Quote:
Originally Posted by AKmark
Your question is almost impossible to determine without a soil sample. As PH mentioned, the 4-18-38, 2.27 recommendation is for soil-less, and I will add that the high EC is for Dutch varieties which can tolerate more N. We get the last 200 PPM with KNO3, heirlooms do not like the high N that comes with getting our EC's to 2.27. With that said, you will most likely fry your soil grown tomatoes with that high od an EC.
I usually use about a half strength (in soil) of the same blend, and it is still too strong for some varieties.
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Mark, even though they don't supposedly like it, do you still go with Dutch rates on your heirlooms? I'm sure we've covered this before, but wanted to clarify. I'll be dialing in my injector this weekend, and want to have a plan for how I will step things up once I get through the seedling rate. First blossoms will probably open today.