Blaze
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Wow very nice and my dream of retirement consists of this much work! respect all the work!
If you want to retire and grow, plan to retire, then grow, don't plan on growing to retire, that never seems to work so well from what I've seen. It takes more work than a lot of people seem to think, my garden keeps me busy.
Update on the whole nutrient imbalance issue:
Pic 1 & 2: Ca/Mg foliar only.
Pic 3 & 4: Soil drench of Calcium Nitrate
Pic 5 & 6: Ca/Mg foliar and Calcium Nitrate soil drench.
To me, 3 & 4 look the best, and have had the most new growth, followed by # 5 & 6 which tells me it was definitely primarily N burn due to ammonium toxicity as I suspected.
I did a three step plan to help correct the problem, here is what seemed to work the best out of what I tried:
Top dressed with 1 cup of gypsum per 30 gallon pot and watered in thoroughly. Gypsum facilitates the leaching of ammonium by binding the ammonium to the sulfate in the gypsum, making it highly soluble, and able to flush out of the media more easily. I followed up with a 50 PPM per gallon (1 gram per gallon) solution of Calcium Nitrate. I know it sounds counter-intuitive to apply nitrogen to correct nitrogen burn but the science behind it is sound. The nitrate nitrogen replaces the excess ammonium nitrogen at the cation exchange sites in the soil, alleviating symptoms - the process is known as nitrate dependent alleviation of toxicity in the horticulture industry. I followed up the next day with a bacterial dominant aerated compost tea to encourage the nitrifying bacteria which will eat up any excess nitrogen plus it helps in general with stress and getting the soil food web back in balance.
Hopefully all the rest of the plants will respond to this as well as the 6 testers I tried it on, and get things all back on track. I am already later than I would like to see with the light dep, loosing more time would be annoying. At least we had a tasty dinner tonight: Organic Coriander cured pork tenderloin, with cherry sauce, served over wild rice, and a salad of mixed greens, Charentais melon, avocado, sunflower seeds, and feta cheese. Even got around to making a dessert today too - a blueberry peach crumble. The first of the melons and stone fruit are starting to come into season here, looking forward to cooking lots of tasty summer recipes, the frozen or out of season fruit just doesn't cut it, especially with peaches....