Generic Materials Search: compost

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21 items found.

View the OMRI Generic Materials List Glossary in PDF format here.
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Bioplastics
Prohibited
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Synthetic
Includes food waste utensils such as cups, plates, forks, etc, biodegradeable mulches, waste bags, diapers, packaging, etc. Compostable and biodegradeable products. See also COMPOST entries.
Cardboard
Allowed with Restrictions
Crop Fertilizers and Soil Amendments, Crop Pest, Weed, and Disease Control
Synthetic
Cardboard that is not waxed or impregnated with synthetic fungicide may only be used as mulch for weed control or as compost feedstock. See also PAPER.
205.601(b)(2)(i) As herbicides, weed barriers, as applicable… Mulches… Newspaper or other recycled paper, without glossy or colored inks.
Cardboard, Fungicide Impregnated
Prohibited
Crop Fertilizers and Soil Amendments
Synthetic
Fungicide impregnated cardboard is prohibited for use as a mulch or compost ingredient.
205.105(a)
Compost
Prohibited
Crop Fertilizers and Soil Amendments
Nonsynthetic
Compost that contains the following is prohibited: sewage sludge, synthetically fortified compost starter, glossy paper, and materials containing colored ink. Compost is prohibited if it contributes to the contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances. See also MICROBIAL PRODUCTS listings for information on compost starters, SEWAGE SLUDGE, and MUSHROOM COMPOST. See Glossary for definition of "compost."
205.203(c) & (e)
Compost Inoculants
Allowed
Crop Management Tools and Production Aids
Nonsynthetic
205.105
Compost Tea
Allowed with Restrictions
Crop Fertilizers and Soil Amendments, Crop Pest, Weed, and Disease Control
Nonsynthetic
Compost tea used as a fertilizer or soil amendment is subject to the same restrictions as raw, uncomposted manure. It may only be (i) applied to land used for a crop not intended for human consumption; (ii) incorporated into the soil not less than 120 days prior to the harvest of a product whose edible portion has direct contact with the soil surface or soil particles; or (iii) incorporated into the soil not less than 90 days prior to the harvest of a product whose edible portion does not have direct contact with the soil surface or soil particles. See also MANURE – RAW, UNCOMPOSTED; COMPOST – IN-VESSEL OR STATIC AERATED PILE (PLANT AND ANIMAL MATERIALS); COMPOST TEA; and MANURE TEA. Compost tea made on the farm may be used to suppress the spread of disease organisms. Compost tea sold for disease suppression must comply with all pesticide regulations. See Glossary for definition of "compost tea."
205.203(c) & 205.206(d)(2)
Compost Tea
Prohibited
Crop Fertilizers and Soil Amendments
Nonsynthetic
Compost tea or extract that uses sewage sludge, prohibited synthetic nutrient sources, or other prohibited materials is prohibited. See COMPOST – IN-VESSEL OR STATIC AERATED PILE (PLANT AND ANIMAL MATERIALS); COMPOST TEA – RESTRICTED; MANURE – RAW, UNCOMPOSTED and MANURE TEA. See Glossary for definition of "compost tea."
205.105(g) & 205.203(c)(e)
Compost – in-vessel or static aerated pile (plant and animal materials)
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Plant and animal materials are composted through a process that establishes an initial C:N ratio of between 25:1 and 40:1 and maintains a temperature of between 131°F and 170°F for 3 days using an in-vessel or static aerated pile system. Acceptable feedstocks include, but are not limited to: animal manure, by-products of agricultural commodities processing, and source-separated yard debris or "clean green." Compost must not contain more than 1x10³ (1,000) MPN fecal coliform per gram of compost sampled and must not contain more than 3 MPN Salmonella per 4 grams of compost sampled. See Glossary for definition of "compost."
205.203(c)(2)(i) & (ii) Composted plant and animal materials.
Compost – other (plant and animal materials)
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Compost is acceptable if (i) made from only allowed feedstock materials; (ii) the compost undergoes an increase in temperature to at least 131ºF (55ºC) and remains there for a minimum of 3 days; and (iii) the compost pile is mixed or managed to ensure that all of the feedstock heats to the minimum temperature for the minimum time. Compost must not contain more than 1x10³ (1,000) MPN fecal coliform per gram of compost sampled and must not contain more than 3 MPN Salmonella per 4 grams of compost sampled. This does not include Compost Tea. See other COMPOST listings. See Glossary for definition of "compost."
205.203(c)(2)
Compost – plant materials
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Compost is acceptable if (i) made from only allowed feedstock materials; (ii) the compost undergoes an increase in temperature to at least 131ºF (55ºC) and remains there for a minimum of 3 days; and (iii) the compost pile is mixed or managed to ensure that all of the feedstock heats to the minimum temperature for the minimum time. Compost that contains no animal materials as feedstock may be used without restriction provided that it contains no prohibited or restricted-use plant materials. Acceptable feedstocks include, but are not limited to, by-products of agricultural commodities processing, and source-separated yard debris or "clean green." Compost made from plant material can become contaminated with fecal matter. Compost that contains more than 1x10³ (1,000) MPN fecal coliform per gram of compost sampled or more than 3 MPN Salmonella per 4 grams of compost sampled will result in a reclassification as ‘manure – uncomposted.’ See also MICROBIAL PRODUCTS listings for information on compost starter, SEWAGE SLUDGE and COMPOST – PROHIBITED. See Glossary for definition of "compost."
