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The
FI-MM Sensor enables to monitor growth of medium size fruits as well as
variations of their diameter in submillimeter range. Two phenomena affect
diurnal behavior of fruit diameter: growth and water balance of a plant. A
growth component is dominant in most of cases (see Fig.1 below). However,
some fruits may loose water or decelerate their growth in result of water
stress, lack of light or other negative factors(see Fig. 2 below). Two
characteristics of the daily fruit growth curve are to be noted: a diurnal
form and daily maximums trend that is growth rate). Thus, the FI-MM sensor
allows investigating intimate effects of environmental factors on water
balance and growth of fruits.
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| Fig 1.
Typical record of a vine tomato sigmoid growth curve made with the
use of FI-MM sensor. |
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| Fig 2.
Temporary depression of tomato growth (green curve) caused by
lack of light (blue curve). |
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The FI-M Fruit Sensor includes a LVDT-based sensor mounted on
special clip and a dc powered LVDT signal conditioner with optional power
adapter for unipolar power supply. |
