About Us | Help Videos | Contact Us | Subscriptions
 

Table of Contents

 
 

Volume 109 Issue 3, May-June 2017



Hide Details
  • REVIEW & INTERPRETATION up

    • Minoru Yamauchi
      A Review of Iron-Coating Technology to Stabilize Rice Direct Seeding onto Puddled Soil
      Core Ideas
      • The innovation of rice direct seeding with Fe-coated seeds was analyzed.
      • The Fe-coated seeds were prepared through the oxidation of reduced Fe on husks.
      • The high-density Fe-coated seeds are resistant to birds and seed-borne diseases.
      • Iron-coated seeds exhibit improved anchorage in water seeding in puddled fields.
      doi:10.2134/agronj2016.10.0569
      Agronomy Journal 2017 109:739-750
      [ Abstract ][ Full Text ] [ PDF ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
  • AGRONOMIC APPLICATION OF GENETIC RESOURCES up

    • Krishna P. Woli, John E. Sawyer, Matthew J. Boyer, Lori J. Abendroth and Roger W. Elmore
      Corn Era Hybrid Dry Matter and Macronutrient Accumulation across Development Stages
      Core Ideas
      • Evaluating corn dry matter and macronutrient accumulation patterns across era hybrids is necessary to understand changes in plant nutrient requirements and effects on accumulation timing and fertilization management.
      • Era hybrids differed in dry matter and nutrient accumulation, with differences in nutrient content mainly related to dry matter production.
      • Dry matter and P accumulation was linear, however, N and K accumulation slowed during the reproductive stages.
      • Although the absolute dry matter production and nutrient content was greater with the most recent hybrids, relative to the maximum dry matter and N, P, and K content and the accumulation rate (cumulative growing degree unit-based) remained the same across era hybrids.
      • Results indicate that overall dry matter production and yield potential has been mainly responsible for changes in corn macronutrient requirements with development of new hybrids.
      doi:10.2134/agronj2016.08.0474
      Agronomy Journal 2017 109:751-761
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Rachel Soares Ramos, Bruno Portela Brasileiro, Luis Claudio Inácio da Silveira, Volmir Kist, Luiz Alexandre Peternelli and Márcio Henrique Pereira Barbosa
      Selecting Parents, Families, and Clones to Obtain Energy Cane
      Core Ideas
      • The results presented the possibility of selection of energy cane clones.
      • Develop energy cane clones with high fiber contents, involving Saccharum spontaneum accesses.
      • We found clones with high fiber content and high sucrose levels.
      doi:10.2134/agronj2016.09.0489
      Agronomy Journal 2017 109:762-768
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • AGRONOMY, SOILS & ENVIRONMENTAL QUALITY up

    • Zaid Bello, Leon Van Rensburg and Phesheya Dlamini
      Response of Glasshouse Grown Malt Barley Yield to Water Stress
      Core Ideas
      • Malt barley was subjected to water stress at different growth stages.
      • The yield and yield components were used to evaluate the effect of water stress on barley.
      • Effect of water stress at anthesis growth stage is more pronounced than in other growth stages.
      doi:10.2134/agronj2016.05.0280
      Agronomy Journal 2017 109:769-781
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Lance S. Conway, Matt A. Yost, Newell R. Kitchen, Kenneth A. Sudduth, Allen L. Thompson and Raymond E. Massey
      Topsoil Thickness Effects on Corn, Soybean, and Switchgrass Production on Claypan Soils
      Core Ideas
      • Grain relative yield increased with depth to claypan, while switchgrass relative yield was unaffected.
      • Grain yield was twice as temporally variable as switchgrass yield.
      • Grain crops generally were more profitable than switchgrass across depth to claypan.
      • Switchgrass has the capacity to reduce yield variability caused by depth to claypan.
      doi:10.2134/agronj2016.06.0365
      Agronomy Journal 2017 109:782-794
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Sarah E. Lyons, Quirine M. Ketterings, Greg Godwin, Jerome H. Cherney, Karl J. Czymmek and Tom Kilcer
      Early Fall Planting Increases Growth and Nitrogen Uptake of Winter Cereals
      Core Ideas
      • Double cropping of forages can increase yield per ha and reduce nutrient loss.
      • Timely planted winter cereals can take up N leftover from the summer crop.
      • Timely planted winter cereals also provide a safe window for fall-applied manure.
      • Late planting of winter cereals in corn silage rotations will limit fall N uptake.
      doi:10.2134/agronj2016.10.0620
      Agronomy Journal 2017 109:795-801
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • John E. Sawyer, Krishna P. Woli, Daniel W. Barker and Jose L. Pantoja
      Stover Removal Impact on Corn Plant Biomass, Nitrogen, and Use Efficiency
      Core Ideas
      • Corn stover has many uses, including recent interest for cellulosic bioenergy production.
      • For corn stover use in ethanol production, an increased understanding is needed of plant component biomass and N content within a stover harvest system, and the impact on N cycling and corn N use.
      • Improving N use efficiency in corn is important for optimizing yield and reducing environmental impacts.
      doi:10.2134/agronj2016.11.0672
      Agronomy Journal 2017 109:802-810
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Get Permissions ]
  • BIOFUELS up

