Major Nutrients > Nitrogen > Back to Topics

Slow-Release Fluid N Bumps Potato Yields Versus Other N Sources James Wargo Trials at Cornell Cooperatuve Extension and University of Wisconsin compare fluid N with ammonium nitrate, urea, and ammonium sulfate. Issue 58, Vol. 15, No.  4 - Fall 2007 - Pages 12-13 (PDF, 2 pages, 153 KB)

Timing of N and P Crucial In Achieving High Corn Yields Drs. M. Alley, M. Martz, and W. Thomason Inadequate N availability during first six weeks after planting can result in reduced yield potentials. Issue 57, Vol. 15, No. 3 - Spring 2007 - Pages 20-23 (PDF, 3 pages, 355 KB)

How To Enhance Soil Organic Carbon Sequestration Dr. Ardell Halvorson and Curtis Reule Texas studies show optimizing crop yields and reducing soil erosion via proper management practices are paying dividends not only environmentally but in crop yields as well. Issue 57, Vol. 15, No. 3 - Spring 2007 - Pages 17-19 (PDF, 3 pages, 209 KB)

Study Suggests No Consistent Yield Benefit To Split N Fertilization Drs. Ramona Mohr and Dale Tomasiewicz Tuber yield highest for the 4x split N treatments in one of four site-years in Manitoba. Issue 57, Vol. 15, No.  3 - Spring 2007 - Pages 8-12 (PDF, 4 pages, 884 KB)

Stopping N Losses More Urgent Than Ever With Current Nitrogen Prices Industry At Work More and more growers are looking to urease inhibitors to curb N losses. Issue 55, Vol. 15, No.  1 - Winter 2007 - Pages 12-13 (PDF, 2 pages, 173 KB)

Strategies for Split Nitrogen Applications Drs. Gyles Randall and Michael Schmidt Overview is offered on over 60-site years of field data on corn grown in medium and fine-textured soils. Issue 56, Vol. 15, No. 2 - Spring 2007 - Pages 20-23 (PDF, 4 pages, 500 KB)

Post-Emergent Nitrogen Applications Have Potential for Increasing N-use Efficiency in Spring Grains Drs. G. Lafond, S. Brandt, W. May, C. Holzapfel and A. Johnston Provisos are that some starter N is applied at time of seeding, but the amount of starter N is dependent on how much risk the grower is willing to assume by going with more N after crop emergence. Issue 56, Vol. 15, No. 2 - Early Spring 2007 - Pages 8-11 (PDF, 4 pages, 704 KB)

Optimizing N Management Without Ammonium Nitrate Drs. Alan Blaylock and Larry Murphy Nitrogen-use efficiency coming more into focus with the gradual phasing out of ammonium nitrate. Issue 54, Vol. 14, No. 4 - Fall 2006 - Pages 20-22 (PDF, 3 pages, 146 KB)

Returns Mixed On Wheat Pasture Response To N and Maintenance P in Wheat/Stocker Systems J. Sij, W. Pinchak, J. Ott, B. Min, D. Malinowski, D. Robinson Even though yields were increased nearly 6 bu/A, a rough analysis shows returns were only marginally profitable. Issue 53, Vol. 14, No. 3 - Spring 2006 - Pages 8-10 (PDF, 2 pages, 67 KB)

Applying Some Starter N at Seeding Critical in Spring Wheat and Canola Drs. G. Lafond, S. Brandt, W. May, C. Grant and A. Johnston Canadian researchers speculate that 50 percent of total N required should be applied at seeding to minimize risks with post-emergent N applications. Issue 52, Vol. 14, No. 2 - Early Spring 2006 - Pages 8-11 (PDF, 2 pages, 54 KB)

Late-season Applied N Can Increase Alfalfa Yields Drs. W. Raun, G. Johnson, S. Phillips, W. Thomason, Mr. J. Dennis and Mr. D. Cossey Increased yields due to applied N found in last or second to last harvest. Issue 52, Vol. 14, No. 2 - Early Spring 2006 - Pages 20-23 (PDF, 3 pages, 70 KB)

Basics Short Course FFF Feature Issue 50, Vol. 13, No. 4 - Fall 2005 - Page 4 (PDF, 1 pages, 32 KB)

UAN Demonstrates Its Effectiveness In Western Australia Special: Industry at Work Advantages of fluids catching on in Western Australia where their use is expanding. Issue 49, Vol. 13, No. 3 - Spring 2005 - Pages 12-13 (PDF, 2 pages, 54 KB)

Value of Fluid Flexibility In Intensive Wheat Management Phil Needham Nitrogen is a key component to yield and accurate timing of the appropriate form of the nutrient can reap huge rewards. Issue 49, Vol. 13, No. 3 - Spring 2005 - Pages 14-16 (PDF, 2 pages, 49 KB)

