Recommended nitrogen fertilizer application rates for California crops. When multiple sources report rates for the same crop the value is the envelope across sources. Crops reported only as within year stages (Barley, Beans, Cauliflower, Melons) have stages summed to an annual total. Crops reported only by age (Almonds) get the envelope across ages.
Format
A tibble with one row per crop and the columns:
- pft_group
Plant functional type group:
"row","woody", or"rice".- crop
Crop name as given in the source.
- min_n_lbs_acre, max_n_lbs_acre
Recommended N rate range (lbs N / acre).
- source
Short citation. Multiple sources are joined with
"; ".- min_n_g_m2, max_n_g_m2
Same range in SI units (g N / m\(^2\)).
Source
Rosenstock, T. S., Liptzin, D., Six, J., Tomich, T. P. (2013). Nitrogen fertilizer use in California: Assessing the data, trends and a way forward. California Agriculture 67(1). https://escholarship.org/uc/item/5mk2q1sm
Meyer, R. D., Marcum, D. B., Orloff, S. B., Schmierer, J. L. (2007). Alfalfa fertilization strategies. UC ANR Publication 8292.
Brown, P. H. et al. (2020). Nitrogen Best Management Practices for Almonds. Almond Board of California. Source for Almonds rates by age.
Lazicki, P., Geisseler, D., Horwath, W. R. (2016). Potato Production in California. CDFA FREP / UC Davis. Source for Potato.