    • J. Xu, M. Gauder, S. Gruber and W. Claupein
      Yields of Annual and Perennial Energy Crops in a 12-year Field Trial
      Core Ideas
      • A long-term field trial of important perennial and annual energy crops was conducted.
      • Maize is most high yielding of biomass with high N inputs.
      • Miscanthus is most high yielding of biomass without or with moderate N inputs.
      • In crop rotations, no-till practice with less input does not reduce the productivity.
      • Nitrogen input is more important in annuals than perennials to maintain the yield level.
      doi:10.2134/agronj2015.0501
      Agronomy Journal 2017 109:811-821
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Cynthia A. Bartel, Chumki Banik, Andrew W. Lenssen, Kenneth J. Moore, David A. Laird, Sotirios V. Archontoulis and Kendall R. Lamkey
      Establishment of Perennial Groundcovers for Maize-Based Bioenergy Production Systems
      Core Ideas
      • Assessment of living mulch establishment in soybean and maize row crop systems.
      • Differences in elite soybean and maize germplasm responses to living mulch.
      • Impact of living mulch establishment on soybean and maize production.
      doi:10.2134/agronj2016.11.0656
      Agronomy Journal 2017 109:822-835
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Ben W. Thomas, Xiaomei Li, Virginia Nelson and Xiying Hao
      Anaerobically Digested Cattle Manure Supplied More Nitrogen with Less Phosphorus Accumulation than Undigested Manure
      Core Ideas
      • Barley recovered 19% of N applied by anaerobically digested cattle manure over 4 yr.
      • Barley recovered 10% of N applied by undigested cattle manure over 4 yr.
      • Separated solids and cattle manure supplied similar amounts of N and P to barley.
      • Pelletized separated solids released N too slowly for a barley yield benefit.
      • Separated solids posed a greater risk of P accumulation than cattle manure.
      doi:10.2134/agronj2016.12.0719
      Agronomy Journal 2017 109:836-844
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
  • BIOMETRY, MODELING & STATISTICS up