Variable-rate N Management Drs. James Schepers and John Shanahan Also increases N-use efficiency and minimizes potential environmental consequences. Issue 49, Vol. 13, No. 3 - Spring 2005 - Pages 20-23 (PDF, 3 pages, 34 KB)

Is Fertilizing For Grain Quality Different From Fertilizing For Yield? Dr. Fred Below, Juliann Seebauer, and Martin Uribelarrea Illinois studies show that N rate needed to maximize grain protein is higher than that needed to optimize grain yield. Issue 47, Vol. 13, No.  1 - Winter 2005 - Pages 14-16 (PDF, 3 pages, 103 KB)

Proper Nutrient/Water Input, Key To High-yielding Cotton Dr. Daniel Kreig Management of nutrient supplies, especially in nitrogen and phosphorus, ensures deficiencies will not occur during early stages of fruit development. Issue 47, Vol. 13, No. 1 - Spring 2004 - Pages 20-22 (PDF, 3 pages, 90 KB)

Managing Nitrogen with Five-Dollar Gas Dr. Gyles Randall Rising gas prices encourage optimizing management practices. Issue 46, Vol. 12, No.  3 - Fall 2004 - Pages 14-16 (PDF, 3 pages, 173 KB)

N-use Efficiency Improves In Ecological Intensification Project Drs. T. Arkebauer, A. Dobermann, K. Cassman, R. Drijber, J. Lindquist, J. Specht, D. Walters, and H. Yang Management systems are designed to preserve environment. Issue 46, Vol. 12, No.  3 - Fall 2004 - Pages 17-19 (PDF, 3 pages, 233 KB)

Will Continuous Supply of NH4+-N Increase Irrigated Crop Production? Dr. D. R. Krieg Results of studies in the Texas South Plains showed positive responses with cotton but not sorghum. Issue 45, Vol. 12, No. 2 - Spring 2004 - Pages 20-23 (PDF, 2 pages, 57 KB)

Alternatives to Fall N Applications via Fluids Dr Gyles Randall and Jeffrey Vetsch Study looks at different application timing under two distinctly different corn tillage systems. Issue 43, Vol. 11, No.  4 - Fall 2003 - Pages 8-10 (PDF, 2 pages, 29 KB)

Sensor-Based N Management Strategy New optical sensing variable rate application system improves nitrogen use efficiency and increases producer returns. Issue 42, Vol. 11, No.  3 - Late Spring 2003 - Pages 12-13 (PDF, 2 pages, 28 KB)

Improving Nutrient Management Via Evolving Strategies and New Technologies Drs. J.S. Schepers, S. Payton, D.D. Francis, and J. Shanahan Nebraska studies focus especially on nitrogen and its impact on the environment. Issue 41, Vol. 11, No.  2 - Early Spring 2003 - Pages 18-22 (PDF, 4 pages, 30 KB)

Searching for a Right Balance in Plant Population and Nitrogen Fertility Drs. J.M. Blumenthal and D.J. Lyon Nebraska studies on dryland corn show interesting correlations between yields and management of plant populations and nitrogen fertility. Issue 40, Vol. 11, No.  1 - Winter 2003 - Pages 14-17 (PDF, 3 pages, 39 KB)

What About N in NPK Starters? Dr. R.E. Lamond, Dr. W.B. Gordon, B.J. Niegues, C.J. Olsen Be careful, Kansas researchers warn, about how high you raise those N rates. Issue 39, Vol. 10, No. 4 - Fall 2002 - Pages 12-13 (PDF, 2 pages, 28.3 KB)

Sidedressing Nitrogen in Corn Makes Sense Special: Industry at Work It is not only friendly to the environment but also improves return on investment and crop yields. Issue 37, Vol. 10, No. 2 - Spring 2002 - Pages 12-13 (PDF, 2 pages, 15.22 KB)

Liquid N Shines in Turf Applications Dr. C.F. Mancino, Ms. Dianne Petrunak and Mr. Douglas Wilkinson Shows less N loss compared to granulars in 1999 Penn State University putting green trials. Issue 37, Vol. 10, No. 2 - Spring 2002 - Pages 14-17 (PDF, 2 pages, 21.9 KB)

NPK Starters Best N-Only Starters Drs. R.E. Lamond and W.B. Gordon Kansas researchers report combo produced superior corn yields even though soil P and K levels were high. Issue 35, Vol. 9, No. 4 - Fall 2001 - Pages 20-23 (PDF, 3 pages, 47.1 KB)

