Fertilizer blues

Dead tomato plants from a frost.

I have been having trouble with the fertility on the vegetables in the trial gardens. I haven't quite worked out how much to apply. Growing organically is so different from conventional growing in terms of fertility. I am having trouble adjusting to it. Conventionally you just apply some fertilizer over the top or in a band next to the plants and they respond. I have been apply organic fertilizers and it take a while for the plants to pick up the nutrients. It seems so much slower. I can tell that the plants are nutrient starved in the trial garden, but the amounts that I put on don't seem to do much. The amounts that I apply with an organic 6-2-4 would fry conventionally grown plants with the same amounts of synthetic fertilizer. I was getting concerned about my transplants not growing fast enough so I applied more fertilizer over the top. I happened to do this the day before the frost came. I have lost a bunch of my tomato plants. I thought that it was the fertilizer but I checked with my EC meter and the levels look fine. An EC meter is a great tool to check your fertility level. It stands for electrical conductivity meter. It measures the amount of soluble salts present in solution. There are different ways to measure it. I use a one part growing media to two parts water, stir it up, and let it sit for about 5 minutes, strain the water off, and put it in the meter and measure the results. Results of 0-0.5 are too low. 0.5-1.5 is acceptable, and 1.5 or greater is high in fertility. If it is too high it may burn your plants. Meters are fairly cheap and a great way to keep things in the right range. My transplants were 1.0 which is within a good range. So I guess the frost did more damage than I thought. It measured 39 F. but there was frost on the plants. I guess I need to get over the cringing feeling when I apply organic fertilizers. I always feel that I am going to burn the plants. I am learning that the soluble salt levels are lower in organic fertilizers and I can apply a larger amount without problems.