    • Tigist Mideksa Damesa, Jens Möhring, Mosisa Worku and Hans-Peter Piepho
      One Step at a Time: Stage-Wise Analysis of a Series of Experiments
      Core Ideas
      • Single-stage and two-stage analysis of multienvironment trials yield very similar results.
      • Single-stage and two-stage analysis are identical when the same set of variance values is used.
      • Modeling genotypes as random helps to exploit correlations between agro-ecological zones.
      • In stage-wise analysis, genotypes need to be taken as fixed through all stages except the last.
      • Fully efficient two-stage analysis is similar in spirit to meta-analysis.
      doi:10.2134/agronj2016.07.0395
      Agronomy Journal 2017 109:845-857
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      [ Supplement 1 ] [ Supplement 2 ] [ Supplement 3 ] [ Supplement 4 ] [ Supplement 5 ]
    • Raghuveer Sripathi, Patrick Conaghan, Dermot Grogan and Michael D. Casler
      Field Design Factors Affecting the Precision of Ryegrass Forage Yield Estimation
      Core Ideas
      • The row-column designs were 36% more efficient than the randomized complete block designs.
      • The impact of block size and number of replicates on trial precision was dependent on block shape.
      • Increasing number of replicates decreased LSD only in wider blocks compared to narrow blocks.
      doi:10.2134/agronj2016.07.0397
      Agronomy Journal 2017 109:858-869
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Timothy Schwinghamer, Rachel Backer, Donald Smith and Pierre Dutilleul
      Block-Recursive Path Models for Rooting-Medium and Plant-Growth Variables Measured in Greenhouse Experiments
      Core Ideas
      • Path analysis reveals multidirectional causal relationships in systems of variables.
      • Variable selection and model modification result in plausible path diagrams.
      • Softwood biochar water-extractable components enhance corn P uptake and root length.
      • Biochar water and nutrient holding capacities positively affect corn N and Ca uptake.
      • WEBC and WNHC directly affect corn dry weight and K content, in opposite ways.
      doi:10.2134/agronj2016.08.0473
      Agronomy Journal 2017 109:870-882
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Paul D. Colaizzi, Steven R. Evett, David K. Brauer, Terry A. Howell, Judy A. Tolk and Karen S. Copeland
      Allometric Method to Estimate Leaf Area Index for Row Crops
      Core Ideas
      • A new allometric method was developed to estimate LAI for row crops.
      • Good agreement resulted for four crops over multiple seasons.
      • Best agreement resulted using GDD, plant population, and canopy height.
      doi:10.2134/agronj2016.11.0665
      Agronomy Journal 2017 109:883-894
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
  • CROP ECOLOGY & PHYSIOLOGY up

    • Wellison Filgueiras Dutra, Alberto Soares de Melo, Janivan Fernandes Suassuna, Alexson Filgueiras Dutra, Duval Chagas da Silva and Josemir Moura Maia
      Antioxidative Responses of Cowpea Cultivars to Water Deficit and Salicylic Acid Treatment
      Core Ideas
      • Performance of salicylic acid to reduce the effects of water deficit in cowpea seedlings.
      • Oxidative protection in cowpea seedlings under water deficit.
      • Salicylic acid improve the biochemical metabolism in cowpea seedlings.
      • The cowpea cultivar BRS Itaim is suitable for semiarid regions by its tolerance to water deficit.
      doi:10.2134/agronj2015.0519
      Agronomy Journal 2017 109:895-905
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Huan Yang, Tianqi Huang, Mengqiu Ding, Dalei Lu and Weiping Lu
      High Temperature during Grain Filling Impacts on Leaf Senescence in Waxy Maize
      Core Ideas
      • Heat stress decreased the translocation of dry matter from vegetative organs after pollination.
      • Heat stress during grain filling accelerated leaf senescence of waxy maize.
      • This study provides leaf senescence and dry matter translocation data for waxy maize production.
      doi:10.2134/agronj2016.08.0452
      Agronomy Journal 2017 109:906-916
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Elise W. Connor, Moriah Sandy and Christine V. Hawkes
      Microbial Tools in Agriculture Require an Ecological Context: Stress-Dependent Non-Additive Symbiont Interactions
      Core Ideas
      • Leaf fungal symbionts represent a potential new tool in agriculture.
      • Effective fungal application requires an understanding of their interactions.
      • Fungal interactions resulted in non-additive plant growth and wilt responses.
      • Fungal metabolites indicated qualitative additive, synergistic, or antagonistic plant responses.
      • Fungal trait dissimilarity predicted the size of plant response deviations.
      doi:10.2134/agronj2016.10.0568
      Agronomy Journal 2017 109:917-926
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      [ Supplement 1 ]
    • Duli Zhao, Mike Irey, Chris LaBorde and Chen-Jian Hu
      Identifying Physiological and Yield-Related Traits in Sugarcane and Energy Cane
      Core Ideas
      • Energy cane may be an alternative crop on sand soils in the future to improve profits.
      • It is unclear if energy cane differs from sugarcane in physiology and yield on sand soils.
      • Energy cane had 26 to 35% greater normalized difference vegetation index and 21% higher yield than sugarcane.
      • Increased yield of energy cane was associated with great normalized difference vegetation index and high stalk population rather than leaf net photosynthetic rate.
      doi:10.2134/agronj2016.10.0585
      Agronomy Journal 2017 109:927-937
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • CROP ECONOMICS, PRODUCTION & MANAGEMENT up

