James Schupp, Ph.D.

'Bell' Pear
Hortscience: A Publication of the American Society for Hortcultural Science, Bell, Richard L., Schupp, James R., Dardick, Chris, Demuth, Mark, Gottschalk, Christopher, 2023

Green fruit segmentation and orientation estimation for robotic green fruit thinning of apples
Computers and Electronics in Agriculture, Hussain, Magni, He, Long, Schupp, James Rawlinson, Lyons, David, Heinemann, Paul, 2023

Mask R-CNN based apple flower detection and king flower identification for precision pollination
Smart Agricultural Technology, Mu, Xinyang, He, Long, Heinemann, Paul, Schupp, James, Karkee, Manoj, 2022

Establishment performance of the 2017 NC-140 vigor-limiting peach rootstock trial across ten sites in North America
Acta Horticulturae, Minas, I. S., Reighard, G. L., Black, B., Cline, J. A., Chavez, D. J., Coneva, E., Lang, G. A., Parker, M., Robinson, T. L., Schupp, J., Francescato, P., Lordan, J., Beckman, T., Shane, W. W., Pieper, J. R., Sterle, D. G., Bakker, C., Clark, B., Ouellette, D., Swain, A., Winzeler, H. E., 2022

Cold Injury to Apple Flower Buds: How and When to Assess the Severity
Fruit Times, Schupp, James, 2022

Using Logistic Regression to Predict the Probability That Individual ‘Honeycrisp’ Apples Will Develop Bitter Pit
Hortscience: A Publication of the American Society for Hortcultural Science, Marini, Richard P., Lavely, Emily, Baugher, Tara Auxt, Crassweller, Robert, Schupp, James R., 2022

Targeted blossom/ green fruit thinning with variable rate sprayer
Pennsylvania Fruit News, He, L, Schupp, James, Choi, D, Heinemann, Paul, 2022

Effect of Mechanical Dormant and Summer Hedging on Growth, Fruit Quality and Return Bloom of Apple Trees in High-Density Plantings
Pennsylvania Fruit News, Schupp, James, Schupp, Melanie, 2022

Effect of Rootstock on Performance of Cresthaven Peach Trees.
Pennsylvania Fruit News 102:24-25, Schupp, James, Schupp, Melanie, 2022

An Apple Tree Branch Pruning Analysis
HortTechnology, Zahid, Azlan, Mahmud, Md S, He, Long, Schupp, James, Choi, Daeun, Heinemann, Paul, 2022

Green Fruit Removal Dynamics for Development of Robotic Green Fruit Thinning End-Effector
Journal of the ASABE, Hussain, Magni, He, Long, Schupp, James, Heinemann, Paul, Heinemann, Paul, Schupp, James, 2022

Blossom Thinning Pennsylvania Apples Using the Pollen Tube Growth Model
Pennsylvania Fruit News, Schupp, J, Schupp, M., 2022

Use of Extenday Reflective Groundcover on Mid-Atlantic Apple Cultivars: Impact on Red Blush and Canopy Light Distribution
Pennsylvania Fruit News, Farcuh, M, Schupp, James, Weber, Daniel, 2022

Technological advancements towards developing a robotic pruner for apple trees: A review
Computers and Electronics in Agriculture, Zahid, Azlan, Mahmud, Md Sultan, He, Long, Heinemann, Paul, Choi, Daeun, Schupp, James, 2021

Amid-Thin W® is now labelled for thinning apples at full bloom., Schupp, James, 2021

Investigation of branch accessibility with a robotic pruner for pruning apple trees
Transactions of the ASABE, Zahid, Azlan, He, Long, Choi, Daeun, Schupp, James, Heinemann, Paul, 2021

Branch and fruit accessibility for mechanical operations with various tree canopies (Final report), He, L, Schupp, James, Choi, D, Weber, D, 2021

Development of a High-Density, Highly Mechanized, Pedestrian Peach System, Schupp, James, Lara, Catherine, Schupp, Melanie, Miller, K, 2021

Effect of a Pneumatic Defoliator on Apple Fruit Color Development, Schupp, James, Schupp, Melanie, Lara, Catherine, 2021

In-field apple size and location tracking using machine vision to assist fruit thinning and harvest decision-making, Mirbod, Omeed, Choi, Daeun, He, L, Heinemann, Paul, He, Long, Heinemann, P, Marini, R, Schupp, James, 2021

