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44 results on '"ROSEN, CARL"'

5. Soil‐nitrogen, potentially mineralizable‐nitrogen, and field condition information marginally improves corn nitrogen management

Author

Clark, Jason D., primary, Fernández, Fabián G., additional, Veum, Kristen S., additional, Camberato, James J., additional, Carter, Paul R., additional, Ferguson, Richard B., additional, Franzen, David W., additional, Kaiser, Daniel E., additional, Kitchen, Newell R., additional, Laboski, Carrie A. M., additional, Nafziger, Emerson D., additional, Rosen, Carl J., additional, Sawyer, John E., additional, and Shanahan, John F., additional

Published
2020
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6. Adjusting corn nitrogen management by including a mineralizable‐nitrogen test with the preplant and presidedress nitrate tests

Author

Clark, Jason D., primary, Fernández, Fabián G., additional, Veum, Kristen S., additional, Camberato, James J., additional, Carter, Paul R., additional, Ferguson, Richard B., additional, Franzen, David W., additional, Kaiser, Daniel E., additional, Kitchen, Newell R., additional, Laboski, Carrie A. M., additional, Nafziger, Emerson D., additional, Rosen, Carl J., additional, Sawyer, John E., additional, and Shanahan, John F., additional

Published
2020
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8. Soil sample timing, nitrogen fertilization, and incubation length influence anaerobic potentially mineralizable nitrogen

Author

Clark, Jason D., primary, Veum, Kristen S., additional, Fernández, Fabián G., additional, Kitchen, Newell R., additional, Camberato, James J., additional, Carter, Paul R., additional, Ferguson, Richard B., additional, Franzen, David W., additional, Kaiser, Daniel E., additional, Laboski, Carrie A. M., additional, Nafziger, Emerson D., additional, Rosen, Carl J., additional, Sawyer, John E., additional, and Shanahan, John F., additional

Published
2020
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9. Predicting Economic Optimal Nitrogen Rate with the Anaerobic Potentially Mineralizable Nitrogen Test

Author

Clark, Jason D., primary, Fernández, Fabián G., additional, Veum, Kristen S., additional, Camberato, James J., additional, Carter, Paul R., additional, Ferguson, Richard B., additional, Franzen, David W., additional, Kaiser, Daniel E., additional, Kitchen, Newell R., additional, Laboski, Carrie A. M., additional, Nafziger, Emerson D., additional, Rosen, Carl J., additional, Sawyer, John E., additional, and Shanahan, John F., additional

Published
2019
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12. United States Midwest Soil and Weather Conditions Influence Anaerobic Potentially Mineralizable Nitrogen

Author

Clark, Jason D., primary, Veum, Kristen S., additional, Fernández, Fabián G., additional, Camberato, James J., additional, Carter, Paul R., additional, Ferguson, Richard B., additional, Franzen, David W., additional, Kaiser, Daniel E., additional, Kitchen, Newell R., additional, Laboski, Carrie A. M., additional, Nafziger, Emerson D., additional, Rosen, Carl J., additional, Sawyer, John E., additional, and Shanahan, John F., additional

Published
2019
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16. Reliability of Measurement and Genotype × Environment Interaction for Potato Specific Gravity

Author

Wang, Yi, primary, Snodgrass, Lance B., additional, Bethke, Paul C., additional, Bussan, Alvin J., additional, Holm, David G., additional, Novy, Richard G., additional, Pavek, Mark J., additional, Porter, Gregory A., additional, Rosen, Carl J., additional, Sathuvalli, Vidyasagar, additional, Thompson, Asunta L., additional, Thornton, Michael T., additional, and Endelman, Jeffrey B., additional

Published
2017
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42. Broadcast urea reduces N2O but increases NO emissions compared with conventional and shallow-applied anhydrous ammonia in a coarse-textured soil.

Author

Fujinuma R, Venterea RT, and Rosen C

Subjects
Agriculture, Climate, Zea mays, Ammonia chemistry, Nitric Oxide chemistry, Nitrous Oxide chemistry, Soil chemistry, Urea chemistry
Abstract

