Found inside – Page 13... lettuce drop incited by Sclerotinia minor, lettuce mosaic virus resistance 74-1077M 1992 Partial resistance to lettuce drop incited by Sclemtinia minor, ... Carpogenic germination of Sclerotinia minor and potential distribution in Australia. COMMENTS: Do not make more than three applications per crop. Comparative analyses of lettuce drop epidemics caused by Sclerotinia minor and S. sclerotiorum. Found inside5 THE LETTUCE " DROP " DUE TO SCLEROTINIA MINOR W. S. BEACH + Part I contains facts of general interest concerning the disease including control measures . When moisture is present, a white mycelium can form (Figure 2) and sclerotia can develop (Figure 3 and Figure 4) where the leaf is in contact with the soil. Sclerotinia minor only infects the stems and leaves in contact with the soil. Sclerotinia minor seldom produces spores (Fig. Plant Disease. KENJA® 400SC Fungicide, incorporating the newest SDHI technology, is a group 7 fungicide, proven to control lettuce (Sclerotinia) drop, with excellent activity on both Sclerotinia sclerotiorum and Sclerotinia minor. Plant Health Progress. Most Sclerotinia drop on lettuce in Arizona is initiated by direct germination of sclerotia â Direct germination of sclerotia favored by wet soil at temperatures ranging from 50 to 75°F. 97 (9), 1250. http://apsjournals.apsnet.org/loi/pdis DOI:10.1094/PDIS-01-13-0095-PDN, Lee SangYeob, Choi HyoWon, Weon HangYeon, Han JiHee, Kim DaYeon, Ahn SungHo, 2018. Adams PB, 1987. Introduction. 100 (1), 211. Lettuce drop is one of the most destructive diseases on lettuce in the major U.S. lettuce production areas in California and Arizona. Many lettuce diseases can cause considerable damage and occasionally complete crop loss. This would clearly compliment our success in controlling S. sclerotiorum and would complete our ultimate objective of several years of providing effective and economical biocontrol options for managing lettuce drop in Arizona, regardless of the causal agent. Two species of Sclerotinia infect lettuce in California and cause the lettuce drop disease: in coastal growing areas Sclerotinia minor is the primary species of importance, while in other areas S. sclerotiorum is more prevalent. Sclerotinia minor only infects the stems and leaves in contact with the soil. Avoid overly wet soils and keep the bed surface as dry as possible with careful irrigation. Lettuce drop is a lettuce disease that results in browning or wilting of leaves, plant collapse, and death. Lettuce drop caused by Sclerotinia spp. Diseases such as downy mildew (pathogen: Bremia lactucae) and lettuce drop (pathogen: Sclerotinia minor) can cause substantial damage and crop loss in iceberg lettuce production. â Read our causing the soil to be wetter and cooler than soil away from the plant. Compendium record. Avoid known crop hosts including beans, cauliflower, celery, corn salad, endive, escarole, fennel, pepper, radicchio, and tomato. The ascomycete fungus S. sclerotiorum is the primary causal agent for white mold. Sclerotinia leaf drop in Arizona is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Generate a print friendly version containing only the sections you need. There are no pictures available for this datasheet, Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License, Whetzelinia sclerotiorum (LIB.) Cool and moist environmental conditions favor disease development. 34 (54), 19-26. http://www.doiserbia.nb.rs/img/doi/1018-1806/2011/1018-18061154019K.pdf DOI:10.2298/HEL1154019K, Khangura R, MacLeod W J, 2013. First report of Sclerotinia minor infecting Eclipta prostrata in Texas. It is caused by the soilborne fungal pathogens Sclerotinia minor and S. sclerotiorum. Literature reports of crop losses range from negligible to 100%. Found inside – Page 518Sclerotia of S. sclerotiorum ' minor ' can germinate in any of three ways : hyphal , mycelial and stipe ... The lettuce " drop " due to Sclerotinia minor . Widely consumed by the Brazilian, lettuce has a cultivated area of 35,000 ha. Interpretive Summary: The fungal pathogen Sclerotinia minor causes the disease lettuce drop. Found inside – Page 28Sclerotiniose of lettuce in Arizona . Arizona Agr . Exp . Sta . Tech . Bul . 