Publications

the freundlich adsorption isotherm constants and prediction of phosphorus bioavailability as affected by different phosphorus sources in two kansas soils.	phosphorus (p) adsorption onto soil constituents influences p bioavailability from both agronomic and environmental perspectives. in this study, the p availability from different p sources along with utility of freundlich adsorption coefficients on the predictability of various crop growth parameters were assessed. two soils were amended with 150mgpkg(-1) each from six different p sources comprised of manures from two types of ruminants animals, three types of monogastric animals, and inorganic ...	2014	24238913
crop residue and residue management effects on armadillidium vulgare (isopoda: armadillidiidae) populations and soybean stand densities.	in general, armadillidium vulgare (latreille) are considered nonpests of soybean [glycine max (l.) merrill], but changes in soil conservation practices have shifted the pest status of this organism from an opportunistic to a perennial, early-season pest in parts of central kansas. as a result, soybean producers that rotate with corn (zea mays l.) under conservation tillage practices have resorted to removing excess corn residue by using controlled burns. in a 2-yr field study (2009-2010), we dem ...	2012	23156159
economic feasibility of no-tillage and manure for soil carbon sequestration in corn production in northeastern kansas.	this study examined the economic potential of no-tillage versus conventional tillage to sequester soil carbon by using two rates of commercial n fertilizer or beef cattle manure for continuous corn (zea mays l.) production. yields, input rates, field operations, and prices from an experiment were used to simulate a distribution of net returns for eight production systems. carbon release values from direct, embodied, and feedstock energies were estimated for each system, and were used with soil c ...	2006	16825456