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AgSensing

Remote Sensing and Data Analytics for Sustainable Agriculture

AgSensing
https://agsensing.osu.edu

Scholarly Presenations

Note: *Identifies graduate students/staff supervised by Dr. Sami Khanal as ‘major advisor’.

 

2025

  • *S. Dhakal, A. Shah, K. Cornish, S. Khanal. 2025. Assessing U.S. Production Potential of Alternative Natural Rubber Crops: Guayule and Rubber Dandelion. NSF TARDISS Annual Retreat, November 19, Wooster, OH. [Poster]
  • *Waltz, L., Sridhar, S., Waltz, R., Rodriguez, P., Hong, C., *Ghoorkhanian, A., et al. including Khanal, S. 2025. An Orchestration Engine for Scalable, On-Demand AI Phenotyping from UAS Imagery in Agriculture. In Proceedings of the 33rd ACM International Conference on Advances in Geographic Information Systems. SIGSPATIAL ’25: The 33rd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, November 3-6, 2025, Minneapolis, MN. [Oral]
  • Donnell, K.B., Tang, W.T., Kudva, A., Bevers, N., Timilsina, A., Khanal, S. 2025. Composite Trust Region Bayesian Optimization for High-Dimensional Agroecosystem Model Calibration and Local Sensitivity Analysis. AIChE Annual Meeting, November 2-6, 2025, Boston, MA. [Oral] 
  • *Dhakal, S., Shah, A., and Khanal, S. 2025. Monitoring historical waste coal piles using image classification and change detection algorithms on satellite images. ASABE Annual International Meeting, July 13-16, Toronto, Canada. [Oral, Virtual]
  • *Dhakal, S., Cornish, K., Shah, A., and Khanal, S. 2025. Assessment of Potential Guayule Availability for Natural Rubber Production in the Continental US. The CFAES Annual Research Conference, April 10, Columbus, OH. [Poster]
  • *Bevers, N., Timilsina, A., Manandhar, A., Witter, J., Wu, K., Shah, A., and Khanal S. 2025. A Soil Mesocosm Experiment for Comparing Greenhouse Gas Emissions Resulting from the Application of Hydrochar Soil Amendments for Growing Corn. The CFAES Annual Research Conference, April 10, Columbus, OH. [Poster]
  • *Ansari, A., Timilsina, A. P., Shah, A., Manandhar, A., and Khanal, S. 2025. Assessing switchgrass efficacy in reclaiming abandoned mine lands using SWAT model. The CFAES Research Forum Poster Competition, April 10, Columbus, OH. [Poster]
  • *Dhakal, S., Ohlson, E. W., Wilson, J., and Khanal, S. 2025. Detection of High Plains Wheat Mosaic Virus (HPWMoV) in sweet corn using multispectral imagery and deep learning. Edward F. Hayes Advanced Research Forum, The Ohio State University, Columbus, OH. [Poster]

2024

  • Van Roekel, J., Khanal, S., Karhoff, S., Lindsey, L. E., Haden, R., Timilsina, A. P., Bevers, N., Shahrokhi, M., & Ortez, O. 2024. Impact of Cereal Rye Cover Crops on Yield and Environmental Outcomes: A Field-Scale Approach [Abstract]. ASA, CSSA, SSSA International Annual Meeting, San Antonio, TX. [Oral]
  • Waltz, L., Katari, S., Dill, T., Porter, C., Ortez, O., Lindsey, L., Nandi, A., and Khanal, S. 2024. A Growth Stage Centric Approach to Field Scale Yield Estimation for Corn Leveraging Machine Learning Methods From Multimodal Data. 16th International Conference on Precision Agriculture.

