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Agronomy Journal : Just Published

 

Accepted, edited articles are published here after author proofing to provide rapid publication and better access to the newest research in crops, soils, and agronomy. Articles are compiled into bimonthly issues at dl.sciencesocieties.org/publications/aj, which includes the complete archive. Citation | Articles posted here are considered published and may be cited by the doi.

Zhu, Q., M.J. Schlossberg, R.B. Bryant, and J.P. Schmidt. 2012. Creeping bentgrass putting green response to foliar nitrogen fertilization. Agron. J. doi:10.2134/agronj2012.0157

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Current issue: Agron. J. 107(4)



  • AGRONOMY, SOILS & ENVIRONMENTAL QUALITY

    • Bennett C. T. Macdonald, Ian J. Rochester and Anthony Nadelko
      High Yielding Cotton Produced without Excessive Nitrous Oxide Emissions

      Excessive N fertilizer use leads to enhanced nitrous oxide (N2O) emissions from cotton (Gossypium hirsutum L.) production systems. The objective of the study was to quantify nitrous oxide emissions from the ridges within a furrow-irrigated field during the growth of a cotton crop that had been fertilized with urea at 0, 120, 200, or 320 kg N ha–1. No measurements were taken from the furrows; we assumed similar N2O emissions from the furrows in this system. The N2O emissions increased exponentially with N fertilizer rate. (continued)


      doi:10.2134/agronj14.0369
      Published: June 25, 2015



    • Xianlong Peng, Yanming Yang, Cailian Yu, Linan Chen, Mingcong Zhang, Zhilei Liu, Yankun Sun, Shenguo Luo and Yuanyin Liu
      Crop Management for Increasing Rice Yield and Nitrogen Use Efficiency in Northeast China

      Poor management is the main reason for high N losses and reduced yield in rice production. Improved crop management in northeastern China is becoming increasingly important due to economic pressures in southern and central China along with rising temperatures in the Northeast, which have led to a major shift in rice (Oryza sativa L.) production to this region. Here, we examine the opportunities for improving the yield and nitrogen use efficiency (NUE) of irrigated rice in northeastern China by optimizing nutrients and increasing the transplanting density. In 2009 to 2011, field experiments were conducted to compare optimized nutrient management (ONM) and optimized crop management treatments (OCM) with the farmers’ crop management (FCM) and no N treatment (control). (continued)


      doi:10.2134/agronj15.0013
      Published: June 25, 2015



  • BIOFUELS

    • Jacob M. Jungers, Adam T. Clark, Kevin Betts, Margaret E. Mangan, Craig C. Sheaffer and Donald L. Wyse
      Long-Term Biomass Yield and Species Composition in Native Perennial Bioenergy Cropping Systems

      Biomass yield is an important factor when recommending native perennial plants and mixtures for bioenergy production. Our objective was to determine long-term biomass yields in fertilized and unfertilized native plant monocultures and mixtures that show promise for bioenergy across diverse environments in the Upper Midwest. We measured biomass yields, species composition, and diversity annually in monocultures and mixtures ranging from 4 to 24 planted species including grasses, legumes, and other forbs; each managed with and without 67 kg N ha–1 fertilizer applied annually at nine locations for 7 yr. Without N fertilization, switchgrass (Panicum virgatum L.) monocultures and an eight-species mixture of grasses and legumes produced the most biomass over locations and years (5.1 Mg ha–1). (continued)


      doi:10.2134/agronj15.0014
      Published: June 25, 2015



  • CROP ECOLOGY & PHYSIOLOGY

    • Ruth E. Shaw and Wayne S. Meyer
      Improved Empirical Representation of Plant Responses to Waterlogging for Simulating Crop Yield

      Waterlogging causes apparent reductions in crop yields around the world. Crops undergo plant responses and adaptations due primarily to the reduction in soil oxygen concentrations in the plant root zone that occur during waterlogged conditions. Current methods of assessing and quantifying crop yield reductions due to waterlogging, such as the sum of excess water (SEW) and stress day index (SDI) accumulating methods, and the models DRAINMOD, Agricultural Production Systems Simulator (APSIM), and Salt Water And Groundwater MANagement (SWAGMAN) Destiny (Destiny) do not include plant physiological adaptation processes that may limit or avoid reductions in crop yield. This paper analyses results from field trials to create a unifying concept that recognizes the various responses and adaptations of crops to waterlogging. (continued)


      doi:10.2134/agronj14.0625
      Published: June 25, 2015



    • Grace M. Bluck, Laura E. Lindsey, Anne E. Dorrance and James D. Metzger
      Soybean Yield Response to Rhizobia Inoculant, Gypsum, Manganese Fertilizer, Insecticide, and Fungicide

