California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Craig E. Kallsen

Photo of Craig E. Kallsen
Farm Advisor
Cooperative Extension Kern County
1031 South Mount Vernon Avenue
Bakersfield, CA 93307
(661) 868-6221 Create VCard


M.S. Agronomy/Crop Physiology, U.C./Davis. 1979


Citrus, subtropical horticulture and pistachios

Areas of Expertise (click to see all ANR academics with this expertise)


Peer Reviewed

  • Kallsen, C.E.; Parfitt, D.E. (2022). Leaflet boron concentration reduced with hybrid Pistacia vera rootstocks. HortScience. 57:1, 65-71.
  • P.S.F., Lichtemberg.; Douhan, G.W.; Kallsen, C.E.; Jaime, R.; Velasco, J.; Rodriguez, D.; Michailides, T.J. (2020). Alternaria and Colletotrichum diseases of citrus in the San Joaquin Valley. Citrograph. 11:2, 58-63.
  • Nouri, MT; Lawrence, DP; Kallsen, CE; Trouillas, FP (2020). Macrophomina crown and root rot of pistachio. Plants. 9:2, 134. Jan 21, 2020.
  • Kallsen, C.E.; Parfitt, D.E. and Maranto (2020). UC Pistachios show improved nut quality and are ready for harvest earlier than Kerman. California Agriculture. UC ANR. 74:2, 86-93.
  • Eskalen, A.; Douhan, G.W.; Kallsen, C.E.; Mayorquin, J.S. (2019). Colletotrichum dieback of mandarins and navel oranges. Citrograph. 10:2, 50-54.
  • Nouri, M.T.; Lawrence, D.P.; Holland, L.A.; Doll, D.A.; Kallsen, C.E.; Columbar, D.M.; Trouillas, F.P. (2019). Identification and phytopathology of fungal species associated with canker disease in California. Plant Disease. 103:9, 2397-2411.
  • Mayorquin, J.S.; Nouri, M.T.; Peacock, B.B.; Trouillas, F.P.; Douhan, G.; Kallsen, C.E.; Eskalen, A. (2019). Identification, pathogenicity and spore trapping of Colletotrichum karstii. Plant Disease. 103:7, 1464-1473.
  • Kallsen, C.E.; Parfitt, D.E. (2019). 'Tejon' male pistachio: an early blooming pollenizer for 'Gumbdrop'. Hortscience 53. 1719-1721.
  • Randall, J.J.; Stamler, R.A.; Kallsen, C.E.; Fichtner, E.J.; Heerema, R.J.; Cooke, P.; Francis, I. (2018). Comment on "Evolutionary transitions between beneficial and phytopathogenic Rhodococcus challenge disease management". eLife. 2018:7.
  • Al Rwahnih, M.; Adib, R.; Stevens, A.; Diaz-Lara, A.; Trouuillas, F.P.; Preece, J.E.; Kallsen, C.E.; Farrar, K.; Golino, D. (2018). Discovery of viruses and virus-like pathogens in pistachio using high-throughput sequencing. Plant Science. 102:7, 1419-1425.
  • Kallsen, C.E.; Parfitt, D.E. (2018). 'Famoso', a new male pistachio cultivar to replace 'Peters'. HortScience. 52, 1829-1833.
  • Kallsen, C.E.; Parfitt, D.E. (2018). Female pistachio tree named 'Gumdrop'. United States Plant Patent. PP28,953, P3. 2/13/2018.
  • Kallsen, C.E.; Parfitt, D.E.; Maranto, J. (2018). Male pistachio tree named 'Famoso'. United States Plant Patent. PP28,994, P3. 2/27/2018.
  • Kallsen, C.E.; Parfitt, D.E. (2018). Male pistachio tree named 'Tejon'. United States Plant Patent. PP28,931 P3. 2/6/2018.
  • Fichtner, E.J.; Dhaouadi, S.; Blomquist, C.L. (2017). First report of Phytophthora taxon walnut on Pistacia vera in California. Plant Disease. 101, 1059.
  • Kallsen, C.E.; Parfitt, D.E. (2017). Gumdrop, a new early harvest pistachio cultivar. Hortscience. 52, 310–312.
  • Kallsen, C.E. (2017). Temperature-related variables associated with yield of ‘Kerman’ pistachio in the San Joaquin Valley of California. HortScience. 52, 598-605.
