Kentucky | mhagny - 7/11/2008 08:50
The extreme degree of the purpling makes me think something is wrong beyond P deficiency (and especially since some P was applied). Make sure you don't have any herbicide carryover or injury. Also, check the roots to make sure they're healthy (plentiful in number, white, round, without any damaged sections or lesions). The soil looks a bit sandy, so various types of nematodes could be pruning the roots, which would make the plant deficient in all sorts of nutrients.
Yellowing of lower leaves would likely be N def or Mg def., or perhaps K def.
I'm with you on this one. When I was a rep some years ago, I used to tell customers who showed me the top of the plant that we needed to dig it up to get the full story because we were only looking at half the plant. I've seen compaction and very wet soils make plants look like that too. Herbicide carryover and pH or a combination of problems could be at work. I will say that if herbicides are an issue, you should see the problem greater in overlap areas and less on skips or borders where the outside nozzle edge gets a half rate. |
whats up with this milo??
