@article {KNZ00234,
	title = {Influence of mycorrhizal fungi and fertilization on big bluestem seedling biomass},
	journal = {Journal of Range Management},
	volume = {42},
	year = {1989},
	pages = {213 -216},
	abstract = {<p>The relationship between fertilization of prairie soils and mycorrhizal symbiosis in big bluestem (Andropogon gerardii Vit.) was explored. In 10 steamed prairie soils of varied P level, inoculation with a mycorrhizal fungus resulted in a 7- to 70-fold increase in big bluestem seedling biomass, compared to noninoculated controls. Fertilization with N and K (25-0-25) significantly increased biomass of mycorrhizal seedlings but did not alter growth of nonmycorrhizal seedlings. In a second experiment which assessed the impact of N and P on seedling growth, in both steamed and nonsterile soil, P fertilization did not significantly increase plant biomass, while N fertilization did substantially increase biomass of mycorrhizal, but not nonmycorrhizal plants. Fertilization with N and P together produced the greatest biomass in both mycorrhizal and nonmycorrhizal plants. Apparently, in the range soils tested N is the most limiting nutrient, despite the low P availability exhibited by these soils. In the absence of mycorrhizae, however, P is most limiting and no response to N is observed unless sufficient P is also applied. These studies confirm an extremely important role for mycorrhizal fungi on big bluestem seedling growth. Key words: phosphorous, nitrogen, Glomus etunicatum, mycorrhizae, Andropogon gerardii</p>},
	keywords = {LTER-KNZ},
	doi = {10.2307/3899475},
	author = {Hetrick, B.A.D. and G.T. Wilson and Owensby, C.E.}
}