    • Amanda J. Ashworth, Fred L. Allen, Arnold M. Saxton and Donald D. Tyler
      Impact of Crop Rotations and Soil Amendments on Long-Term No-Tilled Soybean Yield
      Core Ideas
      • Poultry litter increased yields by 11% across locations and years when compared to wheat cover crops.
      • Yields in soybean–soybean–corn–cotton rotations during Phase II and corn–corn–soybean–corn during Phase I were greatest.
      • Incorporating corn once within a 4-yr cropping cycle resulted in 8% greater yields than continuous soybean.
      • Continuous cropping systems without cover crops are often perceived as unsustainable for long-term yields and soil health.
      doi:10.2134/agronj2016.04.0224
      Agronomy Journal 2017 109:938-946
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
    • Augustine K. Obour, Eric Obeng, Yesuf A. Mohammed, Ignacio A. Ciampitti, Timothy P. Durrett, Jose A. Aznar-Moreno and Chengci Chen
      Camelina Seed Yield and Fatty Acids as Influenced by Genotype and Environment
      Core Ideas
      • Genotype × environment affected camelina seed yield, oil and constituent fatty acids.
      • Blaine Creek produced the greatest seed among the camelina genotypes studied.
      • Camelina grown at Hays, KS, had less yields and oil content compared to Moccasin, MT.
      • Camelina at Moccasin, MT had greater linolenic acid content compared to Hays, KS.
      doi:10.2134/agronj2016.05.0256
      Agronomy Journal 2017 109:947-956
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
    • Elwin G. Smith, Robert P. Zentner, Con A. Campbell, Reynald Lemke and Kelsey Brandt
      Long-Term Crop Rotation Effects on Production, Grain Quality, Profitability, and Risk in the Northern Great Plains
      Core Ideas
      • Diversified rotations are more productive and profitable than cereal only rotations.
      • Fallow rotations are less profitable than continuous cropping in the Northern Plains.
      • Continuous cropping is riskier; however, it is preferred when averse to risk.
      doi:10.2134/agronj2016.07.0420
      Agronomy Journal 2017 109:957-967
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Seth R. Appelgate, Andrew W. Lenssen, Mary H. Wiedenhoeft and Thomas C. Kaspar
      Cover Crop Options and Mixes for Upper Midwest Corn–Soybean Systems
      Core Ideas
      • Cover crop mixtures did not provide benefits beyond cover crop monocultures.
      • Cover crops did not influence soil temperature, soil P or K concentrations, or corn yield.
      • Cover crops did not influence weed density or weed community in subsequent corn.
      doi:10.2134/agronj2016.08.0453
      Agronomy Journal 2017 109:968-984
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Matt A. Yost, Newell R. Kitchen, Kenneth A. Sudduth, Allen L. Thompson and Eric Allphin Jr.
      Topsoil Thickness and Harvest Management Influence Switchgrass Production and Profitability
      Core Ideas
      • Topsoil thickness, or depth to claypan, mainly affected the biomass harvest of the integrated system.
      • The integrated system had greater weed cover, less yield, more N, P, and K removal, and less profit than the biomass only system.
      • The only advantage of the integrated system was enhanced yield resiliency in an extreme drought year.
      doi:10.2134/agronj2016.09.0561
      Agronomy Journal 2017 109:985-994
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      [ Supplement 1 ]
    • Alyssa S. DuVal, Thomas G. Chastain, Carol J. Garbacik and Donald J. Wysocki
      Nitrogen Affects Seed Production Characteristics in Yellow Mustard
      Core Ideas
      • Applied N increased seed and oil yield in yellow mustard in a high rainfall environment.
      • Seeds m–2 was the most influential factor in determining seed yield in yellow mustard.
      • Applied N increased height, biomass, tissue N content, leaf area index, and crop growth rate.
      doi:10.2134/agronj2016.10.0587
      Agronomy Journal 2017 109:995-1004
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Jesse C. Cameron, R. Michael Lehman, Peter Sexton, Shannon L. Osborne and Wendy I. Taheri
      Fungicidal Seed Coatings Exert Minor Effects on Arbuscular Mycorrhizal Fungi and Plant Nutrient Content
      Core Ideas
      • Seed-applied fungicides may inhibit arbuscular mycorrhizal fungi and plant nutrient content.
      • Non-target effects of seed applied fungicides may vary with crop and genotype.
      • No negative effects of seed applied fungicides on arbuscular mycorrhizal fungi were found.
      • Plant genotype affected arbuscular mycorrhizal fungal colonization and plant nutrient content more than fungicide.
      doi:10.2134/agronj2016.10.0597
      Agronomy Journal 2017 109:1005-1012
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      [ Supplement 1 ]
  • ORGANIC AGRICULTURE & AGROECOLOGY up

