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    Agrosystems, Geosciences & Environment: Volume 5, Issue 2

    2022
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COVER IMAGE

Open Access

Cover Image, Volume 5, Issue 2

  • First Published: 28 March 2022
Cover Image, Volume 5, Issue 2 Volume 5 Issue 2, 2022

On the cover: Differences in rye seeding rate treatments among plots. See Noland, “Rye grain response to nitrogen fertilizer and seeding rate,” https://doi.org/10.1002/agg2.20239. Photo by Reagan Noland.

ORIGINAL RESEARCH ARTICLES

Agrosystems

Open Access

Cover crops and landscape positions mediate corn–soybean production

Gurbir Singh,  Madhav Dhakal,  Gurpreet Kaur,  Jon E. Schoonover,  Karl W. J. Williard, 
  • First Published: 12 April 2022
Core Ideas

  • Topographic variations may affect cover crop and cash crops production.
  • Cover crops produced more biomass and retained more N at the shoulder and backslope positions.
  • Cereal rye increased the soybean yield at shoulder but not at backslope and footslope.
  • Hairy vetch increased the corn yield except at the footslope position.

Open Access

Impacts of winter grazing on soil health in southeastern cropping systems

Hayley Crowell,  Audrey V. Gamble,  Yucheng Feng,  Kipling Balkcom,  Anna Yang, 
  • First Published: 13 April 2022
Core Ideas

  • Physical and chemical soil health indicators were unaffected by grazing period.
  • Microbial biomass C was greatest in an ungrazed control treatment.
  • Cotton lint yield was improved for ungrazed and shorter grazing periods after a year.

Open Access

Genetic divergence and cluster analysis for bulb yield and related traits in garlic (Allium sativum) accessions at Dorze, southern Ethiopia

Azene Tesfaye, 
  • First Published: 26 April 2022
Core Ideas

  • The genetic divergence among garlic accessions from different parts of the country is remarkable.
  • Garlic accessions were divided into four clusters based on their 11 agronomic traits.
  • To improve garlic production through breeding, parental material was identified.
  • When it comes to hybridization, it is preferable to do it between clusters than within them.

Open Access

Responses of seed yield, quality, and composition to the harvest-aid paraquat in soybean grown in Mississippi

Nacer Bellaloui,  James R. Smith,  Jeffery D. Ray,  Alemu Mengistu,  Anne M. Gillen,  Daniel K. Fisher,  Gurbir Singh, 
  • First Published: 26 April 2022
Core Ideas

  • Application of paraquat at R7 or earlier resulted in yield loss.
  • Application of paraquat at R6 resulted in significantly higher protein, oleic acid, raffinose, and stachyose.
  • Application of paraquat at R6 resulted in significantly lower oil and sucrose.
  • New knowledge to producers about harvest-aids use is introduced.
  • Application of paraquat on seed germination was significant but inconsistent between years.

Open Access

Alfalfa forage yield, milk yield, and nutritive value under intensive cutting

James O. Eckberg,  Samantha S. Wells,  Jacob M. Jungers,  JoAnn F. S. Lamb,  Craig C. Sheaffer, 
  • First Published: 28 April 2022
Core Ideas

  • Alfalfa forage quality increased with increased cutting frequency.
  • Alfalfa cultivars were affected differently across cutting frequencies.
  • Alfalfa fall dormancy was not correlated to forage yield or persistence across cuttings.
  • Intensifying cutting frequency from four to five harvests per season can increase yield.

Open Access

Short-term impacts of cover crops in maritime potato (Solanum tuberosum) systems

Toby M. Una,  Don McMoran,  Steven S. Seefeldt,  Brian Maupin,  Elizabeth Myhre,  Deirdre Griffin-LaHue, 
  • First Published: 11 May 2022
Core Ideas

  • Cover crops that produced higher biomass more effectively suppressed weeds in both years.
  • Soil permanganate oxidizable C was influenced by sampling date but not by cover crops.
  • Soil inorganic N at midseason was not affected by cover cropping.
  • Cover crops did not affect potato tuber yield nor tuber quality.

Open Access

Effects of moisture contents in incorporated residues and soil on net nitrogen mineralization in a laboratory study

Suzette Santiago,  Daniel Geisseler, 
  • First Published: 18 May 2022
Core Ideas

  • Moisture of incorporated residues had a short-term effect on N mineralization and immobilization.
  • Soil moisture became the dominant factor determining N mineralization over time.
  • Decreasing soil and residue moisture led to decreased microbial activity.
  • Even in soil at the permanent wilting point, net N turnover took place.

Open Access

Assessment of cotton and sorghum stand establishment using UAV-based multispectral and DSLR-based RGB imagery

Madhav Dhakal,  Yanbo Huang,  Martin A. Locke,  Krishna N. Reddy,  Matthew T Moore,  L. Jason Krutz,  Drew Gholson,  Rajen Bajgain, 
  • First Published: 19 May 2022
Core Ideas

  • Utility of unmanned aerial vehicle-based multispectral imagery was compared with ImageJ-based red–green–blue analysis.
  • Five vegetation indices in broadband and 10 in narrowband spectra were evaluated.
  • Soil line narrowband indices improved predictability and accuracy of stand assessment.
  • ImageJ provided a better estimation of plant density and leaf area index than unmanned aerial vehicle-based method.