Technological Advancements Towards Developing a Robotic Pruner for Apple Trees: A Review. Computers and Electronics in Agriculture COMPAG-D-21-00252R1, Zahid, Azlan, Mahmud, Md Sultan, He, L, Heinemann, P, Choi, D, Schupp, James, 2021

Verification and modification of a model to predict bitter pit for 'Honeycrisp' apples
Hortscience: A Publication of the American Society for Hortcultural Science, Marini, Richard P., Baugher, Tara Auxt, Muehlbauer, Megan, Sherif, Sherif, Crassweller, Robert, Schupp, James R., 2020

Development of an integrated 3R end-effector with a cartesian manipulator for pruning apple trees
Computers and Electronics in Agriculture, Zahid, Azlan, Mahmud, Md, He, Long, Choi, Daeun, Schupp, James, Heinemann, Paul, Heinemann, Paul, Schupp, James, 2020

Screening thermal shock as an apple blossom thinning method. I. stigmatic receptivity, pollen tube growth, and leaf injury in response to temperature and timing of thermal shock
Hortscience: A Publication of the American Society for Hortcultural Science, Kon, Thomas M., Schupp, Melanie A., Winzeler, Hans E., Schupp, James R., 2020

Screening thermal shock as an apple blossom thinning method. II. pollen tube growth and spur leaf injury in response to temperature and duration of thermal shock
Hortscience: A Publication of the American Society for Hortcultural Science, Kon, Thomas M., Schupp, Melanie A., Winzeler, Hans E., Schupp, James R., 2020

Development of a robotic end-effector for apple tree pruning
Transactions of the ASABE, Zahid, Azlan, He, L., Zeng, Lihua, Choi, D., Schupp, J., Heinemann, P., 2020

Thermal properties of ‘Gala’ apples during growing season for predicting harvest time
Transactions of the ASABE, Caliskan-Aydogan, Oznur, Puri, V, Yi, H., Schupp, J. R., Yi, Hojae, Schupp, J, Heinemann, P. H., Choi, Daeun, Heinemann, P, Puri, V. M., 2020

A sensor-based irrigation test system for apple orchards (Final report)
PA Fruit News 100(1):24-26, He, L., Choi, D., Schupp, J, Baugher, T., 2020

Branch and fruit acessibility for mechanical operations with various tree canopies (Year 1 report)
PA Fruit News 100(1):22-24, He, L., Schupp, J, Choi, D., Weber, D., 2020

Development of a High Density, Highly Mechanized, Pedestrian Peach System.
PA Fruit News 100(1):43-44, Schupp, J>, Winzeler, H., Schupp, M., 2020

Effect of Rootstock and In-row Tree Spacing on Performance of Coralstar Peach Trees.
PA Fruit News 100(1):49-50, Schupp, J., Winzeler, H., Schupp, M., 2020

Evaluation of effective canopy depths of apple trees for optimal machine sensing performance - Year 2/2
PA Fruit News 100(1):39-41, Choi, D., Schupp, J, Baugher, T, He, L., 2020

High density pear tours.
PA Fruit News 100 (2):28, Seifrit, D., Weber, D., Schupp, J., 2020

Improving orchard performance with terrain analysis using drone technology and Geographical Information Systems.
PA Fruit News 199(1):45-46, Schupp, J., He, L., Winzeler, H., Schupp, M., Clowney, M., 2020

Collision free path planning of a robotic manipulator for pruning apple trees, Zahid, Azlan, He, Long, Choi, Daeun Dana, Schupp, James, Heinemann, Paul, 2020

Sampling apple trees to accurately estimate mean fruit weight and fruit size distribution
Hortscience: A Publication of the American Society for Hortcultural Science, Marini, Richard P., Schupp, James R., Baugher, Tara Auxt, Crassweller, Robert, 2019

Stub length and stub angle did not influence renewal shoot number or branch angle of tall spindle ‘gala’/malling 9 apple trees
HortTechnology, Schupp, James R., Winzeler, H. Edwin, Schupp, Melanie A., 2019

Estimating apple fruit size distribution from early-season fruit diameter measurements
Hortscience: A Publication of the American Society for Hortcultural Science, Marini, Richard P., Schupp, James R., Baugher, Tara Auxt, Crassweller, Robert, 2019