  • Beede, R.H.; Brown, P.H.; Kallsen, C.E. and Weinbaum (2016). Diagnosing and correcting nutrient deficiencies. Chapter 16. Pgs. 173-188. The Pistachio Production Manual.L. Ferguson and D. Haviland. U.C. ANR Publication 3545. Oakland CA.
  • Fichtner, E.J.; Kallsen, C.E.; Blomquist, C.L. (2016). First report of crown rot caused by Phytophthora parsiana on pistachio in the southern San Joaquin Valley, California. Plant Disease. 100, 1795.
  • Parfitt, D.E.; Kallsen, C.E. (2016). Pistachio cultivars. Chapter 7. pgs 59-64. The Pistachio Production Manual.L. Ferguson and D. Haviland. Oakland CA, U.C. ANR Publication 3545.
  • Kallsen, C.E. (2016). Planning and designing the orchard. Chapter 5. Pgs. 39-46. The Pistachio Production Manual.L. Ferguson and D. Haviland. Oakland, CA, U.C. ANR Publication 3545.
  • Ferguson, L.; Kallsen, C.E. (2016). The pistachio tree: physiology and botany. Chapter 3, pgs. 19-26. The Pistachio Production Manual.L. Ferguson and D. Haviland. UC ANR Publication 3545.
  • Stamler, R.; Kilcrease, J; Kallsen, C.; Fichtner, E.; Cooke,P.; Heerema, R.; Randall, J. (2015). "First Report of Rhodococcus fascians Causing Pistachio Bushy Top Syndrome on UCB-1 Rootstock in California and Arizona." Plant Disease 99: 1468-1476.
  • Kallsen, C.; O'Connell, N.V. (2014). Pruning, pgs. 205-214. Citrus Production Manual.L. Ferguson and E. Grafton-Cardwell. Oakland, CA, University of California.: 432 pgs.
  • Kallsen, C.; Parfitt, D. (2011). "Comparison of scion/rootstock growth rates among U.S. Pistachio Cultivars." HortScience 46: 1-4.
  • Adesemoyi, A.; Eskalen, A.; Faber, B.; Bender, G.; O'Connell, N.; Kallsen, C.; Shea, T. (2011). Current knowledge on Fusarium dry rot of citrus. Citrograph. 2:7, 29-33.
  • Kallsen, C.; Sanden, B.; Arpaia, M. (2011). "Early navel orange fruit yield, quality, and maturity in response to late-season water stress." HortScience 46(1163-1169)
  • Grafton-Cardwell, E.; Morse, J.; O'Connell, N.; Phillips, P.; Kallsen, C.; Haviland, D. (2011). Pesticide Information, and Insects, Mites, and Snails. UC IPM Pest Management Guidelines: Citrus. UC ANR Publication. Publication 3441.
  • Adesemoyi, A.; Eskalen, A.; Mayorquin, C.; Roper, C.; Wang, P.; Vidalakis, G.; Kallsen, C.; O'Connell, N. (2011). Understanding ‘foamy bark rot’ of Fukumoto navel. Citrograph. 2:7, 26-28.
  • Parfitt, D.; Kallsen, C.; Holtz, B.; Maranto, J. (2010). "Randy’ Male Pistachio." HortTechnology 45(1113-1115)
  • Kallsen, C.; O'Connell, N. (2010). Scion/rootstock incompatibility as the cause of tree decline in Fukumoto navel in the San Joaquin Valley. Citrograph. 1:3, 20-24.
  • Kallsen, C.; Parfitt, D.; Maranto, J.; Holtz, B. (2009). "New pistachio varieties show promise for California Cultivation." California Agriculture 63: 18-23.
  • Parfitt, D.; Kallsen, C.; Holtz, B.; Maranto, J. (2008). "'Lost Hills’ A New Pistachio Cultivar for California." HortScience 43(247-249)
  • Parfitt, D.; Maranto, J.; Kallsen, C. (2007). ‘Lost Hills’ female pistachio. United States Plant Patent. US PP 17, 701. May, 8, 2007.
  • Parfitt, D.; Maranto, J.; Kallsen, C. (2007). ‘Randy’ male pistachio. United States Plant Patent. US PP 1, 262. December 4, 2007.
