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209 | 209 |
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210 | 210 | #' California recommended N application rates by crop |
211 | 211 | #' |
212 | | -#' Crop-specific recommended nitrogen fertilizer application rates for |
213 | | -#' California agriculture. Contains total-season rates (not per-stage |
214 | | -#' breakdowns). When multiple sources report rates for the same crop, |
215 | | -#' the rate represents the envelope (min of minimums, max of maximums) |
216 | | -#' across sources. |
217 | | -#' |
218 | | -#' @format A tibble with one row per crop and the following columns: |
| 212 | +#' Recommended nitrogen fertilizer application rates for California crops. |
| 213 | +#' When multiple sources report rates for the same crop the value is the |
| 214 | +#' envelope across sources. Crops reported only as within year stages |
| 215 | +#' (Barley, Beans, Cauliflower, Melons) have stages summed to an annual |
| 216 | +#' total. Crops reported only by age (Almonds) get the envelope across |
| 217 | +#' ages. |
| 218 | +#' |
| 219 | +#' @format A tibble with one row per crop and the columns: |
219 | 220 | #' \describe{ |
220 | | -#' \item{pft_group}{\code{character}. Plant functional type group |
221 | | -#' (e.g. "row", "woody", "rice").} |
222 | | -#' \item{crop}{\code{character}. Crop name as given in the source.} |
223 | | -#' \item{min_n_lbs_acre}{\code{numeric}. Minimum recommended N rate |
224 | | -#' (lbs N/acre).} |
225 | | -#' \item{max_n_lbs_acre}{\code{numeric}. Maximum recommended N rate |
226 | | -#' (lbs N/acre).} |
227 | | -#' \item{source}{\code{character}. Short citation for the source(s). |
228 | | -#' Multiple sources are separated by "; ".} |
229 | | -#' \item{min_n_g_m2}{\code{numeric}. Minimum N rate in SI units |
230 | | -#' (g N/m\eqn{^2}). Conversion: 1 lb/acre = 0.112085 g/m\eqn{^2}.} |
231 | | -#' \item{max_n_g_m2}{\code{numeric}. Maximum N rate in SI units |
232 | | -#' (g N/m\eqn{^2}).} |
| 221 | +#' \item{pft_group}{Plant functional type group: \code{"row"}, |
| 222 | +#' \code{"woody"}, or \code{"rice"}.} |
| 223 | +#' \item{crop}{Crop name as given in the source.} |
| 224 | +#' \item{min_n_lbs_acre, max_n_lbs_acre}{Recommended N rate range |
| 225 | +#' (lbs N / acre).} |
| 226 | +#' \item{source}{Short citation. Multiple sources are joined with |
| 227 | +#' \code{"; "}.} |
| 228 | +#' \item{min_n_g_m2, max_n_g_m2}{Same range in SI units (g N / m\eqn{^2}).} |
233 | 229 | #' } |
234 | 230 | #' |
235 | | -#' @source Rosenstock, T. S., Liptzin, D., Six, J., & Tomich, T. P. (2013). |
| 231 | +#' @source Rosenstock, T. S., Liptzin, D., Six, J., Tomich, T. P. (2013). |
236 | 232 | #' Nitrogen fertilizer use in California: Assessing the data, trends and a |
237 | | -#' way forward. California Agriculture, 67(1). |
| 233 | +#' way forward. California Agriculture 67(1). |
238 | 234 | #' \url{https://escholarship.org/uc/item/5mk2q1sm} |
239 | | -#' @source Meyer, R. D., Marcum, D. B., Orloff, S. B., & Schmierer, J. L. |
240 | | -#' (2007). Alfalfa fertilization strategies. UC ANR Publication 8296. |
241 | | -#' |
242 | | -#' @seealso \code{\link{look_up_ca_n_rate}} for looking up rates by crop name. |
243 | | -#' \code{\link{look_up_fertilizer_components}} for fertilizer nutrient |
244 | | -#' composition (N/C fractions) from the SWAT/DayCent database. |
| 235 | +#' @source Meyer, R. D., Marcum, D. B., Orloff, S. B., Schmierer, J. L. |
