Originally Posted by
Woody J
I actually think there are 2 groups of people who get the yellowing with BB nutrients.
I use Bio Bizz in my soil grows and have not often had the early yellowing but I do use JI composts. WHen I have used light mixes and started feeding the BB earlier, I dont get any yellowing, when I rely on the nutes within the soil, I get yellowing.
This is one group, those who rely on the soils nutes and dont feed early enough.
Because BB has to be converted into a form of nutrition plants can take up, starting to feed a little later may mean there just isnt enough N in the soil to cover during the stretch.
The other group is in the lockout camp.
Those in hard water area's, where there is lots of calcium in the water will see early yellowing as the Mg gets locked out by too much Calcium.
This may show as either yellowing or Mg def.
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