Abstract
Taxonomy of the genusPseudoperonospora, morphology ofPseudoperonospora cubensis (Berk, et Curt.) Rostow. and occurrence of its oospores, are described briefly. A list is presented of over 40 cucurbitaceous host species, representing about 20 genera, on whichP. cubensis has been recorded. Two or more races exist in Japan and the United States, but not in Europe or the Middle East. The distribution ofP. cubensis is widest on all continents on cucumbers (70 countries) and muskmelon (50 countries); onCucurbita and watermelons it extends to about 40 and 25 countries, respectively.
P. cubensis may overwinter as oospores, though this seems rare, and on wild hosts or crops grown in the open or under cover. Airborne sporangia may also reach cooler countries from regions with mild winters.
Apart from the leaf wetness essential for infection, the factors determining disease progress are: rate of foliage growth and physiological age of the host; amount of primary inoculum available, light, and the rate at which lesions necrotize. The interaction of these factors is described for early, mid-season, and late crops. Losses caused byP. cubensis depend on the growth stage at which the crop is attacked, and on the rate of foliage and pathogen development. Breeding has produced downy mildew resistant lines of cucumbers, used chiefly in the United States, and some resistant lines of melons and watermelons. The most important agricultural practices used to restrict downy mildew development are proper irrigation management and avoidance of sowing in proximity to infected crops.
Success of control by protectant chemicals depends largely on proper timing of applications. Proximity of inoculum sources, hours of leaf wetness, age of crop, and irrigation practices are the principal factors that determine when to begin treatments. These factors and rate of leaf formation determine the frequency of applications. Application of systemic fungicides is much easier to time correctly.
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Anon. (1926) Report of the Guam Agricultural Experiment Station, 1925. (Rev. appl. Mycol. 6: 470, 1926.)
Anon. (1952) Annual Report, Kenya, Department of Agriculture, 1950, Vol. II.
Anon. (1960) Index of Plant Diseases in the United States.Handbk U.S. Dep. Agric. 165.
Anon. (1972) A List of Plant Diseases, Insect Pests and Weeds in Korea. The Korean Society of Plant Protection.
Bailey, A.G. (1966) A Check List of Plant Diseases in Nigeria.Memo. Fed. Rep. Nigeria 96.
Bains, S.S. and Jhooty, J.S. (1976) Overwintering ofPseudoperonospora cubensis causing downy mildew of muskmelon.Indian Phytopath. 29: 201–202.
Bains, S.S. and Jhooty, J.S. (1976) Host-range and possibility of pathological races inPseudoperonospora cubensis — cause of downy mildew of muskmelon.Indian Phytopath. 29: 214–216.
Bains, S.S. and Jhooty, J.S. (1978) Relationship between mineral nutrition of muskmelon and development of downy mildew caused byPseudoperonospora cubensis.Pl. Soil 49: 85–90.
Bains, S.S. and Jhooty, J.S. (1979) Epidemiological studies on downy mildew of muskmelon caused byPseudoperonospora cubensis.Indian Phytopath. 31: 42–46.
Bains, S.S., Sokhi, S.S. and Jhooty, J.S. (1977)Melothria maderaspatana — a new host ofPseudoperonospora cubensis.Indian J. Mycol. Pl. Path. 7: 86.
Barat, H. (1966) Notes de Phytopathologie Gabonnaise. Inst. Rech. Agron. Trop. Cult. (I.R.A.T.). (Rev. appl. Mycol. 46: 1941, 1947.)
Barnes, W.C. (1948) The performance of Palmetto, a new downy mildew-resistant cucumber variety.Proc. Am. Soc. hort. Sci. 51: 437–441.
Barnes, W.C., Clayton, C.N. and Jenkins, J.M. (1946) The development of downy mildewresistant cucumbers.Proc. Am. Soc. hort. Sci. 47: 357–360.
Barnes, W.C. and Epps, W.M. (1954) An unreported type of resistance to cucumber downy mildew.Pl. Dis. Reptr 38: 620.
Berkeley, M.S. and Curtis, A. (1868)Peronospora cubensis.J. Linn. Soc. Bot. 10: 363.
