If we understand plant energy then it will help us to understand why plant gives more fruit, flower,leaf color or less fruit, flower,leaf color and what it is problem: nutrient deficiency, light, air, water, temperature deficiency or disease problem or growth problem or others problem. Genetic problem and age factors, environmental factors also we can identify. We should take different parameters for different condition and we will compare it with optimum species. It will different from species to species.

We know plant absorb light, air, water, nutrient and others factors. But everyday those absorb elements velocity will not same. There is stress condition, sun matters and others. So absorb elements velocity should be changeable.please See Attachment For Equation