A sensor-based irrigation test system for apple orchards
PA Fruit News 99 (1):43-45, He, Long, Choi, Dana, Schupp, James, Baugher, Tara, 2019

Development of a high density, highly mechanized pedestrian peach system
PA Fruit News 99 (1):24-25, Schupp, James, Winzeler, Hans, Schupp, Melanie, 2019

Evaluation of Effective canopy depths of apple trees for optimal machine sensing performance
PA Fruit News 99 (1):52-54, Choi, Dana, Schupp, James, Baugher, Tara, He, Long, 2019

Relationships between fruit weight and diameter at 60 days after bloom and at harvest for three apple cultivars
Hortscience: A Publication of the American Society for Hortcultural Science, Marini, Richard P., Schupp, James R., Baugher, Tara Auxt, Crassweller, Robert, 2019

Tree trunk position estimation for accurate fruit counts in apple yield mapping, Jarvinen, Thomas, Choi, Daeun, Heinemann, Paul, Schupp, James, Baugher, T, 2019

Research and Applications of Artificial Spur Extinction in Pennsylvania Orchards
PA Fruit News 99 (1):22-23, Wiepz, Rebecca, Schupp, James, Schupp, Melanie, Winzeler, Hans, 2019

Apple crop load management with special focus on early thinning strategies: A US perspective, Kon, Thomas M., Schupp, James R., 2018

Fruit Disorders - Harvest practices to prevent storage disorders in Honeycrisp
Fruit Times, Marini, R, Schupp, J, Crassweller, R, Baugher, T, Walsh, C, 2018

Comparison of chemical blossom thinners using ‘golden delicious’ and ‘gala’ pollen tube growth models as timing aids
Hortscience: A Publication of the American Society for Hortcultural Science, Kon, Thomas M., Schupp, James R., Yoder, Keith S., Combs, Leon D., Schupp, Melanie A., 2018

Effects of rootstock and tree spacing n Mineral Nutrition and Productivity of peach trees in Pennsylvania
Pennsylvania Fruit News, Schupp, J, Winzeler, E, Schupp, M, 2018

Rootstock performance in the 2009 NC-140 peach trial across 11 states
Acta Horticulturae, Reighard, G. L., Bridges, W., Archbold, D., Atucha, A., Autio, W., Beckman, T., Black, B., Chavez, D., Coneva, E., Day, K., Kushad, M., Johnson, R. S., Lindstrom, T., Lordan, J., Minas, I., Ouellette, D., Parker, M. L., Pokharel, R., Robinson, T. L., Schupp, J., Warmund, M., Wolfe, D., 2018

After top-working: Managing the new grafts
Penn State Fruit Times, Schupp, J, 2018

Gala apple scarf skin 2018 Grower Trials
Penn State Fruit Times, Schupp, J, Winzeler, E, Schupp, M, Baugher, T, Weber, D, Seifrit, D, 2018

Is it okay to concentrate chemical thinners?
Penn State Fruit Times, Schupp, J, 2018

Scarf skin and russet, two apple skin disorders: Description, causes, and management
Penn State Fruit Times, Schupp, J, 2018

Thinning after hail
Penn State Fruit Times, Schupp, J, Crassweller, R, Marini, R, Baugher, T, 2018

Sensing and automation in pruning of apple trees: A review
Agronomy, He, Long, Schupp, James, 2018

Prediction of bitter pit in ‘Honeycrisp’ apples and best management implications
Hortscience: A Publication of the American Society for Hortcultural Science, Baugher, Tara Auxt, Marini, Richard, Schupp, James R., Watkins, Christopher B., 2017

A method for quantifying whole-tree pruning severity in mature tall spindle apple plantings
Hortscience: A Publication of the American Society for Hortcultural Science, Schupp, James R., Winzeler, H. Edwin, Kon, Thomas M., Marini, Richard P., Baugher, Tara A., Kime, Lynn F., Schupp, Melanie A., 2017

The development of mechanical apple harvesting technology: A review
Transactions of the ASABE, Zhang, Zhao, Heinemann, Paul, Liu, Jude, Schupp, James, Baugher, Tara, 2016