| 236 | +#' (2007). Alfalfa fertilization strategies. UC ANR Publication 8292. |
| 237 | +#' @source Brown, P. H. et al. (2020). Nitrogen Best Management Practices |
| 238 | +#' for Almonds. Almond Board of California. Source for Almonds rates by |
| 239 | +#' age. |
| 240 | +#' @source Lazicki, P., Geisseler, D., Horwath, W. R. (2016). Potato |
| 241 | +#' Production in California. CDFA FREP / UC Davis. Source for Potato. |
| 242 | +#' |
| 243 | +#' @seealso \code{\link{look_up_ca_n_rate}}. |
245 | 244 | "ca_n_application_rate" |
246 | 245 |
|
247 | | -#' California organic amendment (compost) properties |
| 246 | +#' California organic amendment properties |
248 | 247 | #' |
249 | | -#' Properties of organic amendment materials used in California agriculture, |
250 | | -#' including C:N ratios, carbon and nitrogen content, plant-available nitrogen |
251 | | -#' (PAN), and application rates. Some materials appear in multiple rows when |
252 | | -#' values are reported by different sources (e.g. Corn stalks, Cow manure, |
253 | | -#' Vegetable waste). The \code{source} column disambiguates these. |
| 248 | +#' Properties of organic amendment materials used in California |
| 249 | +#' agriculture: C:N ratio range, total N, plant available N at 4 weeks |
| 250 | +#' (PAN), and CalRecycle feedstock class (14 CCR section 17852). |
| 251 | +#' Materials reported by more than one source appear once per source; |
| 252 | +#' the \code{source} column disambiguates. Application rates live in |
| 253 | +#' \code{\link{ca_organic_amendment_app_rate}} and join on |
| 254 | +#' \code{material}. |
254 | 255 | #' |
255 | | -#' @format A tibble with 32 rows and the following columns: |
| 256 | +#' @format A tibble with 32 rows and the columns: |
256 | 257 | #' \describe{ |
257 | | -#' \item{material}{\code{character}. Amendment material name.} |
258 | | -#' \item{cn_min, cn_max, cn_avg}{\code{numeric}. Carbon-to-nitrogen ratio |
259 | | -#' range and average.} |
260 | | -#' \item{c_pct}{\code{numeric}. Assumed carbon content (percent).} |
261 | | -#' \item{n_pct}{\code{numeric}. Total nitrogen content (percent).} |
262 | | -#' \item{pan_pct}{\code{numeric}. Plant-available nitrogen after 4 weeks |
263 | | -#' (percent). Negative values indicate N immobilization.} |
264 | | -#' \item{n_class}{\code{character}. "LOWER" or "HIGHER" N content class.} |
265 | | -#' \item{app_rate_min, app_rate_max}{\code{numeric}. Application rate range |
266 | | -#' (lbs/acre).} |
267 | | -#' \item{total_c_min_lbs_acre, total_c_max_lbs_acre}{\code{numeric}. |
268 | | -#' Total carbon applied (lbs C/acre).} |
269 | | -#' \item{total_n_min_lbs_acre, total_n_max_lbs_acre}{\code{numeric}. |
270 | | -#' Total nitrogen applied (lbs N/acre).} |
271 | | -#' \item{total_c_min_g_m2, total_c_max_g_m2}{\code{numeric}. |
272 | | -#' Total carbon in SI units (g C/m\eqn{^2}).} |
273 | | -#' \item{total_n_min_g_m2, total_n_max_g_m2}{\code{numeric}. |
274 | | -#' Total nitrogen in SI units (g N/m\eqn{^2}).} |
275 | | -#' \item{source}{\code{character}. Short citation for the data source.} |
| 258 | +#' \item{material}{Material name.} |
| 259 | +#' \item{material_class}{CalRecycle feedstock class |
| 260 | +#' (14 CCR section 17852): one of \code{"ag"}, \code{"food"}, |
| 261 | +#' \code{"green"}, \code{"wood"}, \code{"yard"}, \code{"biosolids"}.} |
| 262 | +#' \item{cn_min, cn_max, cn_avg}{C:N ratio range.} |