      From 2000 to 2013, soybean [Glycine max (L.) Merr] grain commodity price increased by almost 300% generating interest in inputs to maximize yield. The objective of this study was to evaluate the effect of commonly sold inputs on soybean grain yield in enhanced (high-input) and traditional (low-input) production systems. Inputs evaluated included: Rhizobia inoculant, gypsum, Mn fertilizer, insecticide, and fungicide. A 16 site-year trial was established in Ohio during 2013 and 2014. (continued)


      doi:10.2134/agronj15.0094
      Published: July 2, 2015



  • CROP ECONOMICS, PRODUCTION & MANAGEMENT

    • Chang-An Liu and Kadambot H.M. Siddique
      Does Plastic Mulch Improve Crop Yield in Semiarid Farmland at High Altitude?

      Crop yields have increased greatly due to the use of plastic-film mulching in dryland areas of China at low to mid-altitudes. However, its effect at high altitude remains unknown. We studied the effect of ridge–furrow with plastic-mulching practices on crop yields in semiarid farmland at high altitude (2400 m) from 2010 to 2011. The three treatments were as follows: (i) flat plot with no mulching (CK); (ii) alternating ridges (60-cm wide, 15-cm high) and furrows (60-cm wide) without plastic film (RF); and (iii) alternating ridges (60-cm wide, 15-cm high) and furrows (60-cm wide), with the ridges mulched with plastic film (RFM). (continued)


      doi:10.2134/agronj15.0052
      Published: June 25, 2015



    • Brian K. Northupl and Srinivas C. Rao
      Green Manures in Continuous Wheat Systems Affect Grain Yield and Nitrogen Content

      Continuous winter wheat (Triticum aestivum L. em Thell.) is the foundation for most US Southern Great Plains (SGP) agriculture. Inorganic N fertilizers are important to wheat production, but increasing N prices have caused producers to reconsider growing legumes during summer fallow for green N. This study was conducted during 2008 to 2012 to determine the potential for using lablab [Lablab purpureus (L.) Sweet cv. (continued)


      doi:10.2134/agronj14.0428
      Published: June 25, 2015



    • B. Lal, B. B. Panda, Priyanka Gautam, R. Raja, Teekam Singh, S. Mohanty, Md. Shahid, R. Tripathi, Anjani Kumar and A. K. Nayak
      Input–Output Energy Analysis of Rainfed Rice-Based Cropping Systems in Eastern India

      Crop and cultivar diversification in cropping systems may improve crop productivity and energy efficiency along with the sustainability of agricultural production in eastern India, but the choices may be made based on the cropping area. This study was conducted to examine the energy input–output relationship, energy requirement, and system productivity of rainfed rice (Oryza sativa L.) based cropping systems (Swarna rice–Annada rice–black gram [Vigna mungo (L.) Hepper var. mungo], Naveen rice–toria [Brassica rapa L. ssp. (continued)


      doi:10.2134/agronj14.0313
      Published: July 2, 2015



    • Diego N. L. Pequeno, Carlos G. S. Pedreira, Lynn E. Sollenberger, Ana F. G. de Faria and Liliane S. Silva
      Forage Accumulation and Nutritive Value of Brachiariagrasses and Tifton 85 Bermudagrass as Affected by Harvest Frequency and Irrigation

      Brachiaria and Cynodon are important pasture grasses in Brazil. Convert HD 364 (Dow AgroSciences, São Paulo, Brazil) brachiariagrass (Brachiaria hybrid CIAT 36061; also known as Mulato II) is a new hybrid released for use in a broad range of environments. It has high nutritive value and yield, but there are no year-round comparisons, including the dry season, with other pasture grasses. Forage accumulation and crude protein (CP), neutral detergent fiber (NDF), and in vitro digestible organic matter (IVDOM) concentrations were evaluated for Convert HD 364, Marandu palisadegrass {B. (continued)


      doi:10.2134/agronj15.0115
      Published: July 2, 2015



    • Joe K. Lowe, Christopher N. Boyer, Andrew P. Griffith, Gary E. Bates, Patrick D. Keyser, John C. Waller, James A. Larson and William M. Backus
      Profitability of Beef and Biomass Production from Native Warm-Season Grasses in Tennessee