No-Tillage and N Fertilization Enhance Soil Carbon Sequestration Dr. A.D. Halvorson, C.A. Reule, Dr. L.S. Murphy Studies show that returning N treated residue to soil works better in no-till than in conventional-till systems. Issue 30, Vol. 8, No. 3 - Summer 2000 - Pages 8-11 (PDF, 3 pages, 30.5 KB)

NBPT Reduces Seedling Damage In UAN Trials Drs. C.A. Grant, D.A. Derksen, D. McLaren Canadian no-till canola studies find NBPT helps maintain stand density when increasing rates of side-banded UAN in certain soils. Issue 29, Vol. 8, No. 2 - Spring 2000 - Pages 16-19 (PDF, 3 pages, 37.5 KB)

Late-Planted Soybeans Respond To Nitrogen Starter M.E. Starling, Dr. C. Wesley Wood, Dr. David B. Weaver Cultivars are compared with varying responses to applied starters at low-N rates. Future studies will focus more on optimum N rates. Issue 28, Vol. 8, No. 1 - Winter 1999 - Pages 24-25 (PDF, 2 pages, 75.6 KB)

A Look At Starters, Row Cleaners And N Placement In No-Till Dr. Gyles Randall and Jeffrey Vetsch Minnesota researchers use study to determine effects of its components on no-till continuous corn and corn after soybeans. Issue 27, Vol. 7, No. 4 - Fall 1999 - Pages 20-23 (PDF, 3 pages, 253 KB)

Simulated Rain Experiments Measure Runoff Of N And P Drs. G.J. Gascho, R.D. Wauchope, J.G. Davis, C.C. Truman, C.C. Dowler, J.E. Hook, A.W. Johnson, and Mr. H.R. Sumner Tests by Georgia scientists indicate UAN may not be as susceptible to runoff losses as granular fertilizers. Issue 26, Vol. 7, No. 3 - Summer 1999 - Pages 16-19 (PDF, 3 pages, 27.5 KB)

Applied N At R3 Stage Bumps Soybean Yields T.L. Wesley, Drs. R.E. Lamond, V.L. Martin, S.R. Duncan Nitrogen applications at R3 growth stage produce 11.8 percent average yield increase in two-year Kansas study. Issue 25, Vol. 7, No. 2 - Spring 1999 - Pages 16-19 (PDF, 3 pages, 279 KB)

High Residual Soil Mineral-N Impedes Response R. Khosla, Dr. M.M. Alley, P.H. Davis, Dr. D.E. Brann Virginia researchers find increased residual N accumulations in soil from drought and changing crop practices can sharply reduce crop response to additional N applications. Issue 23, Vol. 6, No. 4 - Fall 1998 - Pages 22-26 (PDF, 4 pages, 50.4 KB)

Soil Variability in Landscapes Affects N Management Drs. R.A. Ortega, D.G. Westfall and G.A. Peterson; W.J. Gangloff Colorado researchers find topographical variabitity affects grain yield, soil properties, and N fertilizer response of dryland corn in VRT studies. Issue 22, Vol. 6, No. 3 - Summer 1998 - Pages 22-26 (PDF, 4 pages, 334 KB)

Point Injection Of N Shines In Sugar Beet Trials Drs. L.W. Van Tassell, A.D. Blaylock, Bozheng Yang Wyoming researchers provide economic analysis comparing broadcasting with point injection and knife banding. Issue 20, Vol. 6, No. 1 - Winter 1998 - Pages 24-26 (PDF, 2 pages, 129 KB)

Corn Responds Best To Spoke Wheel Injected UAN In Ridge-Till Trials Drs. G.W. Randall, T.K. Iragavarapu, B.R. Bock Minnesota scientists seek optimal N efficiency and minimal ammonia volatilization in four-year study. Issue 19, Vol. 5, No. 4 - Fall 1997 - Pages 16-19 (PDF, 4 pages, 250 KB)

N Fights Corn Root Worms? Dr. Walter E. Riedell Data from South Dakota research suggest that N management could play an important role in improving tolerance to corn root worms. Issue 15, Vol. 4, No. 4 - Fall 1996 - Pages 18-21 (PDF, 3 pages, 90.1 KB)

N: The Vital Nutrient In The Great Plains Dr. Gary Peterson Cropping intensification brings greater need for N fertilizers in Great Plains. Issue 14, Vol. 4, No. 3 - Summer 1996 - Pages 18-21 (PDF, 2 pages, 17.3 KB)

Fine-Tuning N For The Environment Dr. Raun Lohry Understanding the nature of N and how it can be managed are essential to making fertilizer practices environmentally friendly. Issue 12, Vol. 4, No. 1 - Winter 1995 - Pages 24-27 (PDF, 3 pages, 98.5 KB)