| 263 | +#' \item{n_pct}{Total N (percent of dry mass).} |
| 264 | +#' \item{pan_pct}{Plant available N at 4 weeks (percent of total N). |
| 265 | +#' Negative values indicate net immobilization.} |
| 266 | +#' \item{n_class}{N tier reported in the source (\code{"LOWER"} or |
| 267 | +#' \code{"HIGHER"}).} |
| 268 | +#' \item{source}{Short citation.} |
276 | 269 | #' } |
277 | 270 | #' |
278 | 271 | #' @source Eghball, B. Composting Manure and Other Organic Residues. |
279 | | -#' University of Nebraska-Lincoln Extension, Publication G2222. |
| 272 | +#' University of Nebraska Lincoln Extension, Publication G2222. |
280 | 273 | #' \url{https://extensionpubs.unl.edu/publication/g2222/na/html/view} |
281 | 274 | #' @source Rynk, R. (ed.) Compost Production and Use in Sustainable |
282 | 275 | #' Farming Systems. NC State Extension. |
283 | 276 | #' \url{https://content.ces.ncsu.edu/compost-production-and-use-in-sustainable-farming-systems} |
284 | 277 | #' |
285 | | -#' @seealso \code{\link{look_up_ca_compost_amendment}} for looking up |
286 | | -#' amendments by material name. |
287 | | -#' \code{\link{look_up_fertilizer_components}} for fertilizer nutrient |
288 | | -#' composition (N/C fractions) from the SWAT/DayCent database. |
289 | | -"ca_compost_amendment" |
| 278 | +#' @seealso \code{\link{ca_organic_amendment_app_rate}}. |
| 279 | +#' \code{\link{look_up_ca_organic_amendment}}. |
| 280 | +"ca_organic_amendment_properties" |
| 281 | + |
| 282 | +#' California organic amendment application rates |
| 283 | +#' |
| 284 | +#' Recommended application rates for each material in |
| 285 | +#' \code{\link{ca_organic_amendment_properties}}, broken out by crop |
| 286 | +#' structure (row crops vs orchards). The two rate sets are identical |
| 287 | +#' for most materials in the source, but a handful of N rich materials |
| 288 | +#' (Blood meal, poultry manure) differ between row and tree applications. |
| 289 | +#' |
| 290 | +#' @format A tibble with 64 rows (32 materials x 2 crop structures) and |
| 291 | +#' the columns: |
| 292 | +#' \describe{ |
| 293 | +#' \item{material}{Material name. Joins to |
| 294 | +#' \code{\link{ca_organic_amendment_properties}}.} |
| 295 | +#' \item{crop_structure}{\code{"rows"} for annual row crops, |
| 296 | +#' \code{"trees"} for perennial orchards.} |
| 297 | +#' \item{app_rate_min, app_rate_max}{Amendment application rate range |
| 298 | +#' (lbs of amendment / acre).} |
| 299 | +#' \item{total_n_min_lbs_acre, total_n_max_lbs_acre}{Total N delivered |
| 300 | +#' at those rates (lbs N / acre).} |
| 301 | +#' \item{source}{Short citation.} |
| 302 | +#' \item{total_n_min_g_m2, total_n_max_g_m2}{Same N range in SI units |
| 303 | +#' (g N / m\eqn{^2}).} |
| 304 | +#' } |
| 305 | +#' |
| 306 | +#' @source Eghball, B. Composting Manure and Other Organic Residues. |
| 307 | +#' University of Nebraska Lincoln Extension, Publication G2222. |
| 308 | +#' @source Rynk, R. (ed.) Compost Production and Use in Sustainable |
| 309 | +#' Farming Systems. NC State Extension. |
| 310 | +#' |
| 311 | +#' @seealso \code{\link{ca_organic_amendment_properties}}. |
| 312 | +#' \code{\link{look_up_ca_organic_amendment}}. |
| 313 | +"ca_organic_amendment_app_rate" |
290 | 314 |
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291 | 315 | #' Crop-specific rooting depths and water-depletion thresholds |
292 | 316 | #' |
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