      Native warm-season grasses (NWSGs) have demonstrated potential to reduce summer forage variability, and furthermore, there has been growing interest in the use of NWSGs as lignocellulosic biomass crops. The objective of this research was to determine if there was a difference in net returns for full-season summer grazing beef steers (Bos taurus) on three NWSGs. Additionally, the expected price for biomass that a beef producer would need to break even between using the dual-purpose early-season grazing and biomass system and the full-season grazing system was calculated for these three NWSGs. Weaned beef steers grazed switchgrass (Panicum virgatum L.) (SG), a big bluestem (Andropogon gerardi Vitman) and indiangrass [Sorghastrum nutans (L.) Nash] mixture (BBIG), and eastern gamagrass [Tripsacum dactyloides (L.) L.] at Grand Junction (AP) and Highland Rim (HR), TN, from 2010 to 2012. (continued)


      doi:10.2134/agronj15.0083
      Published: July 2, 2015



  • ORGANIC AGRICULTURE & AGROECOLOGY

    • Sarah E. Eichler Inwood, Gary E. Bates and David M. Butler
      Forage Performance and Soil Quality in Forage Systems under Organic Management in the Southeastern United States

      Interest is increasing in organic forage production and sod-based rotations in the southeastern United States, but research-based information is limited. A replicated field study was established to evaluate productivity and soil quality changes in five organically-managed forage systems over 2 yr. Systems included four regionally-adapted perennial systems and one warm- and cool-season annual rotation: (i) alfalfa (Medicago sativa L.), (ii) red clover (Trifolium pratense L.), (iii) alfalfa/orchardgrass (Dactylis glomerata L.), (iv) red clover/orchardgrass, and (v) an annual system of wheat (Triticum aestivum L.)/crimson clover (T. incarnatum L.) followed by sorghum–sudangrass [Sorghum bicolor × S. (continued)


      doi:10.2134/agronj14.0472
      Published: June 25, 2015



  • SOIL FERTILITY & CROP NUTRITION

    • Alan J. Schlegel, Yared Assefa, H. Dewayne Bond, Scott M. Wetter and Loyd R. Stone
      Corn Response to Long-Term Applications of Cattle Manure, Swine Effluent, and Inorganic Nitrogen Fertilizer

      Cattle (Bos taurus) manure and swine (Sus scrofa) effluent are applied to cropland to recycle nutrients, build soil quality, and increase crop productivity. The objective of this study was to determine the long-term effects of land application of cattle manure and swine effluent using the Kansas Nutrient Utilization Plan on crop yield, yield components, and crop nutrient uptake. The study was conducted for 10 yr (1999 through 2008) near Tribune, KS. There were 10 treatments: three levels of cattle manure and swine effluent (P, N, and 2N), three levels of N fertilizer (N1 = 56, N2 = 112, and N3 = 168 kg N ha–1), and an untreated control. (continued)


      doi:10.2134/agronj14.0632
      Published: June 25, 2015



    • Adrien N’Dayegamiye, Joann K. Whalen, Gilles Tremblay, Judith Nyiraneza, Michèle Grenier, Anne Drapeau and Marie Bipfubusa
      The Benefits of Legume Crops on Corn and Wheat Yield, Nitrogen Nutrition, and Soil Properties Improvement

      Legume crops leave N-rich residues and improve soil properties that can boost the yield of subsequent crops. This study conducted at two sites in Québec, eastern Canada, identified the most appropriate preceding legume crops for subsequent corn (Zea mays L.) and wheat (Triticum aestivum L.) yield and N nutrition. Legumes were established in 2011, in monoculture or mixed with grain crops, for a total of 13 treatments: common bean (Phaseolus vulgaris L.), soybean (Glycine max L.), dry pea (Pisum sativum L.), hairy vetch (Vicia villosa Roth), alfalfa (Medicago sativa L.), and crimson clover (Trifolium incarnatum L.), hairy vetch/wheat, crimson clover/wheat, field pea/wheat, alfalfa/corn, hairy vetch/corn, crimson clover/corn) and a non-N fixing crop (corn) as the control. In 2012, each plot was split and five N fertilizer rates applied to corn and wheat. (continued)


      doi:10.2134/agronj14.0416
      Published: June 25, 2015



    • Eugenia M. Pena-Yewtukhiw, John H. Grove and Gregory J. Schwab
      Fertilizer Nitrogen Rate Prescription, Interpretational Algorithms, and Individual Sensor Performance in an Array

      Many sensors require algorithms/mathematical functions to translate measurements into practical outcomes. In arrays (sensor groups), the agronomic consequences of variations in individual unit performance, while driving an algorithm, remains uncharacterized. Our objective was to study the performance of individual active canopy reflectance sensors outputting normalized difference vegetative index (NDVI) data, used to prescribe the corrective N fertilization rate for winter wheat (Triticum aestivum L.). We hypothesized that sensor output differences would influence corrective N prescriptions when the NDVI data were interpreted with the usual discontinuous, “stair-step”, algorithms. (continued)


      doi:10.2134/agronj14.0573
      Published: June 25, 2015



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