time. Whether the surface is bare or vegetated, the greatest diurnal range in temperature experienced at any level occurs there. Temperature changes drastically in the first few ten of millimeters from the surface in to the soil or into the air. Changes in humidity with elevation are greatest near the surface. Very large quantities of energy are exchanged at the surface in the processes of evaporation and condensation. Wind speed decreases markedly as the surface is approached and its momentum is transferred to it. Thus it is the greatest range in environmental conditions near the surface and the rate of these changes with time and elevation that make the microclimate so different from the climate just a few meters above, where atmospheric mixing processes are much more active and the climate is both moderate and more stable.
Microclimate; Crop geometry; Temperature; Wind speed
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