  • Kallsen, C.; Parfitt, D.; Holtz, B. (2007). "Early Differences in the Intensity of Alternate Bearing among Selected Pistachio Genotypes." HortScience 42(1740-1743)
  • Parfitt, D.; Maranto, J.; Kallsen, C. (2006). Female pistachio tree named 'Golden Hills'. United States Plant Patent. US PP 17, 158. Oct. 17, 2006.
  • Parfitt, D.; Kallsen, C.; Maranto, J.; Holtz, B. (2006). "'Golden Hills' Pistachio." HortScience 42(694-696)
  • Kallsen, C. (2005). "Production of Commercially Valuable Sized Fruit as a Function of Navel Orange Yield." HortTechnology 15(608-612)
  • Kallsen, C. (2005). "Topping and manual pruning effects on the production of commercially valuable fruit in a midseason navel orange variety." HortTechnology 15(335-341)
  • Grafton-Cardwell, E.; O'Connell, N.; Kallsen, C.; Morse, J. (2003). A Photographic guide to citrus fruit scarring. ANR Publication. No. 8090.
  • Chao, C.; Parfitt, D.; Ferguson, L.; Kallsen, C.; Maranto, J. (2003). "Genetic Analyses of Phenological Traits of Pistachio (Pistacia vera L.)." Euphytica 129(345-349)
  • Holtz, B.; Sibbett, S.; Kallsen, C.; Hendricks, L.; Beede, B.; Michailides, T.; Teviotdale, B.; Ferguson, L. (2002). "Evaluation of Pruning and Fungicide Sprays to Control Botryosphaeria Blight of Pistacia vera." Acta Horticulture 591: 569-574.
  • Kallsen, C. (2001). "Petroleum Oils as Navel Orange Fruit Thinning Agents." HortTechnology 11(189-193)
  • Kallsen, C.; Holtz, B.; Villaruz, L.; Wylie, C. (2000). "Leaf Zinc and Copper Concentrations of Mature Pistachio Trees in Response to Fertigation." HortTechnology 10(172-176)
  • Kallsen, C. (1999). "The Effect of Timing of the Final Seasonal Nitrogen Fertigation on Early Fruit Maturity, Fruit Diameter, and Leaf Nitrogen on Navel Oranges." HortTechnology 9(51-53)
  • Chao, C.; Parfitt, D.; Ferguson, L.; Kallsen, C.; Maranto, J. (1998). "Breeding and genetics of pistachio: the California program." Acta Horticulture 470: 152-161.
  • Smeal, D.; Kallsen, C.; Sammis, T. (1991). "Alfalfa Yield as Related to Transpiration, Growth State and Environment." Irrigation Science 12(79-86)
  • Lugg, D.; Tubaileh, A.; Kallsen, C.; Sammis, T. (1988). "Irrigation Effects on Rooting Patterns of Spring Barley." Irrigation Science 9(27-43)
  • Sammis, T.; Williams, S.; Smeal, D.; Kallsen, C. (1986). "Effect of Soil Moisture Stress on Leaf Area Index, Evapotranspiration, and Modeled Soil Evaporation and Transpiration." American Society of Agricultural Engineers Transactions 29(956-961)
  • McCree, K.; Kallsen, C.; Richardson, S. (1984). "Carbon Balance of Sorghum Plants During Osmotic Adjustment to Water Stress." Plant Physiology 76(898-902)
  • Kallsen, C.; Gregory, E.; Sammis, T. (1984). "Nitrogen and Yield as Related to Water Use of Spring Barley." Agronomy Journal 76(59-64)
  • Abdul-Jabbar, A.; Sammis, T.; Lugg, D.; Kallsen, C.; Smeal, D. (1983). "Water Use by Alfalfa, Maize, and Barley and Influenced by Available Soil Water." Agricultural Water Management 6(351-363)
  • Sammis, T.; Gregory, E.; Kallsen, C. (1982). "Estimating Evapotranspiration with Water Production Functions of the Blaney-Criddle Method." American Society of Agricultural Engineers Transactions 25(1656-61)

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