Bisessar, A.S. (1962) A revised list of diseases of economic plants in British Guiana 1962. Agric. Inf. Dir., Min. Agric, Georgetown.
Blazquez, C.H. (1970) Varietal resistance of three cucumber foliar diseases in Southwest Florida.Pl. Dis. Reptr 54: 52–55.
Boelema, B.H. (1967) Downy mildew of cucurbits.Fmg S. Afr. 43: 3, 9.
Bohn, G.W., Mets, K., Breed, J.B. and Whitaker, T.W. (1964) An unusual downy mildew epiphytotic on muskmelon in the Imperial Valley in California.Pl. Dis. Reptr 48: 258.
Boisson, C. and Renard, J.L. (1967) Les maladies cryptogamiques des plantes maraîchères en Côte d’lvoire.Agron. Trap. 22: 699–755.
Boughey, A.S. (1946) A preliminary list of plant diseases in the Anglo-Egyptian Sudan.Mycol. Pap. 14. Imp. Myc. Inst., Kew, Surrey.
Boughey, A.S. (1947) The effect of rainfall on plant disease distribution in the Anglo-Egyptian Sudan.Mycol. Pap. 19. Imp. Myc. Inst., Kew, Surrey.
Bouhot, D. and Mallamaire, A. (1965) Les principales maladies des plantes cultivées en Sénégal. Tome I.
Butler, E.J. and Bisby, G.R. (1931) The fungi of India. Imp. Council of Agric. Res. India, Scient. Monogr. no. 1, Calcutta.
Chandrassikul, A. (1962) A Preliminary Host List of Plant Diseases in Thailand.Tech. Bull. Dep. Agric. Bangkok 6.
Chardon, C.E. (1928) Contribution al estudia de la flora micologica de Colombia.Bol. R. Soc. Esp. Hist. Nat. 28: 111–124.
Chen, C.P., Sung, C.-C. and Ho, C.-C. (1959) [A brief report of the discovery of oospores of downy mildew of cucumbers (Pseudoperonospora cubensis (B. and C.) Rost.).]Zhibing Zhishi 3: 144–145. (in Chinese) (Rev. appl. Mycol. 40: 393-394, 1961.)
Ciferri, R. (1938) Mycoflora domingensis exsiccata (Cent. III, No. 201-300).Annls mycol. 36: 198–245.
Clinton, C.P. (1905) Downy mildew, or blight,Peronoplasmopara cubensis (B. and C.) Clint., of muskmelons and cucumbers.A. Rep. Conn. St. Agric. Exp. Stn. 1904 28: 329–362.
Cohen, Y. (1969) Parasitaric Ecology of Cucumber Downy Mildew. Ph. D. thesis, The Hebrew University of Jerusalem, Israel. (Hebrew, with English summary)
Cohen, Y. (1976) Quantitation of resistance of cucumbers and cantaloups toPseudoperonospora cubensis.Phytoparasitica 4: 25–31.
Cohen, Y. (1980) The downy mildew of cucurbits.in: Spencer, D.M. [Ed.] The Downy Mildews. Academic Press, London.
Cohen, Y., Perl, M. and Rotem, J. (1971) The effect of darkness and moisture on sporulation ofPseudoperonospora cubensis in cucumbers.Phytopathology 61: 594–595.
Cohen, Y. and Rotem, J. (1971) Dispersal and viability of sporangia ofPseudoperonospora cubensis.Trans. Br. mycol. Soc. 57: 67–74.
Cohen, Y. and Rotem, J. (1971) Field and growth chamber approach to epidemiology ofPseudoperonospora cubensis on cucumbers.Phytopathology 61: 736–737.
Conners, I.L. (1967) An annotated index of plant diseases in Canada.Publ. Can. Dep. Agric. Res. Br. 1251.
Cook, M.T. and Roque, A. (1937)in: A. Rep. Agric. Exp. Stn, Rio Piedras, Puerto Rico, 1935–1936.
