If you are an organic grower and are new to using feathermeal or seed meals you are in for a pleasant surprise. If your garden is small and needs to be very productive you will be delighted with the response. In this photo, you can see how a generous application of nitrogen (along with some boron and gypsum – calcium sulfate, for the sulfur) can change a garden:
Both Veronica Broccoli plants were grown in mineral balanced soil, but the plant on the left received a fall application of feathermeal, gypsum, and boron. ALL the minerals need to be present for great results.
Climate plays a big part in how much organic matter can be built up in the soil. Soils have a natural soil organic matter percentage that they tend toward. It is very difficult to maintain high soil organic matter in an irrigated soil in a hot desert climate. And it is relatively easy to build up organic matter in a cool climate with a long winter. In areas where nitrogen is easily leached or lost to the atmosphere, it’s like the meter is running. If nothing is planted, the nitrogen may just go away.