California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Craig E. Kallsen

Photo of Craig E Kallsen
Farm Advisor Emeritus (Retired)
Cooperative Extension Kern County
1031 South Mount Vernon Avenue
Bakersfield, CA 93307 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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