Crandall, B.S., Abrego, L. and Patino, B. (1951) A check list of the diseases of economic plants of El Salvador, Central America.Pl. Dis. Reptr 35: 545–554.
Crueger, G. (1974) Starkes Auftreten des Falschen Mehltaus (Erreger:Pseudoperonospora cubensis (Berk. et Curt.) Rostow.).NachrBl. dt. PflSchutzdienst 26: 145–148.
Cuturilo, S. (1952) Stetocine i bolesti biljaka na teritoriji NR Srbje u 1951 godini.Zasht. Bilja 11: 21–42. (Rev. appl. Mycol. 33: 279, 1954.)
Dadant, R., Rasolofo, M. and Baudin, P. (1961) Liste des maladies des plantes cultivées à Madagascar. Inst. Rech. Agron. de Madagascar, 1960. (Rev. appl. Mycol. 40: 405, 1961.)
Damiano, A. (1973) Una nuova peronospora delle cucurbitacee.Lotta Antiparass. 5: 12–13. (Cited by Crueger, no. 39.)
De Carvalho, T. (1948) Relacao preliminar de doencas encontradas em plantes e insectos com anatacoes fitopatologicas. Reparticao de Agric, Colonia de Mozambique.
Deighton, F.C. (1956) Diseases of cultivated and other economic plants in Sierra Leone. Publ. Govt. Sierra Leone.
D’Ercole, N. (1975) La peronospora del cetriolo in coltura protetta.Inftore fitopatol. 25: 11–13.
De Segura, C.B. and Dongo, S.L. (1965) Lista de infermedades y microorganismos aislados en plantas el Peru, (mimeo.)
Dingley, J.M. (1969) Records of Plant Diseases in New Zealand.Res. Bull. N.Z. Dep. Sci. Ind. 192.
Doran, W.L. (1932) Downy Mildew of Cucumbers.Bull. Mass. Agric. Exp. Stn 283.
Duvdevani, S., Reichert, I. and Palti, J. (1946) The development of downy and powdery mildew of cucumbers as related to dew and other environmental factors.Palest. J. Bot. Rehovot Ser. 5: 127–151.
Elal, G. (1973) [Action of fungicides on powdery and downy mildew of cucurbits and effects of these diseases on yields of cucumber and squash.] M.Sc. thesis, The Hebrew University of Jerusalem, Israel. (in Hebrew)
Elenkov, E. (1975) [Some changes in diseases of vegetable crops in the glasshouse.]Rastit. Zasht. 23: 5–7. (in Bulgarian)
El Helali, A.F., Ibrahim, I.A., Assawah, M.W., Elarosi, H.M., Abou-el-Dahab, M.K., Michail, S.N. and Abd-el-Rahim, M.A. (1963) General survey of plant diseases and pathogenic organisms in the United Arab Republic (Egypt) until 1962.Res. Bull. Fac. Agric. Alexandria Univ. 8.
Epps, W.M. and Barnes, W.C. (1952) The increased susceptibility of the Palmetto cucumber to downy mildew in South Carolina.Pl. Dis. Reptr 36: 14–15.
Ezuka, A. and Komada, H. (1974) Varietal difference in resistance of cucumber to downy mildew.Bull. Tokai-Kinki Nat. Agric. Exp. Stn 27: 42–45. (Japanese, with English summary)
Firman, I.D. (1972) A List of Fungi and Plant Parasitic Bacteria, Viruses and Nematodes inFiji.Commonw. Mycol. Inst. Phytopath. Pap. 15.
Geaman, I. (1974) Morphology and biology ofPeronoplasmopara cubensis (B. and C.) Clinton causing downy mildew of cucurbits.An. Inst. Cerc. pentru Prot. Pl. 10: 151–159. (Rumanian, with English summary)
Grillo, H.V.S. (1935) Lista preliminar dos fungos assignalados em plantas do Brasil.Rodri-guesia 2: 39–96.
Harrison, A.L. and Kelbert, D.G.A. (1946)in: A. Rep. Agric. Exp. Stn, Florida, for year ending 30.6.1945.
