| 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 |
| evaluation of late vegetative and reproductive stage soybeans for resistance to soybean aphid (hemiptera: aphididae). | the soybean aphid, aphis glycines matsumura, has become the most significant soybean [glycine max (l.) merrill] insect pest in the north central soybean production region of north america. the objectives of this research were to measure selected genotypes for resistance to the soybean aphid in the later vegetative and reproductive stages under field conditions, and confirm the presence of tolerance in ks4202. the results from 2007 to 2011 indicate that ks4202 can support aphid populations with m ... | 2013 | 23786098 |
| diel patterns of colaspis brunnea and colaspis crinicornis (coleoptera: chrysomelidae) in southeastern nebraska. | a field study was conducted to increase our understanding of diel activity patterns of colaspis brunnea (f.) and colaspis crinicornis schaeffer (coleoptera: chrysomelidae) in key crop habitats. within 24-h periods, c. brunnea was sampled in clover fields (primarily red clover, trifolium pretense (l.), with some sweet clover, melilotus officinalis (l.) pallas, and downy brome, bromus tectorum (l.)) and soybean, glycine max (l.) merrill, fields, using a sweep-net, while whole-plant-count sampling ... | 2015 | 26314034 |