Search Results - "Kaspar, T. C"

Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water by Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., Singer, J.W.

“…► Nitrate losses in agricultural drainage water impact surface water quality in the USA. ► Both a fall oat cover crop and a rye winter cover crop reduced…”
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Soil and soil organic carbon redistribution on the landscape by Ritchie, Jerry C., McCarty, Gregory W., Venteris, Erik R., Kaspar, T.C.

“…Patterns of soil organic carbon (SOC) vary widely across the landscape leading to large uncertainties in the SOC budget especially for agricultural landscapes…”
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Cover crop effects on the fate of N following soil application of swine manure by Parkin, T. B, Kaspar, T. C, Singer, J. W

“…Cereal grain cover crops increase surface cover, anchor corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] residues, increase infiltration, reduce both…”
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Effect of 6-Methoxy-2-Benzoxazolinone (MBOA) on Pythium Species and Corn Seedling Growth and Disease by Acharya, J, Kaspar, T C, Robertson, A E

“…Corn yield reduction following a cereal rye cover crop has been attributed to, among other factors, allelochemicals released from decomposing cereal rye…”
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Cluster Analysis of Spatiotemporal Corn Yield Patterns in an Iowa Field by Jaynes, D.B, Kaspar, T.C, Colvin, T.S, James, D.E

“…Crop yields are frequently heterogeneous across space and time. We performed this study to determine if cluster analysis could be used to decipher the temporal…”
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Atomic oxygen flux determined by mixed-phase Ag/Ag2O deposition by KASPAR, T. C, DROUBAY, T. C, CHAMBERS, S. A

“…The flux of atomic oxygen generated in an electron cyclotron resonance microwave plasma source was quantified by two different methods. The commonly applied…”
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Estimating Soil Organic Carbon in Central Iowa Using Aerial Imagery and Soil Surveys by Gelder, B.K, Anex, R.P, Kaspar, T.C, Sauer, T.J, Karlen, D.L

“…Widespread implementation of precision agriculture practices requires low-cost, high-quality data such as soil organic C (SOC) content, but SOC mapping…”
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Relationship of corn and soybean yield to soil and terrain properties by Kaspar, T.C, Pulido, D.J, Fenton, T.E, Colvin, T.S, Karlen, D.L, Jaynes, D.B, Meek, D.W

“…Farmers will be better able to implement site-specific management practices when they understand the causes of spatial and temporal variability of corn (Zea…”
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Examining Changes in Soil Organic Carbon with Oat and Rye Cover Crops Using Terrain Covariates by Kaspar, T.C, Parkin, T.B, Jaynes, D.B, Cambardella, C.A, Meek, D.W, Jung, Y.S

“…Winter cover crops have the potential to increase soil organic C in the corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] rotation in the upper Midwest…”
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Effect of Planting into a Green Winter Cereal Rye Cover Crop on Growth and Development, Seedling Disease, and Yield of Corn by Acharya, J, Moorman, T B, Kaspar, T C, Lenssen, A W, Gailans, S, Robertson, A E

“…Terminating winter cereal rye ( L.) cover crops ≥10 days before planting (DBP) corn is recommended to minimize seedling disease and potential yield loss. In…”
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Accurate valence band maximum determination for SrTiO3(001) by CHAMBERS, S. A, DROUBAY, T, KASPAR, T. C, GUTOWSKI, M, VAN SCHILFGAARDE, M

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Band alignment, built-in potential, and the absence of conductivity at the LaCrO3/SrTiO3(001) heterojunction by Chambers, S A, Qiao, L, Droubay, T C, Kaspar, T C, Arey, B W, Sushko, P V

“…Core-level and valence-band x-ray photoemission spectra measured for molecular-beam-epitaxy-grown LaCrO(3)/SrTiO(3)(001) yield band offsets and potential…”
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N loss to drain flow and N2O emissions from a corn-soybean rotation with winter rye by Gillette, K., Malone, R.W., Kaspar, T.C., Ma, L., Parkin, T.B., Jaynes, D.B., Fang, Q.X., Hatfield, J.L., Feyereisen, G.W., Kersebaum, K.C.

“…•Root Zone Water Quality Model tested for simulated nitrate loss to subsurface drainage•Root Zone Water Quality Model tested for simulated nitrous oxide…”
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Absence of intrinsic ferromagnetic interactions of isolated and paired Co dopant atoms in Zn1-xCoxO with high structural perfection by Ney, A, Ollefs, K, Ye, S, Kammermeier, T, Ney, V, Kaspar, T C, Chambers, S A, Wilhelm, F, Rogalev, A

“…We report element specific structural and magnetic investigations on Zn(1-x)Co(x)O epitaxial films using synchrotron radiation. Co dopants exclusively occupy…”
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Rye Cover Crop and Gamagrass Strip Effects on NO3 Concentration and Load in Tile Drainage by Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B.

“…A significant portion of the NO3 from agricultural fields that contaminates surface waters in the Midwest Corn Belt is transported to streams or rivers by…”
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Band offsets for the epitaxial TiO2/SrTiO3/Si(001) system by Tuan, A. C., Kaspar, T. C., Droubay, T., Rogers, J. W., Chambers, S. A.

“…We have used x-ray photoelectron spectroscopy with high energy resolution to determine band discontinuities at the two buried interfaces of the epitaxial TiO2…”
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Cation mixing, band offsets and electric fields at LaAlO3/SrTiO3(001) heterojunctions with variable La:Al atom ratio by QIAO, L, DROUBAY, T. C, KASPAR, T. C, SUSHKO, P. V, CHAMBERS, S. A

“…Interfacial intermixing and electronic structure were investigated at thin (3–5 unit cells.), epitaxial La1-xAl1+xO3/SrTiO3(001) heterojunctions for x = 0 and…”
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Field Measurement of Soil Surface Chemical Transport Properties for Comparison of Management Zones by Heitman, J.L, Gaur, A, Horton, R, Jaynes, D.B, Kaspar, T.C

“…Management of chemicals in soil is important, yet the complexity of field soils limits prediction of management effects on transport. To date, few methods have…”
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Model-based technique to determine variable rate nitrogen for corn by Paz, J.O, Batchelor, W.D, Babcock, B.A, Colvin, T.S, Logsdon, S.D, Kaspar, T.C, Karlen, D.L

“…Past efforts to correlate yield from small field plots to soil type, elevation, fertility, and other factors have been only partially successful for…”
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Corn stover harvest N and energy budgets in central Iowa by Malone, R.W., Herbstritt, S., Ma, L., Richard, T.L., Cibin, R., Gassman, P.W., Zhang, H.H., Karlen, D.L., Hatfield, J.L., Obrycki, J.F., Helmers, M.J., Jaynes, D.B., Kaspar, T.C., Parkin, T.B., Fang, Q.X.

“…Harvesting corn stover removes N from the fields, but its effect on subsurface drainage and other N losses is uncertain. We used the Root Zone Water Quality…”
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