    • C. J. Lowry and D. C. Brainard
      Rye–Vetch Spatial Arrangement and Tillage: Impacts on Soil Nitrogen and Sweet Corn Roots
      Core Ideas
      • Strip-tillage decreased soil inorganic N within a rye–vetch organic system, but had minimal effect on sweet corn yield.
      • Strip-intercropping rye–vetch increased N availability within the crop row of strip-tillage.
      • Strip-intercropping rye–vetch decreased root mass within the row, but had no effect on yield or shoot biomass.
      doi:10.2134/agronj2016.09.0507
      Agronomy Journal 2017 109:1013-1023
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • PEST INTERACTIONS IN AGRONOMIC SYSTEMS up

    • Kun Jun Han and Edward K. Twidwell
      Herbage Mass and Nutritive Value of Bermudagrass Influenced by Non-Growing-Season Herbicide Application
      Core Ideas
      • Dormant-season herbicide applications are effective in controlling cool-season weeds in bermudagrass.
      • Some dormant-season herbicide products can negatively impact bermudagrass forage production.
      • Dormant-season application of glyphosate did not cause significant damage to the bermudagrass stand.
      • Elimination of cool-season weeds in bermudagrass may not always be advantageous.
      doi:10.2134/agronj2016.07.0408
      Agronomy Journal 2017 109:1024-1030
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • SOIL FERTILITY & CROP NUTRITION up