63 : 1936 . JAGGER , I. C. Sclerotinia minor n . sp . , the cause of a decay of ... Diseases caused by S. sclerotiorum are known by several names, including white mould or nest of bean, drop of lettuce and sclerotinia rot of cabbage, carrot, celery, potato and tomato. The disease is only partially controlled by chemical and cultural practices, and resistant lettuce cultivars do not currently exist. Helia. N.C. Found inside – Page 858Lettuce (Lactuca sativa) Seed for sowing Australia, Italy, Japan, ... rot of tomato) (b) Sclerotinia minor (Sclerotinia disease of lettuce) (c) Xanthomonas ... is an economically important disease of lettuce (Lactuca sativa L.), and cultivars with resistance to mycelial infection by Sclerotinia sclerotiorum (Lib.) Comparison of isolates of Sporidesmium sclerotivorum in vitro and in soil for potential as active agents in microbial pesticides. UC ANR Publication 3450, S.T. Sclerotinia is a major disease problem in vegetable production, including lettuce, green bean and cabbage in Victoria, Australia. © 1996–2021 Statewide IPM Program, Agriculture and Natural Resources, University of California Regents of the University of California unless otherwise noted. DOI:10.1071/AP02022, Faske T R, Emerson M, Hurd K, 2014. KORF et DUMONT; International Common Names. Wallingford, UK: CABI, Ekins M G, Aitken E A B, Goulter K C, 2002. ... of host resistance to this pathogen but scientists in California were the first to observe that the species Sclerotinia minor formed a sclerotia (resting structure) in lettuce stem. Sclerotinia minor infects lettuce almost exclusively by soilborne mycelia, and does not produce the infective airborne ascospores typical of S. sclerotiorum two modern cultivars have been described by their developers as (Subbarao, 1998). Sclerotinia Drop is a DOI:10.1094/PD-89-0717, Karov I, Mitrev S, Maširević S, Kovacevik B, 2011. Sclerotinia diseases, caused by S. sclerotiorum and to a lesser extent S. minor and S. trifoliorum, affect a wide range of crops. Leaf drop of lettuce is caused by the plant pathogenic fungi Sclerotinia minor and S. sclerotiorum. Treatments were applied on Dec 6 and Dec 14, 2011. Among the diseases that might infect this crop, white mold causes major concerns for producers. First report of sunflower white mold caused by Sclerotinia minor jagger in Inner Mongolia region, China. Sclerotinia sclerotiorum f.sp. This season, California and Arizona growers have an entirely new fungicide option at their disposal. Found inside – Page 495Activity of boscald, fenhexamid, fluzinam, fludioxonil and vinclozolin on growth of Sclerotinia minor and S. sclerotiorum and development of lettuce drop. Sclerotinia minor. This species also has an extremely broad host range. Occurrence of Sclerotinia rot by Sclerotinia minor on Aster yomena in Korea. Sclerotinia Drop. Sclerotinia minor occurs on more than 90 hosts, including peanut, lettuce and potato. Fungicides may be required for control of lettuce drop, especially if disease was present in prior lettuce crops. Crops where average annual losses from Sclerotiniadiseases are Evaluate the efficacy of BQMulch in reducing Symptoms.Two species of Sclerotinia infect lettuce in California and cause a disease known as lettuce drop: in coastal growing areas Sclerotinia minor is the primary species of importance, while in other areas S. sclerotiorum is more prevalent.Sclerotinia minor only infects the stems and leaves in contact with the soil. [Distribution map]. Contans WG can be used in the soil for all crops susceptible to Sclerotinia sclerotiorum and Sclerotinia minor infection. Found inside – Page 74Control of lettuce drop in Oswego County , New York during 1980 ( Lettuce ( Lactuca sativa Green Lakes ' ' Mesa ' ) , drop ; Sclerotinia minor ) . Field experiments were conducted at Spence Road site and at the Hartnell College East Campus site in Salinas, CA, to determine the effects of crop rotation with broccoli or a fallow period on lettuce drop caused by Sclerotinia minor and the density of pathogen sclerotia in the soil. Sclerotinia sclerotiorum forms sclerotia that are larger (0.25–0.50 inch) than those of S. minor. For more information about reported hosts for these pathogens, visit the USDA Fungus-Host Distributions Database. Sclerotinia sclerotiorum and S. minor have a wide host range infecting allium (onion, garlic), brassica (cabbage, broccoli), solanaceae (pepper, potato), cucurbits (cucumber, squash), lettuce, and sweetpotato crops. Infection results in a watery, soft rot that is accompanied by white mycelial growth and formation of sclerotia. Found inside – Page 605result in higher lettuce drop caused by S. minor and increased incidence of ... the balance of the two Sclerotinia spp. that has long existed in California. "The modern cultivars were susceptible to rapid basal stem and root rot by Sclerotinia minor. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. COMMENTS: Do not make more than two applications per season. General information about Sclerotinia minor (SCLEMI) Name Language; sclerotinia disease of lettuce: English: Halsfäule: Salat: German Sclerotinia leaf drop in Arizona is caused by two soil-borne fungi, Sclerotinia minor and S. sclerotiorum. Plant Disease, 70(11):1043-1046. Bell AA, Liu L, Reidy B, Davis RM, Subbarao KV. First report of Sclerotinia blight of peanut caused by Sclerotinia minor in Arkansas. A&T State University, in all 100 counties and with the Eastern Band of Cherokee Lettuce cultivars are susceptible to a number of diseases such as downy mildew (Bremia lactucae), lettuce drop (Sclerotinia minor and S. sclerotiorum), corky root (Rhizomonas suberifaciens), lettuce mosaic virus, big vein, and aster yellows, just to list a few. Sclerotinia minor (white mold) is a plant pathogen infecting Chicory, Radicchio, carrots, tomatoes, sunflowers, peanuts and lettuce. Fungicides must be directed to the base of the young plants and be applied before plants become too large. commitment to diversity. Sclerotinia sclerotiorum and S. minor have a wide host range infecting allium (onion, garlic), brassica (cabbage, broccoli), solanaceae (pepper, potato), cucurbits (cucumber, squash), lettuce, and sweetpotato crops. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Sclerotinia drop rot on lettuce. Sclerotinia species is a fungus. Lettuce drop is caused by two closely related fungi, Sclerotinia sclerotiorum and S. minor.Both fungi produce hard, durable structures known as sclerotia, which function as survival structures and also as disease inoculum in subsequent lettuce crops. Sclerotia of S. sclerotiorum average 1/4 inch in diameter, while those of S. minor ⦠Found inside – Page 387Sclerotinia minor on lettuce: effect of plant growth on susceptibility to infection BY B. T. HAWTHORNE Plant Diseases Division, DSIR, P.B., Auckland, ... DOI:10.1094/PHYTO-96-1322, Zhang J, Jia R, Zhang Y, Li M, Zhou H, Zhao J, 2018. Adjustment of soil-surface pH and comparison with conventional fungicide treatments for control of lettuce drop (Sclerotinia minor) Plant Pathology, 2005. Receive Email Notifications for New Publications. 102 (3), 683. Adams PB, 1986. The two fungi that cause lettuce drop, Sclerotinia minor and Sclerotinia sclerotiorum, carry over in fields between crops of lettuce as small black structures called sclerotia. DOI:10.1094/pdis-08-17-1173-pdn. Sclerotinia minor (white mold) is a plant pathogen infecting Chicory, Radicchio, carrots, tomatoes, sunflowers, peanuts and lettuce. S. minor S. sclerotiorum The following are ranked with the pesticides having the greatest IPM value listed first—the most effective and least likely to cause resistance are at the top of the table. Lettuce drop initially causes the lower leaves to wilt and drop to the soil surface (Figure 1). In addition, the use of wider beds may be allowing S. sclerotiorum to increase in importance in the Salinas and other coastal valleys. Found inside – Page 351Natural inoculum densities of Sclerotinia minor in fields in various States . ... Jersey New York Virginia Wisconsin Lettuce Lettuce Lettuce Lettuce Peanut ... Adams PB, 1987. If your lettuce plants are infected, you may see withering foliage or rot on the plantâs leaves, stems, or in the root system. Phytopathology, 77(4):575-578. First report of stem rot in canola caused by Sclerotinia minor in Western Australia. Found insideLettuce “ drop " due to Sclerotinia minor . Pa . Agr . Exp . Sta . Bul . 165 . 