Hecke, L. (1904) Ueber das Auftreten vonPlasmopara cubensis in Oesterreich.Z. landw. VersWes Oesterreich. (Cited by Crueger, no. 39.)
Hiura, M. and Kawada, S. (1933) [On the overwintering ofPeronoplasmopara cubensis.]Jap. J. Bot. 6: 507–513. (in Japanese) (Rev. appl. Mycol. 13: 349.)
Hopkins, J.C.F. (1960) Plant diseases in the British Colonial Dependencies.Pl. Prot. Bull. F.A.O. 8: 109.
Hughes, M.B. and Van Haltern, F. (1952) Two biological forms ofPseudoperonospora cubensis.Pl. Dis. Reptr 36: 365–367.
Ivanoff, S.C. (1944) Resistance of cantaloupes to downy mildew and the melon aphid.J. Hered. 35: 35–39.
Iwata, Y. (1941) Specialisation inPeronospora cubensis (Berk, et Curt.) Rostow. I. Comparative studies on the pathogenicities of the fungi fromCucumis sativus L. andCucurbita moschata Duch.Ann. phytopath. Soc. Jap. 11: 101–113.
Iwata, Y. (1942) Host plants ofPseudoperonospora cubensis (Berk, et Curt.) Rostow.Ann. phytopath. Soc. Jap. 12: 48–50.
Iwata, Y. (1942) Specialisation inPseudoperonospora cubensis (Berk. et Curt.) Rostow. II. Comparative studies on the morphologies of the fungi fromCucumis sativus L. andCucurbita moschata Duch.Ann. phytopath. Soc. Jap. 11: 172–185.
Iwata, Y. (1950) Specialisation inPseudoperonospora cubensis (B. and C.) Rostow. IV. Studies on the fungus from Oriental Pickling Melon (Cucumis melo var. Conomon Makino).Bull. Fac. Agric. Mie Univ. 1: 30–35.
Iwata, Y. (1951) Specialisation inPseudoperonospora cubensis (B. and C.) Rostow. III. Studies on the fungus from white gourd (Benincasa hispida Cogn.).Forschn. Geb. PflKrankh. 4: 124–128.
Iwata, Y. (1953) Specialisation inPseudoperonospora cubensis (B. and C.) Rostow. V. On the fungus from Calabash gourdLagenaria vulgaris Ser. var.clavata Ser.Bull. Fac. Agric. Mie-Univ. 6: 32–36.
Jenkins, J.M. (1942) Downy mildew resistance in cucumbers.J. Hered. 33: 35–38.
Jenkins, J.M. (1946) Studies on the inheritance of downy mildew resistance and other characters in cucumber.J. Hered. 37: 267–271.
Johnston, A. (1960) A Supplement to the Host List of Plant Diseases in Malaya.Commonw. Mycol. Inst. Mycol. Pap. 77.
Johnston, A. (1963) A Preliminary Plant Disease Survey in Hong Kong. Pl. Prod. and Prot. Div., F.A.O., Rome.
Johnston, A. (1964) Quarterly report for October-December, 1963, of the Plant Protection Committee for the S.E. Asia and Pacific region. F.A.O. Publ., Bangkok, Thailand.
Jones, J.P. (1978) Disease thresholds for downy mildew and target leafspot of cucurbits and late blight of tomatoes.Pl. Dis. Reptr 62: 798–802.
Jones, J.P. and Everett, P.H. (1966) Control of anthracnose, downy mildew and soil rot of cucumbers.Pl. Dis. Reptr 50: 340–344.
Karchi, Z. and Govers, A. (1971) [“Noy Zahov Amid,” a new cultivar of export melons.]Hassadeh 51: 377–381. (in Hebrew)
Karel, G. (1958) A Preliminary List of Plant Diseases in Turkey. Min. of Agric, Ankara.
Khosla, H.K., Dave, G.S. and Nema, K.G. (1973) Occurrence of downy mildew of parwal (Trichosanthes dioica Roxb.) in Madya Pradesh, India.JNKVV Res. J. 7: 175–177.