Open Access

Location, production systems, and processing method effects on qualities of Kafa Biosphere Reserve coffees

Addis Alemayehu Tassew,  Gezahegn Berecha Yadessa,  Adugna Debela Bote,  Taye Kufa Obso, 
  • First Published: 19 May 2022
Core Ideas

  • Coffee production location differences have a significant effect on bean moisture content.
  • Coffee production system effects can significantly affect the acidity of coffee cup quality.
  • Coffee processing had a significant effect on bean moisture, odor, raw, and grade.
  • The dry coffee processing method maintained cup quality of coffee better than wet methods.

Open Access

Wastewater-recycled struvite as a phosphorus source in a wheat–soybean double-crop production system in eastern Arkansas

Niyi S. Omidire,  Kristofor R. Brye, 
  • First Published: 06 June 2022
Core Ideas

  • Plant response to chemically precipitated struvite has not been evaluated in a double-crop production system.
  • A 2-yr, wheat–soybean, double-crop production system study was conducted on a silt-loam P-deficient soil.
  • Struvite response by soybean and wheat did not differ from triple superphosphate.
  • Struvite recovered from wastewater may be a viable fertilizer-P option for wheat and soybean.

Open Access

Prairie Pothole Management Support Tool: A web application for evaluating prairie pothole flood risk

Brady A. Nahkala,  Amy L. Kaleita,  Michelle L. Soupir,  Andy VanLoocke, 
  • First Published: 08 June 2022
Core Ideas

  • There are few to no decision tools to help manage farmed prairie potholes.
  • A developed web application assesses prairie pothole flood risk.
  • The app integrates a random forest machine learning model to predict flood risk.
  • The model requires topographic and land use data provided by the user.
  • The app enables assessments of alternative land management in the Prairie Pothole Region.

Environment

Open Access

Soil properties are resilient despite grass invasion, fire, and grazing

Leslie Gerhard,  Caley K Gasch,  Kevin Sedivec, 
  • First Published: 25 March 2022
Core Ideas

  • Fire and grazing were applied to Kentucky bluegrass-invaded grasslands.
  • Most carbon, nitrogen, and microbial properties did not differ between idle or treated sites.
  • Labile carbon and decomposition rates were temporarily reduced after fire.
  • Soil properties were remarkably stable in a northern prairie despite invasion and management.

Open Access

17α-Ethynylestradiol-induced changes in Brassica rapa during the seedling growth stage

Chathurika Wijewardana,  Annelise K. Gonzales,  Charlotte M. Vogel,  Nicole E. Martinez, 
  • First Published: 28 March 2022
Core Ideas

  • Field mustard seedlings were exposed to the synthetic hormone EE2.
  • 17-α Ethynylestradiol functioned as a biostimulant with the most pronounced effects observed at 1 μg L−1.
  • Most plant traits were similar or improved compared with controls up to 15 μg L−1.
  • Results inform management of crop growth in urban agricultural fields.

Open Access

Runoff, erosion, and nutrient transport arising from furrow irrigation in a corn conservation production system

G. Dave Spencer,  L. Jason Krutz,  Martin A. Locke,  Drew M. Gholson,  Corey J. Bryant,  W. Brien Henry,  Bobby R. Golden, 
  • First Published: 21 April 2022
Core Ideas

  • Cover crop had no effect on runoff but reduced erosion at least 16%.
  • Eliminating traffic in furrows decreased runoff and erosion by 11%.
  • N transport from simulated irrigation events was <0.2% of annual N inputs.
  • Traffic compaction is an overlooked hindrance to irrigation efficiency.

Open Access

Water quality adjacent to swine slurry holding ponds associated with a concentrated animal feeding operation

Andrew Sharpley,  James Burke,  Kristofor Brye,  Larry Berry,  Phillip Hays,  Mike Daniels,  Karl VanDevender,  Tim Glover,  Brian Haggard, 
  • First Published: 29 April 2022
Core Ideas

  • Chloride was used as a conservative tracer of subsurface flows from swine slurry holding ponds.
  • There was no evidence of leakage from holding ponds based on water chemistry below swine slurry holding ponds.
  • Nutrients from sources like ants show the need to consider all potential sources in field studies.

Statistics

Open Access

Spatial patterns in U.S. hard red winter wheat quality

Yikuan Chen,  B. Wade Brorsen, 
  • First Published: 12 April 2022
Core Ideas

  • Wheat buyers benefit from knowing which elevators have desired grain qualities.
  • Wheat quality characteristics had strong spatial correlation within a year and across years.
  • Geospatial maps show how wheat qualities vary across the wheat-producing region.

ALSO IN THIS ISSUE

Open Access

AGG Publisher's Report 2021

  • First Published: 22 April 2022
Open Access

Thanks to Reviewers, Agrosystems, Geosciences & Environment, 2021

  • First Published: 13 April 2022
Open Access

Recipients of 2021 AGE Editor's Citation for Excellence Named

  • First Published: 13 April 2022