Design and field test of a low-cost apple harvest-assist unit
Transactions of the ASABE, Zhang, Z., Heinemann, P. H., Liu, J., Schupp, J. R., Baugher, T. A., 2016

NC-140 peach rootstock testing in thirteen U.S. states, Reighard, G., Bridges, W., Archbold, D., Wolfe, D., Atucha, A., Pokharel, R., Autio, W., Beckman, T., Black, B., Lindstrom, T., Coneva, E., Day, K., Johnson, R. S., Kushad, M., Parker, M., Robinson, T., Schupp, J., Warmund, M., 2015

Development of a selective automated blossom thinning system for peaches
Transactions of the ASABE, Lyons, D. J., Heinemann, P. H., Schupp, J. R., Baugher, T. A., Liu, J., 2015

Mechanical blossom thinning of 'GoldRush' / M.9 apple trees with two string types and two timings
J. Amer. Pomological Soc., Schupp, J., Kon, T., 2014

2014-2015 Pennsylvania Tree Fruit Production Guide, Crassweller, R., Schupp, J., Krawczyk, G., Biddinger, D., Frazier, M., Peter, K., 2014

Crop load and fruit nutrient studies in commercial Honeycrisp orchards to determine best practices for minimizing bitter pit
Pennsylvania Fruit News, Baugher, Tara, Schupp, James, Baugher, Tara, Lara, C., Marini, Richard, Watkins, C., Basedow, Michael, Jarvinen, Tom, 2014

Impact of summer disease management on store rot of apple
Pennsylvania Fruit News, Peter, Kari, Halbrendt, Noemi, Schupp, James, 2014

Rootstock research update
Pennsylvania Fruit News, Crassweller, Robert, Smith, D, Schupp, James, Winzeler, Hans, Schupp, Melanie, 2014

Design, fabrication, and testing of a low-cost apple harvest-assist device, Zhang, Zhao, Heinemann, Paul, Liu, Jude, Schupp, James, Baugher, Tara, 2014

NC-140 Peach Rootstock Testing in 13 U.S. States
Acta Hort., Reighard, G., Bridges, W., Archbold, D., Atucha, A., Autio, W., Schupp, J., 2014

Labor efficient apple and peach systems for profitability
Pennsylvania Fruit News, Schupp, James, Kon, T, Winzeler, H, Schupp, M, Heinemann, P, Liu, J, Zhang, Z, Baugher, T, Lara, C, 2014

Thinning tall spindle apple based on estimations made with a hand-thinning gauge
HortTechnology, Kon, Thomas M., Schupp, James R., 2013

Handling frozen apples
Penn State Fruit Times, Schupp, J., 2013

Influence of mechanical string thinning treatments on vegetative and reproductive tissues, fruit set, yield, and fruit quality of 'Gala' apple
Hortscience: A Publication of the American Society for Hortcultural Science, Kon, Thomas M., Schupp, James R., Edwin Winzeler, H., Marini, Richard P., 2013

Innovations in peach thinning
Compact Tree Fruit, Baugher, T, Heinemann, P, Schupp, James, Lewis, K, 2013

Use of the Equillifruit Disc as a hand-thinning tool on tall spindle apple
Compact Fruit Tree, Kon, T, Schupp, J, Winzeler, H, 2013

Mechanization - improving efficiency on your farm
Proceeding Empire State Producers Expo, Schupp, J, 2013

Renewal pruning for high density apple plantings
Penn State Fruit Times, Schupp, J., 2013

Blossom Thinning results in an early bloom season
NJ Hort. Soc. News, Baugher, T, Schupp, James, Lara, C, Prozo, S, 2013

Comparing Honeycrisp strains
Pennsylvania Fruit News, Dubs, G, Winzeler, H, Schupp, M, Schupp, J, 2013

Cultivar and rootstock plantings report
Pennsylvania Fruit News, Crassweller, R, Schupp, J, Smith, D, 2013

Improvements to an apple decelerator and distributer for the apple bin of a vacuum harvest assist system
Pennsylvania Fruit News, Liu, J, Heinemann, P, Schupp, J, Baugher, T, 2013

Cropload management: the development of an efficient procedure for predicting apple fruit abscission following application of chemical thinners.
Pennsylvania Fruit News, Schupp, J, Winzeler, H, Kon, T, Schupp, M, 2013