Kurosawa, E. (1927) [Studies onPlasmopara cubensis.]J. Nat. Hist. Soc. Formosa 17: 1–18. (in Japanese) (Rev. appl. Mycol. 7: 295.)
Leather, R.I. (1959) Diseases of Economic Plants in Ghana.Bull. GhanaMin. Fd Agric. 1.
Leather, R.I. (1967) A Catalogue of Some Plant Diseases and Fungi in Jamaica.Bull. Min. Agric. Lands, Jamaica 61 (N.S.).
Leather, R.I. and Hor, M.N. (1969) A Preliminary List of Plant Diseases in Hong Kong. Dept. Agric. and Fish., Hong Kong.
Linhart, M. (1904) DiePeronospora rectePseudoperonospora, Krankheit der Melonen und Gurken in Ungarn.Z. PflKrankh. 14: 143. (cited by Soraner, P. (1928) Handbuch der Pflanzenkrankheiten, 2. Band, 1. Teil.)
Litzenberger, S.C., Farr, M.L. and Ho Tong Lip (1963) A Supplementary List of Cambodian Plant Diseases. Ministry of Agriculture, Phnom-Penh, Cambodia.
Litzenberger, S.C. and Stevens, J.A. (1957) A Preliminary List of Nicaraguan Plant Diseases.Pl. Dis. Reptr Suppl. 243.
Manns, T.F. and Adams, J.F. (1930) Department of Plant Pathology. Annual Report for 1930.Bull. Delaware Agric. Exp. Stn 167: 35–44.
auMartin, H.E. (1970) Plant Diseases and Fungi Recorded in Saudi Arabia 1966–1970. Plant Prot. Div., Res. and Devel. Dep., Min. Agric. and Water, Kingdom of Saudi Arabia.
Miller, P.R. (1948) The research and marketing act crop plant disease forecasting project.Pl. Dis. Reptr 32: 160–166.
Mogk, M. and Hindorf, H. (1971) Parasitic fungi collected in Kenya.Nova Hedwigia 21: 479–503.
Morschel, J.R. (1960) Recorded plant diseases in and outside Australia. I. Vegetable crops. Div. Plant Quarant., Dep. of Health.
Natour, R.M. (1970) A survey of plant diseases in Saudi Arabia.Beitr. trop. subtrop. Landw. TropenvetMed. 8: 65–70.
Nattrass, R.M. (1961) Host Lists of Kenya Fungi and Bacteria.Commonw. Mycol. Inst. Mycol. Pap. 81.
Niemann, E., Lare, M., Tschinde, J. and Zakari, I. (1972) Beitrag zur Kenntnis der Pflanzen-krankheiten und -schaedlinge Togos.Z. PflKrankh. PflSchutz 79: 599–608.
Norse, D. (1974) Plant Diseases in Barbados.Commonw. Mycol. Inst. Phytopath. Pap. 18.
Novotelnova, N.S. and Legenkaya, E.I. (1963) [Diseases of agricultural plants caused byPeronospora fungi.] All-Union Inst. Pl. Prot., Leningrad, (in Russian)
Nusbaum, C.I. (1944) The seasonal spread and development of cucurbit downy mildew in the Atlantic Coastal States.Pl. Dis. Reptr 28: 82–85.
Osipyan, L.L. (1966) Materialy po Peronosporovym gribam Arminskoy S.S.R.Biol. Zh. Armen. 19: 94–100.
Palti, J. (1977)Pseudoperonospora cubensis (Berk, et Curt.) Rost.in: Kranz, J., Schmutterer, H. and Koch, W. [Eds.] Diseases, Pests and Weeds in Tropical Crops. Paul Parey, Berlin.
Palti, J. and Kenneth, R. (1980) Distribution of downy mildew fungi over the orders, families and genera of higher plants,in: Spencer, D.M. [Ed.] The Downy Mildews. Academic Press, London.
Pantidou, M.E. (1973) Fungus-host index for Greece. Benaki Phytopathology Inst., Kiphissia, Athens.
Park, M. (1935) Report on the work of the Mycological Division. Adm. Rep., Div. Agric., Ceylon, 1934. pp. D124-D131.
