T.K. Hartz, P.R. Johnstone, E.M. Miyao and R.M. Davis. 2005. Mustard cover crops ineffective in soil-borne disease suppression or processing tomato yield improvement. HortScience 40:2016-2019.

Marcum, D. B., and Davis, R. M. 2006. First Report of Damping-Off of Wild Rice in California Caused by Pythium torulosum. Plant Disease 90:523.

Davis, R. M., P. D. Colyer, C. S. Rothrock, and J. K. Kochman. 2006. Fusarium Wilt of Cotton: Population Diversity and Implications for Management. Plant Disease 90: 692-703.

Davis, R. M., Hao, J. J., Romberg, M. K., Nunez, J. J., and Smith, R. F. 2006. Efficacy of germination stimulants of sclerotia of Sclerotium cepivorum for the control of white rot of garlic. Plant Disease: in press.

Hartz, T.K., P.R. Johnstone, E.M. Miyao and R.M. Davis. 2005. Mustard cover crops ineffective in soil-borne disease suppression or processing tomato yield improvement. HortScience: (in press).

Kim, Y., R. B. Hutmacher, and R. M. Davis. 2005. Characterization of California isolates of Fusarium oxysporum f. sp vasinfectum. Plant Disease 89: 366-372.

Davis, R. M. 2004. Carrot Diseases and their Management, in Diseases of Fruits and Vegetables-Diagnosis and Management. Naqvi, A. A. M.H., ed. Kluwer Academic Publishers, Dordrecht, the Netherlands.

Farrar, J. J., Pryor, B. A., and Davis, R. M. 2004. Alternaria diseases of carrot. Plant Disease 88: 776-784.

Meng, X. Q., K. C. Umesh, R. M. Davis, and R. L. Gilbertson. 2004. Development of PCR-based assays for detecting Xanthomonas campestris pv. carotae, the carrot bacterial leaf blight pathogen, from different substrates. Plant Disease 88:1226-1234.

Koike, S. T., K. V. Subbarao, R. M. Davis, and T. A. Turini. 2003. Diseases of vegetables caused by soilborne pathogens. DANR Publication 8099. 13 pp.

Guzman, R. A., R. M. Davis, and J. J. Marois. 2003. Effect of relative humidity and high temperature on spore germination and development of tomato powdery mildew. Crop Protection 22: 1157-1168.

Cai, G., L. R. Gale, R. W. Schneider, H. C. Kistler, R. M. Davis, K. S. Elias and E. M. Miyao. 2003. Origin of Race 3 of Fusarium oxysporum f. sp. lycopersici at a Single Site in California. Phytopathology 93:1014-1022.

Aegerter, B. J., J.J. Nunez, and R. M. Davis. 2003. Environmental Factors Affecting Rose Downy Mildew and Development of a Forecasting Model for a Nursery Production System. Plant Disease 87:732-738.

Aegerter, B. J., J.J. Nunez, and R. M. Davis. 2002. Detection and Management of Downy Mildew in Rose Rootstock. Plant Disease 86:1363-1368.

Aegerter, B. J., Greathead, A.S., Pierce, L.E., and Davis, R. M. 2002. Mefenoxam-resistant isolates of Pythium irregulare in an ornamental greenhouse in California. Plant Disease 86:692.

LeStrange, M., Frate, C. A., and Davis, R. M. 2002. Mushrooms and other Nuisance Fungi in Lawns. Pest Notes, Publication 74.

Davis, R. M., and R. N. Raid, eds. 2002. Compendium of Umbelliferous Crop Diseases. American Phytopathological Society Press, St. Paul.

Farrar, J. J., J. J. Nunez, and R. M. Davis. 2002. Repeated soil applications of fungicide reduce activity against cavity spot in carrots. Calif. Agric. 56(2):76-79.

Nunez, J. J., Gilbertson, R. L., Meng, X., and Davis, R. M. 2002. First report of Xanthomonas leaf blight of onion in California. Plant Disease 86:330.

Pryor, B. M., Strandberg, J. O., Davis, R. M., Nunez, J.J., and Gilbertson, R. L. 2002. Survival and Persistence of Alternaria dauci in Carrot Cropping Systems. Plant Disease 86:1115-1122.

Koike, S.T., Smith, R.F., Davis, R. M., Nunez, J.J., and Voss, R.E. 2001. Rust disease continues to threaten California garlic crop. Calif. Agric. 55(5): 35-39.

