@article{ettershank_effects_1978,
	title = {Effects of nitrogen fertilization on primary production in a {Chihuahuan} {Desert} ecosystem},
	volume = {1},
	abstract = {In a Chihuahuan desert ecosytem, the growth responses to nitrogen amendment of a perennial shrub (creosotebush, \textit{Larrea tridentata}) and a perennial grass (fluff grass, \textit{Erioneuron pulchellum}) were made twice during the growing season: first during a period of average rainfall, then during a period of above average rainfall.  Fluff grass exhibited a marked increase in biomass to 25 kg ha-1 and 100 kg ha-1 nitrogen fertilization.  Creosotebush increased biomass production only at the higher level during both periods.  These results suggest that productivity of a Chihuahuan desert system is partially nitrogen limited and that shallow-rooted plants utilized the available nitrogen at the 25 kg ha-1 fertilization level, thus making it unavailable to creosotebush.},
	author = {Ettershank, George and Ettershank, Jennifer and Bryant, Martha and Whitford, Walter G.},
	year = {1978},
	keywords = {primary production, JRN, larrea}
}

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