2023

  • Van Roekel, J., Karhoff, S., Lindsey, L. E., Haden, R., Khanal, S., Ortez, O., and #Timilsina, A. P. 2023. Overcoming the Cover Crop Yield Gap and Barriers to Cover Crop Adoption in Ohio’s Maumee River Watershed. ASA, CSSA, SSSA International Annual Meeting, St. Louis, MO. [Poster]
  • Novais, W., Sprunger, C., Lindsey, L. E., Khanal, S., Ortez, O., Mann, M., and Lindsey, A. J. 2023. The Use of Spectral Reflectance to Detect Stress in Corn from Excess Water. ASA, CSSA, SSSA International Annual Meeting, St. Louis, MO.  [Oral]
  • Novais, W., Sprunger, C., Lindsey, L. E., Khanal, S., Ortez, O., Lindsey, A. J., and Mann, M. 2023.  Winterkill and Overwinter Cover Crops Used for Flooded Areas on Subsequent Corn Crop Performance. ASA, CSSA, SSSA International Annual Meeting, St. Louis, MO.  [Oral]
  • Khanal, S., *Timilsina, A., and *Hazrana, J. 2023. Understanding of agronomic, environmental, and economic tradeoffs of cover crops in Maumee River Watershed. Northeast Agricultural and Biological Engineering Conference (NABEC), July 30-August 2, Toronto, Canada. [Oral]
  • *KC, K., and Khanal, S. 2023. Multiscale integration of satellite and UAV images to improve cereal rye biomass estimation. American Society of Agricultural and Biological Engineers (ASABE) Annual International Meeting, July 9-12, Omaha, Nebraska. [Oral]
  • *KC, K., *Waltz, L., *Bevers, N., *Katari, S., Bolin, M., Romanko, M., and Khanal, S. 2023. Estimating canopy height of cereal rye cover crop using multispectral images from unmanned aerial vehicle. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Poster]
  • #Timilsina, A.P., Khanal, S., and *Bhattarai, A. 2023. Climate change impact on agroecosystem services of conservation practices under CMIP6 climate projections in corn-soybean system in Maumee River Watershed, USA. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Oral]
  • *Katari, S., and Khanal, S. 2023. Unmanned aerial vehicle for assessing within-field variability in corn spacing. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Poster]
  • *Katari, S., Lindsey, L., and Khanal, S. 2023. Assessing soybean crop phenology using time series of satellite images. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Oral]
  • *Bevers, N., Ohlson, E., *KC, K., Jones, M., and Khanal, S. 2023. Sugarcane mosaic virus (SCMV) detection in maize using UAV multispectral imagery and evaluation of maize production for four susceptible hybrid varieties. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Poster]
  • *Bevers, N., Peart, A., *KC, K., Lopez-Nicora, H., and Khanal, S. 2023. Detection of soybean cyst nematode (SCN) using UAV multispectral imagery and machine learning. ASABE Annual International Meeting, July 9-12, Omaha, Nebraska. [Oral]
  • *Katari, S., and Khanal, S. 2023. An automated framework for counting corn plants using UAV images. CFAES Annual Research Conference, March 27-30, Columbus, Ohio. [Poster]
  • *Joshi, N., #Park, J., Zhao, K., Londo, A., and Khanal, S. 2023. Monitoring the proxies of harmful algal blooms using Sentinel-3: A case study of Western Lake Erie Basin. CFAES Annual Research Conference, March 28, Columbus, Ohio. [Poster]
  • *Dhakal, S., Khanal, S., Manandhar, A., and Shah, A. 2023. Monitoring surface coal mine areas using remote sensing. CFAES Annual Research Conference, March 27-28, Columbus, Ohio. [Poster]
  •  Khanal, S. 2023. Simulated effects of management practices on greenhouse gas emissions and soil organic carbon in the Maumee River Watershed. NC 1195 Multistate Annual Meeting, March 7-8, Kansas. [Oral]