Koike, S.T., Smith, R.F., Davis, R. M., Nunez, J.J., and Voss, R.E. 2001. Characterization and control of garlic rust in California. Plant Disease 85:585-591.

Farrar, J.J., R.M. Davis, C.F. Fouche, and W.M. Canevari. 2000. First report of Verticillium dahliae on Stevia (Stevia rebaudiana). Plant Disease 84:922.

Miyao, G. M., R. M. Davis, and H. J. Phaff. 2000. Outbreak of Eremothecium fruit rot of tomato in California. Plant Disease 84:594.

Arredondo, C. R., and R. M. Davis. 2000. First report of Pseudomonas syringae pv. tomato race 1 on tomato in California. Plant Disease 84:371.

Gavino, P. D., C. D. Smart, R.W. Sandrock, J. S. Miller, P. B. Hamm, T. Y. Lee, R. M. Davis, and W. E. Fry. 2000. Implications of sexual reproduction for Phytophthora infestans in the United States: generation of an aggressive lineage. Plant Disease 84: 731-735.

Aegerter, B. J., T. R. Gordon, and R. M. Davis. 2000. Occurrence and pathogenicity of fungi associated with melon vine decline in California. Plant Disease 84:224-230.

Farrar, J. J., J. J. Nunez, and R. M. Davis. 2000. Influence of soil saturation and temperature on Erwinia chrysanthemi soft rot of carrot. Plant Disease 84: 665-668.

Santos, P., J. J. Nunez, and R. M. Davis. 2000. Influence of gibberellic acid on carrot growth and severity of Alternaria leaf blight. Plant Disease 84:555-558.

Pryor, B.M., R. M. Davis, and R. L. Gilbertson. 2000. A toothpick inoculation method for evaluating carrot cultivars for resistance to Alterniaria radicina. HortScience: 35:1099-1102.

Davis, R. M., E. J. Sorenson, and J. J. Nunez. 1999. The Importance of Pesticides and other Pest Management Practices in U.S. Carrot Production. U.S.D.A. National Agricultural Pesticide Impact Assessment Program, UCD Plant Pathology Document November 99-007. 93 pp.

Smith, R. F., S. T. Koike, R. M. Davis, K. V. Subbarao, and F. Laemmlen. 1999. Several fungicides control powdery mildew in peppers. California Agriculture 53 (No. 6):40-43.

Aegerter, B. J., and R. M. Davis. 1998. First report of Pythium polymastum on broccoli and cauliflower in Californa. Plant Disease 82:1282.

Davis, R. M., and J. J. Nunez. 1998. Influence of crop rotation on the incidence of Pythium- and Rhizoctonia-induced carrot root dieback. Plant Disease 83:146-148.

Davis, R. M., G. Hamilton, W. T. Lanini, T. H. Spreen, and C. Osteen. 1998. The Importance of Pesticides and other Pest Management Practices in U.S. Tomato Production. U.S.D.A. National Agricultural Pesticide Impact Assessment Program, Document 1-CA-98. 263 pp.

Kodira, U. C., R. M. Davis, and R. L. Gilbertson. 1998. Seed contamination thresholds for development of carrot bacterial blight caused by Xanthomonas campestris pv. carotae. Plant Disease 82:1271-75.

Pryor, B. M., R. M. Davis, and R. L. Gilbertson. 1998. Detection of soilborne Alternaria radicina and its occurrence in California carrot fields. Plant Disease 82: 891-895.

Davis, R. M., H. Wang, B. Falk, and J. J. Nunez. 1998. Curly top virus found in perennial shrubs in foothills. California Agriculture 52 (No. 5):38-40.

Bell, A. A., L. Liu, B. Reidy, R. M. Davis, and K. V. Subbarao. 1998. Mechanisms of subsurface drip irrigation-mediated suppression of lettuce drop caused by Sclerotinia minor. Phytopathology 88: 252-259.

Bell, A. A., J. C. Hubbard, L. Liu, R. M. Davis, and K. V. Subbarao. 1998. Effects of chitin and chitosan on the incidence and severity of Fusarium yellows of celery. Plant Disease 82: 322-328.

Davis, R. M., K. V. Subbarao, R. N. Raid, and E. A. Kurtz, eds. 1997. Compendium of Lettuce Diseases. American Phytopathological Society Press, St. Paul.