Parris, G.K. (1940) A check list of fungi, bacteria, nematodes, and viruses occurring in Hawaii and their hosts.Pl. Dis. Reptr Suppl. 121.
Parris, G.K. (1951) Downy mildew resistant strains of watermelon from the Dominican Republic, West Indies.Pl. Dis. Reptr 35: 399–401.
Polanco, CD. and Salas de Diaz, G. (1973) Lista de patogenos en las plantas cultivadas en Venezuela.Bol. Esp. Soc. Venez. Fitopatol. 2.
Reichert, I. (1939) Palestine: Diseases of Vegetable Crops.Int. Bull. PL Prot. 13: 225M-240M.
Riollano, A. (1943) A new variety of muskmelon for Puerto Rico.Proc. Am. Soc. hort. Sci. 42: 574.
Rodriguez, H.S. (1972) Enfermedades parasitarias de los cultivos agricolas en Mexico.Inst. Nac. Invest. Agric. SAG Mex. Foil. Misc. 23.
Roque, A. (1941)in: A. Rep. Agric. Exp. Stn, Rio Piedras, Puerto Rico, 1938–39, 1939–40.
Rostowzew, S.J. (1903) Beitraege zur Kenntnis der Peronosporeen.Flora 92: 405–433.
Rouxel, F. (1972) Le mildiou des Cucurbitacées dû àPseudoperonospora cubensis (Berk, et Curt.) Rost. signalé en France.Ann. Phytopath. INRA 4: 199–203.
Saad, A.T. and Nienhaus, F. (1969) Plant diseases in Lebanon.Z. PflKrankh. PflSchutz 76: 537–551.
Sarasola, A.A. (1944) Una enfermedad poco comun de nuestros Cucurbitaceas cultivados.Publ. tec. Dir. Agric. Buenos Aires 2: 1–9.
Scharif, G. and Ershad, D. (1966) A list of fungi on cultivated plants, shrubs and trees of Iran. Min. Agric, Pl. Pests and Dis. Res. Inst., Evin-Tehran.
Schenck, N.C. (1960) Watermelon disease incidence in Central Florida, 1931-1959.Pl. Dis. Reptr 44: 556–558.
Selby, A.D. (1897) Prevalent Diseases of Cucumbers, Melons and Tomatoes.Bull. Ohio Agric. Exp. Stn.
Selby, A.D. (1899) Additional host plants ofPlasmopara cubensis.Bot. Gaz. 27: 67–68.
Seymour, A.B. (1929) Host index of the fungi of North America. Harvard University Press, Cambridge, MA.
Shaw, D.E. (1963) Plant pathogens and other micro-organisms in Papua and New Guinea.Res. Bull. Dep. Agric, Port Moresby 1.
Shimizu, S., Kanazawa, K., Kato, A., Yokata, Y. and Koyama, T. (1963) [Studies on breeding cucumber for resistance toPseudoperonospora cubensis.]Bull. hort. Res. Stn Ser. D (Hiratsuka) 2: 65–81. (in Japanese)
Simanca, A.O., Pivarov, V.F., Ushacov, P.P. and Piedra Rodriguez, R. (1977) [Some results obtained in studies on resistance to mildew (Pseudoperonospora cubensis) in cucumber (Cucumis sativus L.) collections.]Acad. Cienc. Cuba Inform. Cient.-Tec. (INIFAT)6: 29–31. (in Spanish)
Simmonds, J.H. (1966) Host Index of Plant Diseases in Queensland. Queensland Dep. Primary Ind., Brisbane.
Sitterly, W.R. (1972) Breeding for disease resistance in cucurbits.A. Rev. Phytopath. 10: 471–487.
Smolak, J. (1926) [Information Service. Second Annual Rep. Phytopath. Stn, Melnik, for the year 1925-6.] pp. 90-95 (in Czech.) (Rev. appl. Mycol. 6: 213, 1927.)
Sowell, G. and Corley, W.L. (1974) PI 321005 (Tainan 2), a high quality source of resistance to three cantaloupe diseases.Pl. Dis. Reptr 58: 899–902.