    • Mary Leggett, Martin Diaz-Zorita, Marja Koivunen, Roger Bowman, Robert Pesek, Craig Stevenson and Todd Leister
      Soybean Response to Inoculation with Bradyrhizobium japonicum in the United States and Argentina
      Core Ideas
      • Soybean seed inoculation with Bradyrhizobium japonicum enhances grain production.
      • Greater inoculation response happens in Argentinean sites than in the United States.
      • Several soil properties and crop management practices are related with the responses to inoculation.
      doi:10.2134/agronj2016.04.0214
      Agronomy Journal 2017 109:1031-1038
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Get Permissions ]
      unlockOPEN ACCESS
    • Paulo Sergio Pavinato, Marcos Rodrigues, Amin Soltangheisi, Laércio Ricardo Sartor and Paul John Anthony Withers
      Effects of Cover Crops and Phosphorus Sources on Maize Yield, Phosphorus Uptake, and Phosphorus Use Efficiency
      Core Ideas
      • Phosphorus recycling by cover crops in a typical Brazilian cropping system.
      • Maize response to phosphate sources under no-till management.
      • Residual effects of phosphate sources in tropical weathered soils.
      • Rock phosphate was more effective than soluble phosphate in supplying P for maize over time.
      doi:10.2134/agronj2016.06.0323
      Agronomy Journal 2017 109:1039-1047
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Apurba K. Sutradhar, Daniel E. Kaiser and Lisa M. Behnken
      Soybean Response to Broadcast Application of Boron, Chlorine, Manganese, and Zinc
      Core Ideas
      • Application of B, Cl, and Zn increase soybean tissue concentration of each respective nutrient.
      • Addition of B, Cl, Mn, and Zn do not increase soybean grain yield and have a marginal impact on soybean grain quality.
      • Soil tests for B, Cl, and Zn do not predict soybean grain yield response and no relationships exist between trifoliate B, Cl, Mn, and Zn concentration to grain yield or their respective soil tests.
      • It is unlikely that micronutrients are needed to increase soybean grain yield.
      doi:10.2134/agronj2016.07.0389
      Agronomy Journal 2017 109:1048-1059
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Kevin F. Bronson, Jeffrey W. White, Matthew M. Conley, Doug J. Hunsaker, Kelly R. Thorp, Andrew N. French, Bruce E. Mackey and Kyle H. Holland
      Active Optical Sensors in Irrigated Durum Wheat: Nitrogen and Water Effects
      Core Ideas
      • Interest in the use of active optical sensors for guiding N fertilizer management of crops like wheat has grown rapidly since the mid-1990s. Recently, active optical sensors have been used to assess water status of crops in addition to plant N status.
      • We conducted a 2-yr study on a Casa Grande sandy loam soil in Maricopa, AZ, with durum wheat under an overhead sprinkler system. Uniquely, this study had 10 unrandomized levels of irrigation and five rates of N fertilizer.
      • The objectives were to compare 12 vegetation indices for their ability to distinguish irrigation and N fertilizer rates and to determine how well the vegetation indices estimated biomass, plant N, grain yield, grain N, and yellow berry.
      • The canopy chlorophyll content index, Datt, and Meris terrestrial chlorophyll index were the most consistent vegetation indices in responding well to N, with minimal water effects. No vegetation indices detected water stress with minimal N effect as well as canopy temperature measured with infrared thermometers.
      doi:10.2134/agronj2016.07.0390
      Agronomy Journal 2017 109:1060-1071
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Yi Zhou, Peter Hooper, David Coventry and Matthew D. Denton
      Strategic Nitrogen Supply Alters Canopy Development and Improves Nitrogen Use Efficiency in Dryland Wheat
      Core Ideas
      • Strategic application of N fertilizer produced a thinner and more open crop canopy.
      • The smaller canopy delayed demand for soil moisture.
      • The smaller canopy reduced shoot mortality and increased harvest index.
      • Higher N uptake from sowing N application did not result in more harvest N.
      doi:10.2134/agronj2016.08.0458
      Agronomy Journal 2017 109:1072-1081
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      [ Supplement 1 ]
    • J. J. Zhang, P. He, X. P. Xu, Y. L. Wang, L. L. Jia, R. Z. Cui, H. T. Wang, S. C. Zhao and S. Ullah
      Nutrient Expert Improves Nitrogen Efficiency and Environmental Benefits for Summer Maize in China
      Core Ideas
      • Nutrient expert is a nutrient decision support tool and this study confirmed that it could be used in north-central China.
      • The continual performance of nutrient expert was evaluated through multiple-point field experiments.
      • This is the first report of nutrient expert on improving environmental benefits of summer maize.
      doi:10.2134/agronj2016.08.0477
      Agronomy Journal 2017 109:1082-1090
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Get Permissions ]
    • Fernando D. Hansel, Dorivar A. Ruiz Diaz, Telmo J. C. Amado and Luiz H. M. Rosso
      Deep Banding Increases Phosphorus Removal by Soybean Grown under No-Tillage Production Systems
      Core Ideas
      • Deep band P is a potential strategy to reduce P losses by runoff.
      • Deep band P improve soil fertility in subsurface in no-till system.
      • Greater amount of P removed with grain compared to the total P input.
      doi:10.2134/agronj2016.09.0533
      Agronomy Journal 2017 109:1091-1098
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS
    • J. K. Yarborough, J. M. B. Vendramini, M. L. Silveira, L. E. Sollenberger, R. G. Leon, J. M. D. Sanchez, F. C. Leite de Oliveira, F. A. Kuhawara, V. Gomes, U. Cecato and C. V. Soares Filho
      Impact of Potassium and Nitrogen Fertilization on Bahiagrass Herbage Accumulation and Nutrient Concentration
      Core Ideas
      • Bahiagrass pastures on soils with low K concentration may not respond to K fertilization.
      • Tissue K concentration in bahiagrass is variable and dependent on fertilization levels.
      • Bahiagrass tissue K concentration of 17 g kg–1 was related to the greatest herbage accumulation in plants receiving greater levels of fertilization.
      doi:10.2134/agronj2016.10.0589
      Agronomy Journal 2017 109:1099-1105
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Mariangela Hungria, Ricardo Silva Araujo, Elson Barbosa Silva Júnior and Jerri Édson Zilli
      Inoculum Rate Effects on the Soybean Symbiosis in New or Old Fields under Tropical Conditions
      Core Ideas
      • Inoculum rate with elite strains is critical to achieve the benefits of biological N2 fixation.
      • The minimum rate of 1.2 × 106 cells of Bradyrhizobium seed–1 was determined to benefit biological N2 fixation.
      • Soybean can highly benefit from biological N2 fixation.
      • Some sites required 2.4 × 106 cells seed–1 and could respond to higher rates.
      doi:10.2134/agronj2016.11.0641
      Agronomy Journal 2017 109:1106-1112
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
    • Luma Castro de Souza, Carolina Fernandes, Deise Cristina Santos Nogueira, Mara Regina Moitinho, Elton da Silva Bicalho and Newton La Scala Jr.
      Can Partial Cultivation of Only The Sugarcane Row Reduce Carbon Dioxide Emissions in an Oxisol and Ultisol?
      Core Ideas
      • The use of soil management at line (alone) reduces the CO2 emission.
      • The higher soil aggregation favorece the higher CO2 emission.
      • The soil management at line (alone) improve the lower soil desegregation.
      doi:10.2134/agronj2016.10.0565
      Agronomy Journal 2017 109:1113-1121
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • NOTES & UNIQUE PHENOMENA up

