Generic Materials Search: phosphate rock
2 items found.
View the OMRI Generic Materials List Glossary in PDF format here.
Click on the arrow or the material name to view more details about each material.
Calcium – nonsynthetic
Allowed with Restrictions
Livestock Feed Ingredients, Livestock Health CareNonsynthetic
May be supplied by: calcite, chalk, rock, ground clam shells, gypsiferous shale, ground limestone, dolomitic limestone, oyster shell flour, ground phosphate rock, soft phosphate rock, or shell flour. May not be fed in amounts above those needed for adequate nutrition and health maintenance for the species at its specific stage in life.
205.237(a) & 205.237(b)(2)
Crop Fertilizers and Soil AmendmentsNonsynthetic
Must not be fortified or processed with synthetic chemicals. Includes colloidal phosphate rock. See also MINED MINERALS – UNPROCESSED.
205.203(d)(2) A mined substance of low solubility.