Search Results - "Louie, D.T."

Spatial Variation in Nitrogen Isotope Values Beneath Nitrate Contamination Sources by Fogg, Graham E., Rolston, D.E., Decker, D.L., Louie, D.T., Grismer, M.E.

“…Nitrogen isotope ratios of soil water and ground water nitrate have been used to identify or implicate sources; however, lack of data on δ15N in thick (>12 m)…”
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Microbial responses and nitrous oxide emissions during wetting and drying of organically and conventionally managed soil under tomatoes by Burger, M, Jackson, L.E, Lundquist, E.J, Louie, D.T, Miller, R.L, Rolston, D.E, Scow, K.M

“…The types and amounts of carbon (C) and nitrogen (N) inputs, as well as irrigation management are likely to influence gaseous emissions and microbial ecology…”
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Evaluation of an in situ method for measurement of gas diffusivity in surface soils by Rolston, D.E, Glauz, R.D, Grundmann, G.L, Louie, D.T

“…Diffusion of gases across the soil/atmosphere interface is a major mechanism in water evaporation, soil aeration, and volatilization of N species, pesticides,…”
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Spatial variation in nitrogen isotope value beneath nitrate contamination sources by Fogg, G.E. (University of Nevada, Reno), Rolston, D.E, Decker, D.L, Louie, D.T, Grismer, M.E

“…Nitrogen isotope ratios of soil water and ground water nitrate have been used to identify or implicate sources; however, lack of data on delta 15N in thick (…”
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Fate of 15N fertilizer applied to trickle-irrigated grapevines by Hajrasuliha, S. (Isfahan University, Iran.), Rolston, D.E, Louie, D.T

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Micropenetrometer for in situ measurement of soil surface strength by Rolston, D.E. (University of California, Davis, CA), Bedaiwy, M.N.A, Louie, D.T

“…Soil surface characteristics greatly influence seedling emergence, water infiltration, and soil erosion. A portable micropenetrometer was designed to measure…”
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Nitrogen isotope ratios identify nitrate contamination sources by Dennis Rolston, Graham Fogg, David L. Decker, Dianne T. Louie, Mark Grismer

“…Nitrate contamination of groundwater is becoming a widespread problem in California. To evaluate the utility of stable nitrogen isotopes for identifying…”
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Cover crops lower soil surface strength, may improve soil permeability by O Folorunso, D Rolston, P Prichard, D Louie

“…Poor water penetration constitutes a major production constraint for more than 400, 000 acres of agricultural land in California. The associated economic…”
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