All references provides a thermal imaging process during the period of 1:00 PM until the 3:00 PM, and during a period of no more than an hour are the imaging process why .and what is a scientific explanation thank you
The first two answers provided address the primary reason. In general, this is when there is peak sunlight that correlates or relates strongly to photosynthesis, as well as other factors such as plant stress.
dear ahmed,
the reason this time is that the sun rays are entering perpendicular to the planet earth, a situation that allows for greater reliability in the determination of temperature without wome can determine the best time of reading, performing a temperature curve along the day and based on this information to determine the optimal range for determination, added to a correlation with parameters of gas exchange.
I presume you meant by taking images close to a plant by an hand camera. Remote sensing uses standard hours for avoiding low angle fakes like neihbour rows and scattered radiation. In case of hand cameras there is the custom to relate IRR to midday water potential in any anomaly in leaf temperature but 3 Pm is not middday. In any case you should have control parcels without the problem you intend to apply for
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