Gwynne, B. J., T. R. Gordon, and R. M. Davis. 1997. A new race of Fusarium f. sp. melonis causing Fusarium wilt of muskmelon in the Central Valley of California. Plant Disease 81:1095.

Guzman, P., M. R. Rojas, R. M. Davis, K. Kimble, R. Stewart, F. J. Sundstrom, and R. L. Gilbertson. 1997. First report of bean common mosaic necrosis potyvirus (BCMNV) infecting common bean in California. Plant Disease 81:831.

Wang, H., and R. M. Davis. 1997. Susceptibility of selected cotton cultivars to seedling disease pathogens and benefits of chemical seed treatments. Plant Disease 81:1085-1088.

Davis, R. M., J. J. Nunez, and K. V. Subbarao. 1997. Benefits of cotton seed treatments for the control of seedling diseases in relation to inoculum densities of Pythium species and Rhizoctonia solani. Plant Disease 81:766-768.

Davis, R. M., E. M. Miyao, R. Mullen, J. Valencia, D. May, and B. J. Gwynne. 1997. Benefits of applications of chlorothalonil for the control for blackmold of tomato. Plant Disease 81: 601-603.

 

Vazquez, M. R., R. M. Davis, and A. S. Greathead. 1996. First report of Pythium mastophorum on celery in California. Plant Disease 80:709.

Arredondo, C. R., R. M. Davis, D. M. Rizzo, and R. Stahmer. 1996. First report of powdery mildew of tomato in California caused by Oidium sp. Plant Disease 80:1303.

Davis, R. M., J. J. Nunez, R. N. Vargas, W. L. Weir, S. D. Wright, and D. J. Munier. 1996. Metam-sodium kills beneficial soil fungi as well as cotton pests. California Agriculture 50(No. 5):42-44.

Warfield, C. Y., and R. M. Davis. 1996. Importance of the husk covering on the susceptibility of corn hybrids to Fusarium ear rot. Plant Disease 80:208-210.

Subbarao, K. V., A. Chassot., T. R. Gordon, J. C. Hubbard, P. Bonello, R. Mullin, D. Okamoto, R. M. Davis, and S. T. Koike. 1995. Genetic relationships and cross pathogenicities of Verticillium dahliae isolates from cauliflower and other crops. Phytopathology 85:1105-1112.

threatens coastal cauliflower crop. California Agriculture 50(No. 2):24-27.

Koike, S. T., K. V. Subbarao, R. M. Davis, T. R. Gordon. 1995. Verticillium wilt threatens coastal cauliflower crop. California Agriculture 50(No. 2):24-27.

Davis, R. M., C. Q. Winterbottom, and J. L. Aquiar. 1995. First report of Pythium uncinulatum on Romaine lettuce in California. Plant Disease 79:642.

Bruton, B. D., R. M. Davis, and T. R. Gordon. 1995. Occurrence of Acremonium sp. and Monosporascus cannonballus in the major cantaloupe and watermelon growing areas of California. Plant Disease 79:754.

Cafe-Filho, A. C., J. M. Duniway, and R. M. Davis. 1995. Effects of the frequency of furrow irrigation on root and fruit rots of squash caused by Phytophthora capsici. Plant Disease 79:44-48.

Guzman, P., R. M. Davis, R. L. Gilbertson, S. N. Smith, and S. Temple. 1995. First report of Ascochyta blight of garbanzo in California. Plant Disease 79:82.

Wang, H., R. M. Davis, and P. Mauk. 1995. Effects of irrigation, planting depth, and fungicide seed treatment on sugar beet stand establishment. J. Sugar Beet Research 32:1-7.

Davis, R. M., C. Q. Winterbottom, S. M. Mircetich, and J. Valencia. 1994. First report of Phytophthora root rot of parsley. Plant Disease 78:1122.

Koike, S. T., K.V. Subbarao, R. M.Davis, T. R. Gordon, and J. C. Hubbard. 1994. Verticillium wilt of cauliflower in California. Plant Disease 78:1116-1121.

Pryor, B. M., R. M. Davis, and R. L. Gilbertson. 1994. Detection and eradication of Alternaria radicina on carrot seed. Plant Disease 78:452-456.

