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3,073 research outcomes, page 1 of 308
  • publication . Article . 2021
    Authors:
    Yan Zhu; Keith Cherkauer;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsA novel pixel-based calibration algorithm and an atmospheric correction method are developed.Application of the calibration methods reduces the RMSE of measurements to less than 1.32°C.The calibrations facilitate stitching of images together to form whole-fiel...

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  • publication . Article . 2021
    Authors:
    Xinjie Tong; Lingying Zhao; Roderick B. Manuzon; Matthew J Darr; Reyna M Knight; Chaoyuan Wang; Albert J Heber; Ji Qin Ni;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsAnnual average NH3 concentrations in two retrofitted manure-belt layer houses were 4.0 ±3.3 and 5.2 ±3.0 ppmv.Seasonal and diurnal variations were observed for NH3 concentrations (higher in colder seasons and early morning).Annual average NH3 emission rates fr...

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  • publication . Article . 2021
    Authors:
    Yuzhen Lu; Kitt G. Payn; Piyush Pandey; Juan J. Acosta; Austin J. Heine; Trevor D. Walker; Sierra N. Young;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsA hyperspectral imaging approach was developed for freeze-tolerance phenotyping of loblolly pine seedlings.Image acquisition was conducted before and periodically after artificial freezing of the seedlings.A hyperspectral data processing pipeline was developed...

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  • publication . Article . 2021
    Authors:
    Razieh Barzin; Hamid Kamangir; Ganesh C. Bora;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsLeaf nitrogen percentage in corn was estimated using various vegetation indices derived from UAVs.Eight machine learning methods were compared to find the most accurate model for nitrogen estimation.The most influential vegetation indices were determined for e...

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  • publication . Article . 2021
    Authors:
    Matthew W. Schramm; Mehari Z. Tekeste; Brian L. Steward;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsSimulation of uniaxial compression was performed with flexible fibers modeled in DEM.Bond-specific DEM parameters were found to be sensitive in uniaxial compression.A calibration technique that is not plunger-dependent is shown and validated.Abstract. To accur...

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  • publication . Article . 2021
    Authors:
    Yang Yukun; Wen Baoqin; Ding Longpeng; Li Liqiao; Chen Xinghua; Li Jingbin;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsSoil particle shapes were statistically analyzed, and four representative particles were obtained.A particle model was established using three-dimensional non-contact surface topography.This study used a response surface design method to calibrate significant ...

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  • publication . Article . 2021
    Authors:
    Thiago Berton Ferreira; Willingthon Pavan; José Maurício Cunha Fernandes; Senthold Asseng; Fabio Augusto Antunes de Oliveira; Carlos Amaral Ho¨lbig; Diego N. L. Pequeno; Genei Antonio Dalmago; Alexandre Lazaretti Zanatta; Gerrit Hoogenboom;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsCSM-NWheat, a DSSAT wheat crop model, was coupled with a pest module named PEST.The coupled model can simulate the impact of pest and disease damage on wheat crops.Pest damage is expressed in daily steps by communication links called coupling points.Coupling p...

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  • publication . Article . 2021
    Authors:
    Saad Almady; Mohamed Khelifi;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsA prototype pneumatic machine used to control the Colorado potato beetle (CPB) had no effect on potato plant growth.Yields in pneumatic treatment plots were comparable to those of control plots treated with a biological insecticide.Pneumatic control of the CPB...

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  • publication . Article . 2021
    Authors:
    Andrii Yatskul; Jean-Pierre Lemiere; Frédéric Cointault;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsModeling provides the relationships between path, kinematics, geometry, and towed implements.Linear interpolation allows trajectories to be compared if data recording is random.Correction coefficients can be a solution to compensate for soil resistance.Abstrac...

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  • publication . Article . 2021
    Authors:
    Uchit Nair; Peter P. Ling; Heping Zhu;
    Persistent Identifiers
    Publisher: American Society of Agricultural and Biological Engineers (ASABE)

    HighlightsAn algorithm was developed to process laser sensor data to make more accurate measurements of canopy dimensions.The algorithm isolated individual canopies, removed distortion, and estimated the occluded portions of the dataset.The algorithm reduced measured er...

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3,073 research outcomes, page 1 of 308