Drip Irrigation Improves N Efficiency Dr. T.K. Hartz Trend in California is toward drip iffigation to improve water/N management and protect environment. Issue 12, Vol. 4, No. 1 - Winter 1996 - Pages 11-13 (PDF, 3 pages, 227 KB)

Beware Of N Lockup In Reactivated CRP Fields Dr. Paul Fixen Carbon to nitrogen ratios higher than 30:1 could temporarily immobilize soil or fertilizer N in high-residue fields. Issue 12, Vol. 4, No. 1 - Winter 1996 - Pages 14-15 (PDF, 2 pages, 16.1 KB)

Injecting N Cuts Application Rate In Half? Drs. R.K. Roberts, D.C. Gerloff, D.D. Howard Could be, say University of Tennessee researchers who set up models comparing broadcasting with injecting UAN in no-till corn. Issue 10, Vol. 3, No. 3 - Summer 1995 - Pages 11-13 (PDF, 2 pages, 16.0 KB)

Injection Is Most Effective Method Of UAN Placement C.L. Mann and Drs. D.B. Mengel and S.E. Hawkins Comparison trials show effects of timing, application methods, and nitrification inhibitors on no-till corn yields. Issue 10, Vol. 3, No. 3 - Summer 1995 - Pages 24-27 (PDF, 3 pages, 18.8 KB)

Nitrogen Management Key In Conservation Tillage Crop Production Dr. Donald J. Eckert Ohio studies show that method and timing of N placement have an effect on N-use efficiency. Issue 8, Vol. 3, No. 1 - Winter 1995 - Pages 11-13 (PDF, 3 pages, 380 KB)

Nitrogen Fluids Improve Yield And Quality Of Wheat Dr. P.S. Kettlewell and Jane M. Cooper Soil-applied and foliar N applications show positive responses in UK winter wheat studies. Issue 7, Vol. 2, No. 4 - Fall 1994 - Pages 24-26 (PDF, 2 pages, 14.7 KB)

Extra Crop Is Payoff In Dryland No-Till Intensified Cropping System Dr. D.G. Westfall, Dr. G.A. Peterson, R.L. Kolberg, L. Sherrod N management improves in dryland no-till production system where cropping intensity is increased versus traditional wheat-fallow system. Issue 6, Vol. 2, No. 3 - Summer 1994 - Pages 18-20 (PDF, 3 pages, 22.3 KB)

Less Than Optimum N Rates? Dr. D.H. Sander Perhaps. Nebraska researcher warns that reducing N rate much below optimum would produce unacceptable yield and income losses for producer and drive up food prices. Issue 6, Vol. 2, No. 3 - Summer 1994 - Pages 22-23 (PDF, 2 pages, 25.8 KB)

Chlorophyll Meter Promising As Tool For Nitrogen Management Chad Berghoefer and Dr. Randy Killorn But variances in weather and hybrids make it difficult to develop a standard critical level. Issue 6, Vol. 2, No. 3 - Summer 1994 - Pages 9-11 (PDF, 3 pages, 58.7 KB)

Fluids Shine In Ammonia Volatilization Comparisons Dr. Richard H. Fox and William P. Piekielek Test in no-till cornfields in central Pennsylvania compare UAN with urea. Issue 5, Vol. 2, No. 2 - Winter 1994 - Pages 20-21 (PDF, 2 pages, 11.7 KB)

N Rate Hybrid And Plant Population Affect Corn Yield Drs. P.R. Thomison, J.W. Johnson and D.J. Eckert Studies conducted over three-year span in eight different environments. Issue 5, Vol. 2, No. 2 - Winter 1994 - Pages 22-23 (PDF, 2 pages, 12.5 KB)

Effective Nitrogen Management Staff Report N-use efficiency/environmental safety hinge on how well this mobile nutrient is managed. Issue 5, Vol. 2, No. 2 - Winter 1994 - Pages 24-26 (PDF, 2 pages, 118 KB)

More Work Needed On Alternate Furrow N Fertilization Dr. Paul W. Tracy and S.G. Hefner Improved N-use efficiency not evident in initial corn/cotton irrigation studies. Issue 2, Vol. 1, No. 2 - Late Spring 1993 - Page 22-25 (PDF, 3 pages, 22.5 KB)

In Search Of Nitrogen Efficiency Drs. James S. Schepers, Darrell G. Watts and Todd A. Peterson Nebraska MSEA project explores ways to improve crop N use efficiency. Issue 1, Vol. 1, No. 1 - Spring 1993 - Pages 18-21 (PDF, 4 pages, 25.5 KB)

Major Nutrients > Nitrogen > Back to Topics