Hoenisch, R. W., and R. M. Davis. 1994. Relationship between kernel pericarp thickness and susceptibility to Fusarium ear rot in field corn. Plant Disease 78:517-519.

Schrandt, J. K., R. M. Davis, and J. J. Nunez. 1994. Host range and influence of nutrition, temperature, and pH on growth of Pythium violae from carrot. Plant Disease 78:335-338.

Davis, R. M., K. D. Marshall, and J. Valencia. 1993. First report of Fusarium wilt of basil in California. Plant Disease 77:537.

Ferguson, W. L., L. J. Moffitt, and R. M. Davis. 1992. Short-run welfare implications of restricting fungicide use in vegetable production. J. Agribusiness 10:41-50.

Vivoda, E., R. M. Davis, J. J. Nunez, and J. P. Guerard. 1991. Factors affecting the development of cavity spot of carrot. Plant Disease 75:519-522.

Farrar, J. J., and R. M. Davis. 1991. Relationships among ear morphology, western flower thrips, and Fusarium ear rot of corn. Phytopathology 81:661-666.

Falk, B. W., R. M. Davis, and M. Piechocki. 1991. Identification of carrot thin leaf virus in California carrots. Plant Disease 75:319.

Davis, R. M., J. J. Nunez, J. P. Guerard, and E. Vivoda. 1991. If registered, fungicide could reduce cavity spot in carrots. Calif. Agriculture 45(2):29-30.

Teviotdale, B., R. M. Davis, J. P. Guerard, and D. H. Harper. 1990. Method of irrigation affects sour skin rot of onion. Calif. Agriculture 44(5):27-28.

Bishop, A. L., and R. M. Davis. 1990. Internal decay of onions caused by Enterobacter cloacae. Plant Disease 74:692-694.

Teviotdale, B., R. M. Davis, J. P. Guerard, and D. H. Harper. 1989. Effect of irrigation management on sour skin of onion. Plant Disease 73:819-822.

Davis, R. M., F. R. Kegel, W. M. Sills, and J. J Farrar. 1989. Fusarium ear rot of corn: The UC screening and research programs. Calif. Agriculture 43(6):4-5.

Tsao, P. H., J. P. Martin, and R. M. Davis. 1989. The Citrus Replant Problem, in Reuthe W., E. C. Calavan, and G. E. Carmen (eds.). The Citrus Industry V: 261-279. Univ. Calif. Press, Berkeley.

Liddell, C. M., R. M. Davis, J. J. Nunez, and J. P. Guerard. 1989. Association of Pythium spp. with carrot root dieback in the San Joaquin Valley of California. Plant Disease 73:246-249.

Davis, R. M. 1989. Effectiveness of fosetyl A1 against Phytophthora parasitica on tomato. Plant Disease 73:215-217.

Heald, C. M., B. D. Burton, and R. M. Davis. 1989. Influence of Glomus intraradices and soil phosphorus on Meloidogyne incognita infecting Cucumis melo. J. Nematol. 21:69-73.

Davis, R. M., K. A. Kimble, and J. J. Farrar. 1988. A third race of Fusarium oxysporum f. sp. lycopersici identified in California. Plant Disease 72:453.

Davis, R. M., C. J. Farrald, and D. Davila. 1987. Botryodiplodia trunk lesions in Texas citrus. Plant Disease 71:848-849.

Okamura, J. K., and R. M. Davis. 1987. Latent and saprophytic fungal infections of grapefruit in South Texas. Texas J. of Ag. and Nat. Resources 1:19-20.

Davis, R. M., H. S. Wilhite, and S. Hadi. 1986. Influence of mycorrhizal fungi on root rots of citrus. J. Rio Grande Valley Hort. Soc. 39:17-21.

Davis, R. M., and J. E. Fucik. 1986. Effect of girdling sour orange seedlings on mycorrhizal development. HortScience 21:302-304.

Davis, R. M., and D. W. Burger. 1986. Effect of film wrapping on postharvest decay incidence of Texas grapefruit. J. Rio Grande Valley Hort. Soc. 39:23-30.

Davis, R. M., and H. S. Wilhite. 1985. Control of Tylenchulus semipenetrans on citrus with oxamyl and fenamiphos. Plant Disease 69:974-976.

Davis, R. M. 1985. Timing of a single fungicide application for control of greasy spot rind blotch on grapefruit. J. Rio Grande Valley Hort. Soc. 38:37-41.