Spurling, A.T. (1973) A review of mildew problems on cucurbit vegetable crops in Malawi.Pest Abstr. News Summ. 19: 42–45.
Standen, J.H. (1952) Host index of plant pathogens in Venezuela.Pl. Dis. Reptr Suppl. 212.
Stewart, R.B. and Yirgou, D. (1967) Index of Plant Diseases in Ethiopia.Bull. Exp. Stn Addis Ababa 30.
Thomas, C.E. (1970) Sporulation ofPseudoperonospora cubensis on watermelon.Pl. Dis. Reptr 54: 108–111.
Thomas, C.E. (1977) Disease development and sporulation ofPseudoperonospora cubensis on susceptible and resistant cantaloups.Pl. Dis. Reptr 61: 375–377.
Thomas, C.E. (1977) Influence of dew on downy mildew of cantaloup in South Texas.Phytopathology 67: 1368–1369.
Thomas, C.E. (1978) Reaction of susceptible and resistant cantaloups toPseudoperonospora cubensis.Pl. Dis. Reptr 62: 221–222.
Toler, R.W., Cuellar, R. and Ferrer, J.B. (1959) Preliminary survey of plant diseases in the Republic of Panama.Pl. Dis. Reptr 43: 1201–1203.
Turner, G.J. (1971) Fungi and Plant Diseases in Sarawak.Commonw. Mycol. Inst. Phytopath. Pap. 13.
Urech, P.A., Schwinn, F. and Staub, T. (1977) CGA 48988, a novel fungicide for the control of late blight, downy mildews and related soil-borne diseases.Proc. Br. Crop Prot. Conf., 1977, pp. 623–631.
Van Haltern, F. (1933) Spraying Cantaloups for the Control of Downy Mildew and Other Diseases.Bull. Ga Exp. Stn 175.
Van Vliet, G.J.A. and Meysing, W.D. (1974) Inheritance of resistance toPseudoperonospora cubensis Rost. in cucumber (Cucumis sativus L.).Euphytica 23: 251–255.
Venkatarayan, S.V. and Ventkatakrishniah, N.S. (1952) New hosts of the downy mildew of cucurbits in India.Curr. Sci. 22: 183–184.
Vestal, E.F. (1954) Some plant disease problems of Jordan.Pl. Dis. Reptr 38: 226–237.
Wallace, G.B. and Wallace, M.M. (1949) A list of plant diseases of economic importance in Tanganyika Territory.Commonw. Mycol. Inst. Mycol. Pap. 26.
Waterhouse, G.M. (1973) Plasmodiophoromycetes.in: Ainsworth, G.C., Sparrow, F.K. and Sussman, A.S. [Eds.] The Fungi. An Advanced Treatise. Vol. IV A. Academic Press, New York, NY.
Waterston, J.M. (1939) Annotated list of diseases of cultivated plants in Bermuda. Govt. Printer, Hamilton. (Rev. appl. Mycol. 18: 550, 1939.)
Welles, C.G. (undated) A provisional list of the parasitic fungi of the Philippine Islands.Philipp. Agric. Rev., pp. 149–202.
Whiteside, J.O. (1966) A revised list of plant diseases in Rhodesia.Kirkia 5: 87–196.
Wilson, G.W. (1908) Studies in North American Peronosporales. IV. Host index.Bull. Torr. Bot. Club 35: 543–554.
Winstead, N.N., Aycock, R. and Jenkins, J.M. (1957) Reactions of watermelon plant introductions and varieties to downy mildew in North Carolina.Pl. Dis. Reptr 41: 620–622.
Zazzerini, A. and Marte, M. (1972) Peronospora del melone in Umbria.Riv. Ortoflorofruttic. ital. 56: 308–310.
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Palti, J., Cohen, Y. Downy mildew of Cucurbits (Pseudoperonospora Cubensis): the Fungus and its hosts, distribution, epidemiology and control. Phytoparasitica 8, 109–147 (1980). https://doi.org/10.1007/BF02994506
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DOI: https://doi.org/10.1007/BF02994506