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Data product for "Effects of water and nitrogen availability on nitrogen contribution by the legume, Lupinus argenteus Pursh"

Publication Year: 
2009
Author: Goergen, Erin

We conducted a greenhouse experiment to examine the separate and interacting effects of water and nitrogen (N) availability on biomass production, tissue N concentration, nodulation, nodule activity, and rhizodeposition of Lupinus argenteus (Pursh), a legume native to sagebrush steppe. Plants were grown in a replicated, randomized block design with three levels of water and four levels of N. Within treatment, we measured above and belowground biomass, tissue nitrogen concentration, acetylene reduction and 15N as estimates of fixation, and exudation of organic nitrogen into the rhizosphere.