2022

  • #Park, J., Zhao, K., Khanal, S., *Neha, J., and Londo, A. 2022. The use of harmonized Landsat Sentinel-2 datasets toward estimating spatio-temporal behavior of Chlorophyll-a over inland lakes in Ohio. American Geophysical Union, December 12-17, Chicago, Illinois. [Poster]
  • Wanderson, N., Sprunger, C., Lindsey, L.E., Khanal, S., Ortez, O., Mann, M., and Lindsey, A. 2022. Elucidating how N management practices and excess water conditions affect corn N uptake and grain yield. ASA-CSSA-SSSA International Annual Meeting, November 6-9, Baltimore, Maryland. [Oral]
  • Wanderson, N., Sprunger, C., Lindsey, L.E., Khanal, S., Ortez, O., Mann, M., and Lindsey, A. 2022. Assessing various N sources and water excess on corn growth and grain yield. ASA-CSSA-SSSA International Annual Meeting, November 6-9, Baltimore, Maryland. [Oral]
  • *KC, K., Khanal, S., Culman, S., Strasbaugh, C., Romanko, M., Fisher, B., and Moneymaker, B. 2022. Using drone imagery to assess spatial variability in nutrient uptake efficiency of cover crops. NABEC, July 31-August 3, Edgewood, Maryland.  [Poster]
  • *KC, K., Khanal, S., Culman, S., Strasbaugh, C., Romanko, M., Fisher, B., and Moneymaker, B. 2022. Mapping and estimating biomass of cover crops using drone and satellite-based imagery. NABEC, July 31-August 3, Edgewood, Maryland.  [Oral]
  • *Joshi, N., #Park, J., Zhao, K., Khanal, S., and Londo, A. 2022. Exploring the capabilities of remote sensing to monitor cyanobacterial harmful algal bloom in Western Lake Erie. NABEC, July 31-August 3, Edgewood, Maryland.   [Poster]
  • *Bhattarai, A. and Khanal, S. 2022. Modeling the effects of climate change and conservation practices on agroecosystem services at a landscape scale. NABEC, July 31-August 3, Edgewood, Maryland. [Oral]
  • *Zhang, Z., Khanal, S., Raudenbush, A., Tilmon, K., and Stewart, C. 2022. Assessing the efficacy of machine learning techniques to characterize soybean defoliation using unmanned aerial vehicles. ASABE Annual International Meeting, July 17-20, Houston, Texas. [Oral]
  • *KC, K., Khanal, S., Culman, S., Strasbaugh, C., Romanko, M., Fisher, B., and Moneymaker, B. 2022. Assessing the growth and nutrient uptake efficiency of cover crops using satellite and drone-based imagery. ASABE Annual International Meeting, July 17-20, Houston, Texas. [Oral]
  • *Bhattarai, A., and Khanal, S. 2022. Effect of climate change and conservation practices on agroecosystem services at a landscape scale. ASABE Annual International Meeting, July 17-20, Houston, Texas. [Oral]
  • *Joshi, N., #Park, J., Zhao, K., Khanal, S., and Londo, A. 2022. Assessing the potential of satellite remote sensing in monitoring cyanobacterial harmful algal bloom in Western Lake Erie. ASABE Annual International Meeting, July 17-20, Houston, Texas. [Oral]
  • #Neupane, J., *Joshi, N., Fulton, J., and Khanal, S. 2022. Assessing the effect of variable seeding rates on corn and soybean production systems using machine learning and geospatial analyses. ASABE Annual International Meeting, July 17-20. [Oral]
  • *KC, K., Khanal, S., Culman, S., Strasbaugh, C., Romanko, M., Fisher, B., and Moneymaker, B. 2022. Application of drone-based imagery for monitoring cover crop biomass and their nutrient uptake efficiency. CFAES Annual Research Conference, April 11-14. [Poster]
  •  Khanal, S. 2022. Multiscale remote sensing technologies for monitoring cover crops and their ecosystem services. NC 1195 Multistate Annual Meeting, March 2-3, Virtual. [Oral]

2021

  • Khanal, S., Romanko, M., *KC, K., Fisher, J., Moneymaker, B., and Strasbaugh, C. 2021. Multiscale remote sensing technologies for monitoring cover crops and their impact on ecosystem services. EEGS/WG-PSS/SEG Symposium, Application of Proximal and Remote Sensing Technologies for Soil Investigations, August 16-19, Virtual. [Oral]
  • *KC, K., and Khanal, S. 2021. Long term effect of cover cropping on crop productivity and water quality at a landscape scale. NABEC, July 26-28, Virtual. [Oral]
  • *Bhattarai, A., and Khanal, S. 2021. Modeling the effects of management practices and environmental variables on ecosystem services from corn-dominated agricultural systems. NABEC, July 26-28, Virtual. [Poster] (Third place in poster competition)
  • *KC, K., and Khanal, S. 2021. Satellite and drone-based assessment of cover crop biomass and nutrient uptake efficiency. NABEC, July 26-28, Virtual. [Poster]
  • *KC, K., and Khanal, S. 2021. Assessment of the spatial and temporal patterns of cover cropping practices in the Western Lake Erie Basin. ASABE Annual International Meeting, July 12-16, Virtual. [Oral] (First place, Boyd-Scott research competition, MS Category)
  • Manandhar, A., Khanal, S., and Shah, A. 2021. Techno-economic analysis of implementing UAV technologies for crop health monitoring. ASABE Annual International Meeting, July 12-16, Virtual. [Oral]
  • *KC, K., and Khanal, S. 2021. Crop yield and water quality effects of cover cropping in the Western Lake Erie Basin. ASABE Annual International Meeting, July 12-16, Virtual. [Oral]
  • *Bhattarai, A., and Khanal, S. 2021. Simulating the effects of management and environmental factors on ecosystem services from corn and soybean dominated agricultural production systems. ASABE Annual International Meeting, July 12-16, Virtual. [Poster]
  • Manandhar, A., Khanal, S., and Shah, A. 2021. Techno-economic analysis of implementing unmanned aerial systems for corn crop health monitoring. CFAES Annual Research Conference, OSU, April 5-7, Virtual. [Poster] (Third place, Postdoc category)
  • *KC, K., and Khanal, S. 2021. Quantifying yield and water quality benefits of cover cropping at a landscape scale using satellite imagery. CFAES Annual Research Conference, OSU, April 5-7, Virtual. [Poster] (Third place, MS category)
  • *Bhattarai, A., and Khanal, S. 2021. How do environmental and management factors affect ecosystem services from corn-soybean-based agricultural systems? CFAES Annual Research Conference, OSU, April 5-7, Virtual. [Poster]
  • Khanal, S. 2021. Multiscale assessment of ecosystem services of agricultural practices. NC 1195 Multistate Annual Meeting, March 2-3, Virtual. [Oral]

