Vauxhall, Alberta, Canada | Yeah I don't see it as a way to determine nitrogen in season. I see it as a way to evaluate the fertilizer program and help decide if a rescue treatment is needed.
We do petioles for 6 weeks or so to get a trend because there are always odd weeks that don't make sense or things that happen that confound the results.
For me, if I can just get a number to put to what I'm seeing that will help. At least then rather than going by colour or what you think you see you can put something to it. |
Anyone use Trimbles hand held green seeker?
