Todd Einhorn

Todd Einhorn, Associate Professor, Horticulture
Ph.D., Pomology, Colorado State University, Fort Collins
Dissertation:  “Water relations of apple trees (Malus x domestica Borkh., cv. Gala)  under partial rootzone drying irrigation”
B.S., Horticulture Science, Colorado State University, Fort Collins

Phone: 541.386.2030
Send e-mail to Todd Einhorn


I am presently developing an applied research program in the area of tree fruit physiology, with priority given to sweet cherry and pear horticulture, and minor emphases placed on postharvest relations.  Major thematic areas are:  1) Increased production efficiency, 2) Yield security, 3) Fruit growth and development, and 4) Improvement of fruit quality.  These themes are closely linked to the environmental and economic sustainability of the tree fruit industry.



Pasa, M., and Einhorn, T. 2014. Heading cuts and prohexadione-calcium affect the growth and development of ‘d’Anjou’ pear shoots in a high-density orchard. Scientia Horticulturae 168: 267-271. 

Bell, R., van der Zwet, T., Castagnoli, S., Einhorn, T., Turner, J., Spotts, R., Moulton, G.A., Reighard, G.L. and Shane, W.W. 2014. ‘Gem’ Pear. HortScience 49 (3): 361-363.

Einhorn, T., Pasa, M., and Turner, J.  2014. ‘D’Anjou’ pear shoot growth and return bloom, but not fruit size, are reduced by prohexadione-ca. HortScience 49(2): 180-187.

Li, P., Zhang, Y., Einhorn, T., and Cheng, L. 2014. Comparison of phenolic metabolism and primary metabolism between green ‘Anjou’ pear and its bud mutation, red ‘Anjou’.  Physiologia Plantarum 150: 339-354.

Castagnoli, S., Long, L., Shearer, P., Pscheidt, J., Olsen, J., Peachey, E., and Einhorn, T. 2014. Pest Management Guide for Tree Fruits in the Mid-Columbia Area. EM 8203. Corvallis, OR: Oregon State University Extension Service. 


Einhorn, T. Y. Wang and J. Turner. 2013.  Sweet cherry fruit firmness and postharvest quality of late-maturing cultivars are optimized with low rate, single applications of Gibberellic Acid (GA3). HortScience 48 (8):  1010-1017.

Einhorn, T., Castagnoli, S., Smith, T., Turner, J. and Meilke, E.  2013. Summary of the 2002 Pacific Northwest Pear Rootstock Trials:  Performance of ‘d’Anjou’ and ‘Golden Russet Bosc’ Pear on Eight Pyrus Rootstocks. Journal of the American Pomological Society 67 (2):  80-88.

Einhorn, T., Pasa, M., and Turner, J. 2013. Promotion and management of pear fruiting. Good Fruit Grower 64 (6): 42-43.

Einhorn, T., Pasa, M., and Musacchi, S. 2013. Vigor control and promotion of fruiting of pear trees. Good Fruit Grower 64 (4):  35-37.


Einhorn, T., Turner, J., and Laraway D.  2012.  Effect of reflective fabric on yield of mature ‘d’Anjou’ pear trees.  HortScience.  47 (11): 1580-85.

Einhorn, T., Castagnoli, S., Turner, J. and Bell, R. 2012. A gem of a pear. Good Fruit Grower 63 (14): 25-26.

Einhorn, TC, Caspari, HW, and Green S. 2012.  Total soil water content accounts for augmented ABA leaf concentration and stomatal regulation of split-rooted apple trees during heterogeneous soil drying. Journal of Experimental Botany  63 (14): 5365-5376.

Einhorn, T. 2012. Irrigating cherry orchards efficiently. Good Fruit Grower 63 (7):  32-35.

Elikins, R., R. Bell, and T. Einhorn. 2012. Needs assessment for future US pear rootstock research directions based on the current state of pear production and rootstock research. Journal of the American Pomological Society 66 (3):  153-163.

Sugar, D. and T.C. Einhorn.  2012. Induction of pear ripening capacity as influenced by harvest maturity, conditioning temperature, and ethylene treatment. Acta Horticulturae 945: 303-308.


Einhorn, T., D. Laraway and J. Turner. 2011. Cropload management does not consistently improve crop value of ‘Sweetheart’/’Mazzard’ sweet cherry trees. HortTechnology 21 (5): 546-553.

Einhorn, T., Turner, J., and Postman, J. 2011. Quince evaluated for hardiness. Good Fruit Grower 62 (14): 19.

Sugar, D. and Einhorn T.  2011. Harvest maturity and conditioning temperature influences induction of ripening capacity in ‘d’Anjou’ pear fruit.  Postharvest Biology and Technology 60: 121-124.

Einhorn, T., Turner J., and Laraway, D.  2011. Reflective fabric improves intra-canopy light levels and increases yield in a low-density, mature ‘d’Anjou’ pear orchard. Acta Horticulturae 909:  565-570. 

Einhorn, T., Postman, J., and Turner J.  2011. Characterization of cold hardiness in quince:  Potential pear rootstock candidates for Northern pear production regions. Acta Horticulturae 909: 137-144. 

Sugar, D. and Einhorn T.  2011.  Harvest maturity, conditioning temperature, and ethylene treatment influence induction of ripening capacity in ‘d’Anjou’ pear fruit. Acta Horticulturae 909: 719-724. 

Castagnoli, S., Turner, J., Einhorn T., and Bell R.  2011.  Performance of US 71655-014, a fire blight resistant pear selection from the USA. Acta Horticulturae 909: 177-182. 

Lang, G.A, Robinson, T., Einhorn, T., Embree, C., Grant, J., Ingels, C., Neilsen, D., Neilsen, G., Pokharel, R., Hirst, P., Kushad, M., Parra-Quezada, R. 2011. Establishment of 12 regional pedestrian cherry orchard systems trials- 2010 progress report. Compact Fruit Tree 44 (3):  5-6.


Crisosto, C., Bremer, V., Ferguson, L., Norton, M. and Einhorn, T. 2010. Preharvest ethephon eliminates first crop figs. HortTechnology (20) 1: 173-178.

Einhorn, T., Turner, J., and Laraway, D. 2010.  Reflective fabric increases yield in low density ‘d’Anjou’ pears. Good Fruit Grower 61 (14): 13-15.


Einhorn, T., Caspari, HW, and Green S.  2009.  Estimation of containerized single stem and split-rooted, non-fruiting apple tree water use using miniaturized heat pulse probes.  Acta Horticulturae 846: 285-292.

Share this