205.203(c)
Compost – windrow (plant and animal materials)
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Plant and animal materials are composted through a process that establishes an initial C:N ratio of between 25:1 and 40:1 and maintains a temperature of between 131°F and 170°F for 15 days, during which period the composting materials must be turned a minimum of five times. Acceptable feedstocks include, but are not limited to, animal manure, by-products of agricultural commodities processing, and source-separated yard debris or "clean green." Compost must not contain more than 1x10³ (1,000) MPN fecal coliform per gram of compost sampled and must not contain more than 3 MPN Salmonella per 4 grams of compost sampled. See also MICROBIAL PRODUCTS for information on compost starters, other COMPOST listings, SEWAGE SLUDGE, and MUSHROOM COMPOST. See Glossary for definition of "compost."
205.203(c)(2)(i) & (iii) Composted plant and animal materials.
Fertilizers, Blended
Allowed with Restrictions
Crop Fertilizers and Soil Amendments
Synthetic/Nonsynthetic
Fertilizers are restricted if the liquid or solid product contains one or more restricted plant or animal materials as an ingredient. Must not contain prohibited materials including pathogenic organisms, heavy metals, or residues of prohibited substances. Blending and manufacture cannot result in a chemical reaction that is considered synthetic, unless specifically provided for on the National List. See listings for each ingredient. For products containing manure, see MANURE – RAW, UNCOMPOSTED and COMPOST listings.
205.203(d)
Guano – bat or bird
Allowed with Restrictions
Crop Fertilizers and Soil Amendments
Nonsynthetic
Must be decomposed and dried deposits from wild bats or birds. Domesticated fowl excrement is considered manure, not guano. Must meet requirements for MANURE – RAW, UNCOMPOSTED. See the COMPOST listings for the definition of compost.
205.203(c)(1)
Microbial Inoculants
Allowed
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Nonsynthetic
Organisms that are used to inoculate compost, plants, seeds, and soils, such as actinomycetes, rhizobial bacteria, and mycorrhizal fungi, Azolla, yeast, and other microorganisms. May not be derived from genetically modified organisms. See also MICROBIAL PRODUCTS – ALLOWED.
205.105 & 205.206(d)(2)
Mushroom Compost
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Mushroom media waste (see MUSHROOM MEDIA WASTE listings) that has been composted according to §205.203(c)(2) either before mushroom production or after mushroom production and does not include other, noncomposted materials, is considered “mushroom compost.” See also COMPOST listings.
205.203(c)(2)
Mushroom Media Waste
Allowed
Crop Fertilizers and Soil Amendments
Nonsynthetic
Must be composed of Allowed materials. See also MUSHROOM COMPOST for mushroom media waste that has been composted according to NOP requirements.
205.105
Mushroom Media Waste
Allowed with Restrictions
Crop Fertilizers and Soil Amendments
Nonsynthetic
Waste from mushroom production that contains animal manure that has not been fully composted is subject to uncomposted manure restrictions: may be (i) applied to land used for a crop not intended for human consumption,(ii) incorporated into the soil not less than 120 days prior to the harvest of a product whose edible portion has direct contact with the soil surface or soil particles, or (iii) incorporated into the soil not less than 90 days prior to the harvest of a product whose edible portion does not have direct contact with the soil surface or soil particles. See also MANURE – RAW, UNCOMPOSTED and MUSHROOM COMPOST.
205.203(c)(1)
Newspaper
Allowed with Restrictions
Crop Pest, Weed, and Disease Control
Synthetic
Glossy paper and colored inks are prohibited. Paper may only be used as a mulch or compost feedstock.
205.601(b)(2)(i) & 205.601(c) As herbicides, weed barriers, as applicable… Mulches. As compost feedstocks—Newspaper or other recycled paper, without glossy or colored inks.
Odor Control Products
Allowed
Crop Management Tools and Production Aids
Nonsynthetic
For addition to materials (including compost, fish, manure, water, etc) which may be applied to crops or soil. Must be composed entirely of allowed materials.
Odor Control Products
Allowed
Livestock Management Tools and Production Aids
Nonsynthetic
For use on products which may come into contact with livestock. Must be composed entirely of allowed materials. If used on materials (manure, compost, water, etc) which will be applied to crops or fields, see ODOR CONTROL in Crops section.
Paper
Allowed with Restrictions
Crop Fertilizers and Soil Amendments, Crop Pest, Weed, and Disease Control
Synthetic
Paper may only be used as a mulch or compost feedstock. Must be made from newspaper or other recycled paper, without glossy or colored inks. Mulches may be incorporated into the soil provided that they are fully biodegradable. See also COMPOST listings.
205.206(c)(1), 205.601(b)(2)(i) & 205.601(c) As herbicides, weed barriers, as applicable… Mulches. As compost feedstocks—Newspaper or other recycled paper, without glossy or colored inks.