Edriss, M., R. M. Davis, and D. W. Burger. 1984. Influence of mycorrhizal fungi on cytokinin production in sour orange. J. Amer. Soc. Hort. Soc. 109:587-590.

Edriss, M., R. M. Davis, and D. W. Burger. 1984. Increased growth responses of citrus by several species of mycorrhizal fungi. HortScience 19:537-539.

Davis, R. M., J. W. Sauls, and H. S. Wilhite. 1984. Survey for tristeza in Texas Citrus. J. Rio Grande Valley Hort. Soc. 37:61-64.

Davis, R. M. 1984. Distribution of Tylenchulus semipenetrans Cobb in a Texas grapefruit orchard. J. Nematol. 16:313-317.

Davis, R. M. 1984. Comparison of numbers of Tylenchulus semipenetrans Cobb on six citrus rootstocks in South Texas. J. Rio Grand Valley Hort. Soc. 37:95-98.

Davis, R. M., and H. S. Wilhite. 1983. Relationship between melanose incidence and dead wood in Texas grapefruit. J. Rio Grande Valley Hort. Soc. 36:41-49.

Timmer, L. W., and R. M. Davis. 1982. Yield losses from the citrus nematode in Texas grapefruit. J. Nematology 14:582-585.

Davis, R. M., C. M. Heald, and L. W. Timmer. 1982. Chemical control of the citrus nematode. J. Rio Grande Valley Hort. Soc. 35:59-63.

Davis, R. M., and D. W. Burger. 1982. New fungicides for the postharvest control of stem-end-rot in Texas grapefruit. HortScience 17:976-977.

Davis, R. M. 1982. Phytophthora foot rot control with the systemic fungicides metalaxyl and fosetyl aluminum. Proc. Int. Soc. Citriculture 5:349-351.

Davis, R. M. 1982. Mycorrhizal fungi associated with citrus in South Texas. J. Rio Grande Valley Hort. Soc. 35:127-129.

Davis, R. M. 1982. Control of Phytophthora root and foot rot of citrus with systemic fungicides metalaxyl and phosethyl aluminum. Plant Disease 66:218-220.

Davis, R. M., and J. A. Menge. 1981. Phytophthora parasitica inoculation and intensity of vesicular-arbuscular mycorrhiza in citrus. New Phytologist 87:705-715.

Timmer, L. W., R. J. Reeve, and R. M. Davis. 1980. Epidemiology and control of citrus greasy spot on grapefruit in Texas. Phytopathology 70:863-867.

Davis, R. M., and J. A. Menge. 1980. Influence of Glomus fasciculatus and soil phosphorus on Phytophthora root rot of citrus. Phytopathology 70:447-452.

Davis, R. M., and R. F. Leyden. 1980. Twig dieback of Star Ruby grapefruit. J. Rio Grande Valley Hort. Soc. 34:115-119.

Davis, R. M. 1980. Influence of Glomus fasciculatus on Thielaviopsis basicola root rot of citrus. Plant Disease 64:839-840.

Davis, R. M. 1980. Evidence for the involvement of Diplodia natalensis in Rio Grande gummosis of citrus. J. Rio Grande Valley Hort. Soc. 34:55-60.

Davis, R. M., J. A. Menge, and D. C. Erwin. 1979. Influence of Glomus fasciculatus and soil phosphorus on Verticillium wilt of cotton. Phytopathology 69:453-456.

Davis, R. M. 1979. Influence of vesicular-arbuscular mycorrhizae on Phytophthora root rot of citrus. Ph.D. Diss. Univ. of California, Riverside. 102 pp. (Diss. Abstr. 40:516B.)

Menge, J. A., R. M. Davis, E. L. V. Johnson, and G. A. Zentmeyer. 1978. Mycorrhizal fungi increase growth and reduce transplant injury in avocado. Calif. Agriculture 32(4):6-7.

Davis, R. M., J. A. Menge, and G. A. Zentmeyer. 1978. Influence of vesicular- arbuscular mycorrhizae on Phytophthora root rot of three crop plants. Phytopathology 68:1614-1617.

Menge, J. A., S. Nemec, R. M. Davis, and V. Minassian. 1977. Mycorrhizal fungi associated with citrus and their possible interactions with pathogens. Proc. Int. Soc. Citriculture 3:872-876.