Publications

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
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
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