Properties of organic amendment materials used in California agriculture,
including C:N ratios, carbon and nitrogen content, plant-available nitrogen
(PAN), and application rates. Some materials appear in multiple rows when
values are reported by different sources (e.g. Corn stalks, Cow manure,
Vegetable waste). The source column disambiguates these.
Format
A tibble with 32 rows and the following columns:
- material
character. Amendment material name.- cn_min, cn_max, cn_avg
numeric. Carbon-to-nitrogen ratio range and average.- c_pct
numeric. Assumed carbon content (percent).- n_pct
numeric. Total nitrogen content (percent).- pan_pct
numeric. Plant-available nitrogen after 4 weeks (percent). Negative values indicate N immobilization.- n_class
character. "LOWER" or "HIGHER" N content class.- app_rate_min, app_rate_max
numeric. Application rate range (lbs/acre).- total_c_min_lbs_acre, total_c_max_lbs_acre
numeric. Total carbon applied (lbs C/acre).- total_n_min_lbs_acre, total_n_max_lbs_acre
numeric. Total nitrogen applied (lbs N/acre).- total_c_min_g_m2, total_c_max_g_m2
numeric. Total carbon in SI units (g C/m\(^2\)).- total_n_min_g_m2, total_n_max_g_m2
numeric. Total nitrogen in SI units (g N/m\(^2\)).- source
character. Short citation for the data source.
Source
Eghball, B. Composting Manure and Other Organic Residues. University of Nebraska-Lincoln Extension, Publication G2222. https://extensionpubs.unl.edu/publication/g2222/na/html/view
Rynk, R. (ed.) Compost Production and Use in Sustainable Farming Systems. NC State Extension. https://content.ces.ncsu.edu/compost-production-and-use-in-sustainable-farming-systems
See also
look_up_ca_compost_amendment for looking up
amendments by material name.
look_up_fertilizer_components for fertilizer nutrient
composition (N/C fractions) from the SWAT/DayCent database.