Fruit and Nut Information - Walnut: (a listing of useful links and pdf files on this website)
California Walnuts webpage: http://www.walnutinfo.com/ (accessed on Feb. 2, 2012)
An excellent online compilation of walnut research from 1971 to present, conducted by the University of California Cooperative Extension can be found at: http://fruitsandnuts.ucdavis.edu/Research_Databases/
The following is a useful webpage that discusses walnut production, rootstock performance, and pest/pathogen issues: Walnuts (2011) http://cekings.ucdavis.edu/Agriculture/Grapes_Tree_Fruits_Nut_Crops/Crop_Information_334/Walnuts_906/
Wolfskill Experimental Orchard-Walnut http://ucanr.org/sites/wolfskill2/Research/Plant_Breeding_481/Walnut_153/
UC Integrated Pest Management website on walnut crops (retrieved February 28th, 2012): http://www.ipm.ucdavis.edu/PMG/selectnewpest.walnuts.html
2011. Walnuts. University of California Cooperative Extension Kings County. Cavanaugh, P. 2008a. Clonal walnut planting follow-up: Growers shed light on their experiences. Pages 8-12, 46 Pacific Nut Producers. http://cekings.ucdavis.edu/files/19345.pdf
Cavanaugh, P. 2008b. Walnut clone plantings: Containerized stocks need careful consideration. Pages 4, 22-25 Pacific Nut Producer. http://cekings.ucdavis.edu/files/19292.pdf
California Department of Food and Agriculture (2011). Walnut/Raisin/Prune Report State Summary- 2011 Crop Year (http://www.nass.usda.gov/Statistics_by_State/California/Publications/Fruits_and_Nuts/201210wrp.pdf )
Chandel, J.S., Gautam, D.R., Sharma, N.C. (2006) Chip budding: an excellent method of propagation of walnut (Juglans regia L.). Acta Horticulturae. 705:335-339
Connell, J. H., Olson, B., Limberg, J., & Metcalf, S. (2006). Evaluation of 'Chandler' walnut on its own roots and grafted to various rootstocks. University of California Cooperative Extension.
DeBuse, C., R. Buchner, B. Lampinen, G. McGranahan, C. Leslie, D. Ramos, S. Metcalf, W. Hackett, C. Gilles, and F. Spanfelner. 2010. 2010 Walnut clonal Paradox rootstock trials in northern California. University of California Cooperative Extension, Oakland. http://walnutresearch.ucdavis.edu/2010/2010_59.pdf
Grant, J. A. and G. H. McGranahan. 2005. English walnut rootstocks help avoid blackline disease, but produce less than 'Paradox' hybrid. California Agriculture:249-251. http://ucce.ucdavis.edu/files/datastore/391-51.pdf
Hackett, W., C. Leslie, J. Grant, B. Lampinen, G. McGranahan, K. Anderson, B. Beede, R. Buchner, J. Caprile, C. DeBuse, J. Hasey, N. Manterola, R. Robinson, D. Kluepfel, G. Browne, and M. McKenry. 2010. Clonal propagation of walnut rootstock genotypes for genetic improvement Retrieved July 20, 2011. UC Davis walnut research reports: http://walnutresearch.ucdavis.edu/2010/2010_65.pdf
Hartmann, H. T., & Beutel, J. A. (1979). Propagation of temperate-zone fruit plants. Oakland: University of California Division of Agriculture and Natural Resources, Publication 21103.
Hartmann, H. T., Kester, D. E., Davies, F. T., & Geneve, R. L. (2011). Hartmann and Kester's Plant Propagation: Principles and Practices, 8th ed. Upper Saddle River: Prentice Hall.
Hasey, J., W. Hackett, G. McGranahan, C. Leslie, M. McKenry, G. Browne, and D. Kleupfel. 2011. Walnut trees in the nursery trade: Understanding terminology, how they are propagated, availability, and clonal rootstock pest interactions. University of California Cooperative Extension, Oakland. http://ucce.ucdavis.edu/files/datastore/391-536.pdf
Leslie, C. A. and G. H. McGranahan. 1998. The Origin of Walnut. Pages 3-7 Walnut Production Manual. University of California Agriculture and Natural Resources Publication 3373, Oakland.
Payghamzadeh, K., Kazemitabar, S.K., (2011) In vitro propagation of walnut – A review. African J. of Biotech. 10:290-311.
Perez, A., K. Plattner, and E. Dohlman. 2010. Fruit and Tree Nuts Yearbook. Economic Research Service, USDA, Springfield.
Reil, W. O., C. A. Leslie, H. I. Forde, and J. R. McKenna. 1998. Propagation. Pages 71-83 Walnut production manual. University of California, Agriculture and Natural Resources, Oakland. Rovira, M., Aleta, N. (2010) Productive behavior of self-rooted and grafted plants in Persian walnut. Acta Horticulturae. 861:215-220.
van Steenwyk, R. A. and W. W. Barnett. 1998. Insect and Mite Pests. Pages 254-271 in D. E. Ramos, editor. Walnut Production Manual. Uniersity of California Press, Oakland, CA.
California County Agricultural Commissioners' Report 2012. USDA National Agricultural Stastistics Service California Field Office:Retrieved 1 Sep 2014: http://www.nass.usda.gov/Statistics_by_State/California/Publications/AgComm/Detail/
Vahdati, K., C. Leslie, Z. Zamani, and G. McGranahan. 2004. Rooting and acclimatization of in vitro-grown shoots from mature trees of three Persian walnut cultivars. Hortscience 39:324-327.
Yakabe, L. E., S. R. Parker, and D. A. Kluepfel. 2010. Incidence of Agrobacterium tumefaciens on walnut seeds used for rootstock production: Implications for crown gall management strategies. Phytopathology 100:S141-S141.