2020

  • Lee, K., Khanal, S., and Bakshi, B. 2020. Climate-resilient process design using the flexibility analysis approach. American Institute of Chemical Engineers (AIChE) Annual Meeting, November 16-20, Virtual. [Oral]
  • *Steinbeck, G., Khanal, S., Kalcic, M., and King, K. 2020. Modeling the effects of agricultural conservation practices on greenhouse gas emissions and crop yield for corn-soybean systems. NABEC, July 28-29, Virtual. [Poster]
  • *KC, K., and Khanal, S. 2020. Assessing the spatial and temporal distribution of cover cropping practices in the Western Lake Erie Basin using remote sensing. NABEC, July 28-29, Virtual. [Poster]
  • *KC, K., and Khanal, S. 2020. Assessment of the spatial and temporal pattens of cover crops in the Western Lake Erie Basin. ASABE Annual International Meeting, July 13-15, Virtual. [Oral]
  • *Steinbeck, G., Khanal, S., Kalcic, M., and King, K. 2020. Modeling greenhouse gas emissions from corn-soybean systems under best management practices. ASABE Annual International Meeting, July 15, Omaha, Nebraska. [Oral]
  • *Steinbeck, G., Khanal, S., Kalcic, M., and King, K. 2020. Development and implementation of a framework for the calibration of the DNDC model using an inverse modeling approach to quantify nutrient leaching and greenhouse gas emissions from agricultural system. ASABE Annual International Meeting, July 15, Omaha, Nebraska. (First place, Boyd-Scott research competition, MS Category) [Oral]
  • *Venkatesh, S., *Zhang, Z., Boubin, J., Khanal, S., and Stewart, C. 2020. Corn counting using Unmanned Aircraft Systems and Convolutional Neural Networks. CFAES Annual Research Conference, OSU, April 24, Virtual. [Poster]
  • *Steinbeck, G., Khanal, S., Kalcic, M., and King, K. 2020. Modeling the effects of management practices on soil greenhouse gas emissions and nutrient content for a corn-soybean system. CFAES Annual Research Conference, OSU, April 24, Virtual. [Poster]
  • *KC, K. and Khanal, S. 2020. Cover crop mapping in Maumee River watershed. CFAES Annual Research Conference, OSU, April 24, Virtual. [Poster] (Second place, Master’s category).

2019

  • Khanal, S. and *Steinbeck, G. 2019. Inverse modeling for calibration and uncertainty analysis of the DNDC model. American Geophysical Union (AGU), December 11, San Francisco, California. [Oral]
  • Lee, K., Khanal, S., and Bakshi, B. 2019. Designing climate-resilient chemical processes and supply chains. AIChE Annual Meeting, November 14, Orlando, Florida. [Oral]
  • Lee, K., Khanal, S., and Bakshi, B. 2019. Managing technological and ecological systems in a watershed while considering the few nexus, ecological carrying capacity, and the effects of climate change. AIChE Annual Meeting, November 12, Orlando, Florida. [Oral]
  • Lee, K., Khanal, S., and Bakshi, B. 2019. Food-Energy-Water-CO2 nexus of technological and agroecological alternatives for sustainable watershed management. International Conference on Industrial Ecology, July 7-11, Beijing, China. [Oral]
  • Khanal, A., *Steinbeck, G., Khanal, S., and Shah, A. 2019. Life cycle assessment of corn stover collection for biobased industries in Ohio integrating crop modeling. ASABE Annual International Meeting, July 7-10, Boston, Massachusetts. [Poster]
  • Lee, K., Khanal, S., and Bakshi, B. 2018. The energy-water nexus of thermoelectric power generation and its impacts in the Muskingum River Watershed in Ohio. AIChE Annual Meeting, October 30, Pittsburg, Pennsylvania. [Oral]