    • Yueyue Wang, Xiao Zhang, Xinhua Xiao, Joshua Heitman, Robert Horton and Tusheng Ren
      An Empirical Calibration for Heat-Balance Sap-Flow Sensors in Maize
      Core Ideas
      • Sap flow errors with heat-balance sap-flow sensors are quantified.
      • An empirical equation is established for correcting heat-balance sap-flow measurements in maize.
      • Independent tests proved the usefulness of the calibration equation in maize.
      doi:10.2134/agronj2016.10.0611
      Agronomy Journal 2017 109:1122-1128
      [ Abstract ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
  • REPORTS up


    • ASA Yearly Reports
      doi:10.2134/agronj2017.01.09061
      Agronomy Journal 2017 109:1129-1129
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Presidents of the American Society of Agronomy
      doi:10.2134/agronj2017.01.09062
      Agronomy Journal 2017 109:1130-1130
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Reports of Editorial Committees, 2016
      doi:10.2134/agronj2017.04.0901
      Agronomy Journal 2017 109:1131-1142
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Tables Only ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Awards Presented in Agronomy, 2016
      doi:10.2134/agronj2017.04.0908
      Agronomy Journal 2017 109:1143-1149
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Fellows of the American Society of Agronomy Elected in 2016
      doi:10.2134/agronj2017.04.0907
      Agronomy Journal 2017 109:1150-1152
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Recipients of AJ Editor’s Citation for Excellence, 2016
      doi:10.2134/agronj2017.04.0910
      Agronomy Journal 2017 109:1153-1153
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Figures Only ] [ Get Permissions ]
      unlockOPEN ACCESS

    • Thanks to Our Reviewers
      doi:10.2134/agronj2017.02.0909
      Agronomy Journal 2017 109:1154-1161
      [ Preview (PDF) ][ Full Text ] [ PDF ] [ Get Permissions ]
      unlockOPEN ACCESS
  • Facebook   Twitter