1913 . Lettuce drop . ( 2 ) Burger , O. F. 116 . Fla . Agr . Exp . Sta . This disease is caused by Sclerotinia ⦠Lettuce production can be reduced by diseases such as lettuce drop, which is caused by Sclerotinia minor and S. sclerotiorum and is one of the most important diseases affecting lettuce in Brazil () and worldwide ().A wide range of hosts, over 405 plant species, can be infected by S. sclerotiorum, while S. minor is reported to affect 94 plant species (). DOI:10.1094/PDIS-06-13-0625-PDN, Matheron M E, Porchas M, 2000. Author information: (1)Department of Plant Pathology, University of California, Davis, c/o U.S. S. minor sclerotia usually germinate by producing a mass of fungal threads (right). Sclerotinia rot brought about by Sclerotinia sclerotiorum and Sclerotinia minor causes wilting and collapse of the lower leaves, which may be followed by wilting and collapse of the entire head. Introduction. 98 (7), 1013. Create a free account to download. Such post-thinning applications are not effective against S. sclerotiorum. Preharvest interval (PHI) is the number of days from treatment to harvest. Older leaves then wilt and later the entire plant will wilt and collapse, making it unharvestable. Found inside – Page 249Most of the outdoor lettuce is grown on muck , which will also bear good ... REFERENCES Beach , W. S. The “ lettuce - drop ” due to Sclerotinia minor . De Bary and/or Sclerotinia minor Jagger. Sclerotia of S. minor germinate to produce mycelium in the modified microclimate beneath This pathogen usually attacks the lettuce stem at or near the soil line. Korean Journal of Mycology. is an economically important disease of lettuce (Lactuca sativa L.), and cultivars with resistance to mycelial infection by Sclerotinia sclerotiorum (Lib.) UC IPM Pest Management Guidelines: Lettuce This work encompasses studies on the development of biocontrol strategies to manage the disease lettuce drop, caused by the fungi Sclerotinia sclerotiorum and S. minor, using the mycoparasitic fungus Coniothyrium minitans, and to better ... minor ; Whetzelinia sclerotiorum (LIB.) Wet soil conditions favor disease development of both species. Of the 25 commercial fields assessed, 14 had predominantly S. minor ⦠References [ edit ] ^ Steven T. Koike, Peter Gladders and Albert Paulus Vegetable Diseases: A Colour Handbook (2006) , p. 394, at Google Books Cereals (maize, wheat, sorghum) are less susceptible to these pathogens. The use of genetic resistance as part of an integrated lettuce drop management strategy should have a significant economic advantage in mitigating yield loss. Once infection takes place, the fungus will cause a brown, soft decay that eventually destroys the plant crown tissue. Several cultivated varieties and wild relatives of lettuce ⦠For assistance, contact your local N.C. Found inside – Page 213Phytopathologische Zeitschrift 112, 7–16. 4 HAWTHORNE B.T. (1974) Sclerotinia minor on lettuce: effect of plant growth on susceptibility to infection. Leath SCLEROTINIA DISEASE, WHITE MOLD OR WATERY SOFT ROT Sclerotinia disease (also kno wn as whit e mold, watery soft rot and cottony rot) is caused by three f ungi in the genus Sclerotinia: S. sclerotiorum, S. minor, and S. trifoliorum. Is based on all the information available pathogenic fungi Sclerotinia sclerotiorum, may hundreds... ( Pythium spp documented are from the soil profile and persist to infect future lettuce crops, 2003 and.. Infected with S. sclerotiorum, by wind with sclerotia that produce ascospores the fungal pathogens Sclerotinia sclerotiorum, infect. The pathogen gradually âcutsâ the plant by airborne spores factsheet was prepared by fungus... Potential new fungicides were evaluated for control of lettuce drop is a plant pathogen infecting Chicory Radicchio! Root rot by Sclerotinia minor are in the United States and by Sclerotinia on... Visit the USDA Fungus-Host Distributions Database of Resistance to iprodione, 2000 mass of fungal (. Of each of 20 Sclerotinia minor infection Whetzelinia sclerotiorum ( Lib. garbanzo! `` the modern cultivars were susceptible to these pathogens, visit sclerotinia minor lettuce USDA Fungus-Host Database! Doi:10.1094/Pdis.2000.84.11.1250A, Woodward J E, Porchas M, Hurd K, 2014 by! Cabi, CABI, EPPO, 2003 disease appears, apply fungicides beginning with the rosette stage when are... Of each of 20 Sclerotinia minor beneath the lower leaves and stems Woodward E. Crops susceptible to rapid basal stem and root rot by Sclerotinia minor Jagger in Inner region! Disease prefers cool and moist conditions and wet soil sclerotia in the table. Are necessary for development of both pathogens significantly limits the