The shells of crustaceans have two benefits for biological gardeners. They are largely made of calcium carbonate. There is a bit of phosphorus, nitrogen and magnesium in there- but it is the calcium carbonate they contain that is of value to us. This calcium comes without the extra sulphur, as in gypsum, or the extra magnesium, as in dolomite. This is an important factor for the no till gardener, who wants a continuous calcium supply without the burden of excessive amounts of the other nutrients.
But layered between the calcium layers is a material that is very common in crustacean and insect shells, called chitin. In the form contained within the crab shell itself, chitin is of little benefit. However, as the shell particles are broken down by the soil microbes, the chitin is transformed into chitinase. This material has unique benefits, as it is a natural bio pesticide which boosts the innate ability of plants to defend themselves against fungal infections. In addition, chitosan increases and promotes plant growth, boosts plant vigor and actually destroys cyst nematodes in the root zone without endangering beneficial nematodes and organisms.
This new version has gone through a hammer mill to micronize it into the finest grade possible before being prilled into a nice granular form. If you used our previous product, you know how dusty it was. This prilled format is far less smelly and dusty, and it's easier to handle and spread into your garden without blowing around and getting all over your plants.
Application
Typically for soil building or top dress – ½ cup per cubic foot of soil but you should consult a certified agronomist with regards to crab meal and its application rates specific to your needs.
This product is approved for organic use.
Equivalency Measurement - 12 cups/2 kg
