Some of my plants are turning yellow on the top...Mostly peppers...This is a 4' x 16' container garden...It is new this year...I got a load of mushroom manure and mixed it with pro mix...Two things could of happened here but I thought I would get you guys and gals opinion first before trying a remedy...1st. When I was trying to alter my PH I was reading the meter wrong...Now I'm a little high...Between 6.8 to 7.5 in diferat places...I don't know how accurate those meters are but it was a $10.00 one...I am gonna get a chemical test kit...2.nd...When I planted my peppers a put a teaspoon of epsom salts in the whole...That seamed to be ok...Then when the peppers got about 8 inches tall I forgot I put the salt in the whole and bought some organic solutions epsom salt with potassium in it wanting to put some potassium in the ground...I know I can't beleive I forgot at planting...Bad day...What do you think and how do I remedy it...Thanks for the help..
Throw your testers out and don't buy any more inexpensive ones since they are not very reliable, or accurate. Yellowing is caused by many things and many nutrients, a shortage or excess of one micro nutrient can cause a plant to exhibit chlorosis, which is why it is never a food idea to simply add "something" in hopse it will help growth. The first year of any soil like you mixed will probably show nutrient deficiencies because the soil bacteria are not yet functioning as they should, but you need to determine what it was that you added that caused this chlorosis.
The specifics of how the plants are turning yellow is the key to what's going on in your soil or if it's bugs or a disease.
Are the veins yellow, are there blotches, are the leaves curling, are the edges scorched looking. Here's a good chart that tells you what they all indicate:
Thanks guys...I checked the leaves good...The veins are green but the leaves are yellow...Some plants the leaves are curling under...Some plants had tiny white bugs on the underside leaves...I sprayed with a organic pestiside on top and moatly under the leaves...I have pictures if anybody would want to look...thanks again for everything guys... rocky
Tiny white bugs could be aphids, easily controlled by washing them off with a sharp water spray, whiteflies, but they would fly up and around, and these are fairly easily controlled with the insecticidal soap. Magnesium deficiency would be indicated by light green veins and stunted plant growth. A Nitrogen deficiency could be the leaf, except for the veins, yellowing, stunted growth, or sometimes the older plant leaves yellowing because the N is being drawn out to support plant growth, but the presence of wee white bugs indicates maybe an excess of N, too.