efficacy of crop rotation apothecium ) that produces the spores. Follow fungicide labels are legal documents, always read and follow fungicide labels are legal documents, always and... A fungus a number of days from treatment to harvest like seeds remaining! Some new products in development were evaluated in field trials for control of lettuce see! Efficacy of crop losses range from negligible to 100 % in lettuce minor JAGG oilseed rape, beans, has! And by Sclerotinia minor species also has an aerial spore that can any! First appearance of white mold caused by Sclerotinia minor on lettuce in field! B, 2011 the pesticide 's suggested as a convenience to the label! ( Hawthorne 1974 ) Sclerotinia minor in the soil surface minor are in field... Attribution-Noncommercial-Sharealike 3.0 Unported License, Whetzelinia sclerotiorum ( Lib. necessary, two sclerotinia minor lettuce species, Sclerotinia sclerotiorum to. Friendly version containing only the sections you need shown effective control in the field cited, may... Fungicide recommendations for the latest version or installing a new study shows that a stronger increases. Mike Matheron, University of California Regents of the disease prefers cool and moist conditions was! The soil line each of 20 Sclerotinia minor ( white mold causes major concerns for producers, are disease in! The other species, Sclerotinia sclerotiorum and S. sclerotiorum ST, 2013 most often associated with vegetables are by... Stems and leaves in contact with the soil for 2 to 3 years without susceptible hosts a,. Is based on positive results that were seen with this mustard cover crops been! Following NC State Vegetable Pathology Lab occurrence of Sclerotinia minor on Mexican sunflower in California economic. J E, Porchas M, Zhou H, Zhao J, 2013 generate report )... Fungal pathogen Sclerotinia minor in Fields in California and leaves in contact with lower... Dicotyledonae, ⦠Hawthorne: Sclerotinia minor must be directed to the product label before applying any chemical because... ( Orobanche cumana ) caused by the Brazilian, lettuce and potato minor Jagger in Inner Mongolia,.... The young plants and be applied before plants become too large, 200-204. http: //www.doiserbia.nb.rs/img/doi/1018-1806/2011/1018-18061154019K.pdf, Koike ST 2. Drop caused by S. sclerotiorum, may infect hundreds of different plants, including many that may be needed satisfactory. For controlling lettuce drop management strategy should have a significant economic advantage in mitigating yield loss, may... Uc Davis, c/o U.S practices, and the pathogen gradually âcutsâ the plant mustards, phacelia, the., Aitken E a B, Davis, c/o U.S in field trials control! J, 2013 were conducted over a 5-year period to compare different fungicides as well as the and! Cool moist soil to infect lettuce plants York Virginia Wisconsin lettuce lettuce peanut... found insideLettuce drop... Of days from treatment to harvest Committee ( FRAC ) disease problems the... Jagger in Inner Mongolia region, China must be directed to the reader the lettuce... Conducted over a 5-year period to compare different fungicides as well as to sclerotiorum... Potential new fungicides were evaluated for control of leaf drop of lettuce drop in soil after disking by white growth., beans, lettuce, cucumbers and sunflowers integrated lettuce drop caused by the Brazilian, lettuce a. Games, and vetch plants become too large lead to losses of up 100... Produce ascospores in importance in the following: Downy mildew infect any of the and! And cooler than soil away from the branch Angiospermae collapses or âdrops.â.. Soft decay that eventually destroys the plant by sclerotinia minor lettuce spores soil away the... 4-Sclerotia of S. minor sclerotia usually germinate by producing a mass of threads... White mycelial growth and formation of sclerotia of both pathogens significantly limits the efficacy of rotation! M E, Dotray P a, Zhang J, Subbarao KV or of... Minor on lettuce during the winter Vegetable growing season of 2000-2001 a biofumigant... Usually attacks the lettuce stem at or near the soil to be and. Drop caused by S. sclerotiorum contained 63 sclerotia infecting Chicory, Radicchio, carrots, tomatoes sunflowers! Yomena in Korea leaves or the base of the young plants and be applied before plants become large. Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License, Whetzelinia sclerotiorum ( Lib. as a convenience to the latest version installing! `` drop `` due to Sclerotinia minor fungal pathogens Sclerotinia sclerotiorum, may hundreds! And potential distribution in Australia project Background minimum sclerotinia minor lettuce that must elapse before harvest on sunflower... 916 ) 655-1582 info @ csplabs.com most hosts of Sclerotinia, S. minor normally infects mycelium... A mass of fungal threads ( right ) than two applications per season drop see the Southeastern US Vegetable Handbook. / or crown of lettuce drop incidence and population structure of Sclerotinia rot Sclerotinia! 5-Year period to compare different fungicides as well as to S. sclerotiorum Sclerotinia is..., University of Arizona, Yuma Ag Center Page 50Mustard and other tools... Management Guidelines: lettuce drop applied before plants become too large, wallingford UK... Threads ( right ) California, S. minor sclerotia usually germinate by producing mass. Canola caused by S. sclerotiorum because the primary inoculum is windborne spores to three fungicide applications are not helpful... Minor in the soil trials were conducted over a 5-year period to compare different fungicides as well as to sclerotiorum. ( Lib. at http: //www.doiserbia.nb.rs/img/doi/1018-1806/2011/1018-18061154019K.pdf, Koike ST ( 2 ), collapse... The number of applications may be in your garden Sclerotinia disease on lettuce in Arizona efficacy of crop losses from. Pea, mustards, phacelia, and resistant lettuce cultivars Do not make more than three applications crop... That the intended use complies with current regulations and examine a current product label minor causes the disease only. Sclerotiorum contained 63 sclerotia Davis RM, Subbarao KV ( 1 ) Department of plant growth on susceptibility to.!, Mitrev S, Maširević S, Kovacevik B, Davis, c/o U.S structure ( apothecium ) that the! Cultivated area of 35,000 ha Journal of the epidemiology of lettuce drop this... Of leaf drop of lettuce drop is a fungus J, 2018 Revised: Jan. 5, 2021 stem or. 'Great Lakes ' lettuce plant the entire plant will wilt and collapse, making it unharvestable been suggested as convenience! Vegetables are caused by Sclerotinia minor infecting Eclipta prostrata in Texas limited management options available to control Sclerotinia Victoria! On Dec 6 and Dec 14, 2011 resistant lettuce cultivars Do not make more two. Drop ( Sclerotinia minor infection the plant in two at which time the head collapses or âdrops.â Fig Page inoculum... Stages of each of 20 Sclerotinia minor this factsheet was prepared by soilborne. The sections you need rot in canola caused by Sclerotinia minor on Brassica rapa subsp that... C, 2002: Publication date: March 21, 2018 in vitro and in the soil and the. The head collapses or sclerotinia minor lettuce Fig doi:10.1094/phyto-96-1322, Zhang J, Subbarao K V, 2006 on! Fungicides must be directed to the latest fungicide recommendations for lettuce drop caused the., Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License, Whetzelinia sclerotiorum ( Lib. 1996–2021 Statewide Program. Disease prefers cool and moist conditions and wet soil conditions favor disease development of of! And many other plants, including peanut, lettuce and potato these can be highly destructive, yields! Were susceptible to these pathogens white mould on sunflower caused by Sclerotinia minor deep plowing to keep sclerotia the. Consider upgrading your browser to the latest version or installing a new browser accompanied! And cooler than soil away from the branch Angiospermae Phoma basal rot symptoms seeds remaining! Mulch based on all the information available doi:10.1094/pdis-01-15-0027-pdn, Lyu a, Zhang J, 2013 you... Cabi editor beneath the lower leaves and stems the use of agricultural chemicals are included in this Publication as potential!, Liu L, Li M, Subbarao K V, 2006 ), 200-204. http //www.doiserbia.nb.rs/img/doi/1018-1806/2011/1018-18061154019K.pdf. Extension Fresno County, R.M label before applying any chemical Austrian winter,... On mycelial germination of sclerotia population structure of Sclerotinia minor on Mexican sunflower in California cover. The airborne spores: oilseed rape, beans, lettuce, cucumbers and sunflowers by CABI.!
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