For best results, apply wollastonite according to soil test results and agronomic recommendations. Application rates will vary according to plant requirements and soil conditions. Consider soil/media pH as well as calcium and magnesium requirements in addition to silicon supplementation when using this product as part of a balanced fertility program
Add 6 to 10 pounds of wollastonite per cubic yard of soilless mix (1/4 cup per gallon), or enough to adjust the pH of the media into the desired range.
Add 1 cup of wollastonite per meter of row at seeding. Use 2 tsp. to 1/3 cup of wollastonite per plant at transplanting. Top dress plants with 2 tsp. of wollastonite weekly or bi-weekly.
Spring or fall application; incorporation is recommended. Apply at 1.5 to 4 mT/ac. Sandy soils, soils low in organic matter; cucurbits and brassicas will respond to higher rates.
Total Silicon (Si) 24%
Soluble Silicon(AAPFCO 5 day method) 3.6%
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