| predicting unsaturated zone nitrogen mass balances in agricultural settings of the united states. | unsaturated zone n fate and transport were evaluated at four sites to identify the predominant pathways of n cycling: an almond [prunus dulcis (mill.) d.a. webb] orchard and cornfield (zea mays l.) in the lower merced river study basin, california; and corn-soybean [glycine max (l.) merr.] rotations in study basins at maple creek, nebraska, and at morgan creek, maryland. we used inverse modeling with a new version of the root zone water quality model (rzwqm2) to estimate soil hydraulic and nitro ... | 2010 | 20400601 |