Originally Posted by larry badiner
ive noticed that in my own garden, what I think its:
sativa = needs less water
indica = needs more water than sativa
rudealis = ? will score some af's later as a houseplant
i never took biology but since each plant can be unique there has to be some mathematical equation to grow what I call "the perfect enjoyment"
I have found that sativas want more N than indicas...
Your observation about water is more than likely due to an irrigation calculation factor called roughness. Basically the bigger the leaf and leaf density, the more "roughness", meaning more evaporation from the leaf due to its' size, width, etc, thus the observation you have made, the plant wants more water. The sativa will take longer to dry out as a result.
And I also agree with you completely about the mathematical formula for each variety, not just a grow! In large crops like mandarin oranges, an Okitsu has a very different feeding requirement than an Owari. COMPLETELY DIFFERENT! Cannabis is the same of that I am sure.