Despite the importance of anhydrous ammonia (AA) and urea as nitrogen (N) fertilizer sources in the United States, there have been few direct comparisons of their effects on soil nitrous oxide (NO) and nitric oxide (NO) emissions. We compared N oxide emissions, yields, and N fertilizer recovery efficiency (NFRE) in a corn ( L.) production system that used three different fertilizer practices: urea that was broadcast and incorporated (BU) and AA that was injected at a conventional depth (0.20 m) (AAc) and at a shallower depth (0.10 m) (AAs). Averaged over 2 yr in an irrigated loamy sand in Minnesota, growing season NO emissions increased in the order BU < AAc < AAs. In contrast, NO emissions were greater with BU than with AAc or AAs. Emissions of NO ranged from 0.5 to 1.4 kg N ha (50-140 g N Mg grain), while NO emissions ranged from 0.2 to 0.7 kg N ha (20-70 g N Mg grain). Emissions of total N oxides (NO + NO) increased in the order AAc < BU < AAs. Despite having the greatest emissions of NO and total N oxides, the AAs treatment had greater NFRE compared with the AAc treatment. These results provide additional evidence that AA emits more NO, but less NO, than broadcast urea and show that practices to reduce NO emissions do not always improve N use efficiency., (Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.)

Published
2011
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43. Phosphorus runoff from turfgrass as affected by phosphorus fertilization and clipping management.

Author

Bierman PM, Horgan BP, Rosen CJ, Hollman AB, and Pagliari PH

Subjects
Agriculture, Environmental Monitoring, Time Factors, Fertilizers analysis, Phosphorus chemistry, Poa physiology, Water Movements, Water Pollutants, Chemical chemistry
Abstract

Phosphorus enrichment of surface water is a concern in many urban watersheds. A 3-yr study on a silt loam soil with 5% slope and high soil test P (27 mg kg(-1) Bray P1) was conducted to evaluate P fertilization and clipping management effects on P runoff from turfgrass (Poa pratensis L.) under frozen and nonfrozen conditions. Four fertilizer treatments were compared: (i) no fertilizer, (ii) nitrogen (N)+potassium (K)+0xP, (iii) N+K+1xP, and (iv) N+K+3xP. Phosphorus rates were 21.3 and 63.9 kg ha(-1) yr(-1) the first year and 7.1 and 21.3 kg ha(-1) yr(-1) the following 2 yr. Each fertilizer treatment was evaluated with clippings removed or clippings recycled back to the turf. In the first year, P runoff increased with increasing P rate and P losses were greater in runoff from frozen than nonfrozen soil. In year 2, total P runoff from the no fertilizer treatment was greater than from treatments receiving fertilizer. This was because reduced turf quality resulted in greater runoff depth from the no fertilizer treatment. In year 3, total P runoff from frozen soil and cumulative total P runoff increased with increasing P rate. Clipping management was not an important factor in any year, indicating that returning clippings does not significantly increase P runoff from turf. In the presence of N and K, P fertilization did not improve turf growth or quality in any year. Phosphorus runoff can be reduced by not applying P to high testing soils and avoiding fall applications when P is needed.

Published
2009
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44. Phosphorus leaching in sandy outwash soils following potato-processing wastewater application.

Author

Zvomuya F, Gupta SC, and Rosen CJ

Subjects
Adsorption, Bromine analysis, Phosphorus analysis, Seasons, Silicon Dioxide, Water Movements, Solanum tuberosum, Waste Disposal, Fluid methods, Water Pollutants analysis
Abstract

Land application of wastewater presents potential for ground water pollution if not properly managed. In situ breakthrough tests were conducted using potato (Solanum tuberosum L.)-processing wastewater and a Br tracer to characterize P leaching in seasonally frozen sandy outwash soils. In the first test, P and Br breakthrough were measured in a 7-m deep well following wastewater [2.94 mg L(-1) total P (TP); 280 mg L(-1) Br] application at the site that had 13.1 mg water-extractable P (WEP) kg(-1)and 94.4 mg Bray-1 P kg(-1). Bromide was detected in the well after approximately 0.4 pore volumes, but there was no P break-through after 7 pore volumes. In the second breakthrough test, wastewater containing 3.6 mg L(-1) TP and 259 mg L(-1) Br was applied on 1.5-m deep lysimeters at low (0.8 mg WEP kg(-1); 12.1 mg Bray-1 P kg(-1)) and high soil test P sites (104 mg WEP kg(-1); 585 mg Bray-1 P kg(-1)). Leachate TP concentration during the test remained constant (0.04 mg L(-1)) at the low P sites but increased from approximately 3.5 to 5.6 mg L(-1) at the high P sites. These results indicate no P leaching in low P soils, but leaching in high P soils, thus suggesting that most of the P leached at the high P sites was mainly due to desorption and dissolution of weakly adsorbed P from prior P applications. This was consistent with P transport simulations using the convective-dispersive equation. We conclude that P concentration in land-applied wastewater should be regulated based on soil test-P level plus wastewater P loading.

Published
2005
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