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- Author:
- Mali, V.R.
- Source:
- Plant disease 1999 v.83 no.9 pp. 877
- ISSN:
- 0191-2917
- Subject:
- infection; Sorghum bicolor; disease resistance; Potyvirus; genetic resistance; cultivars; host range; Saccharum officinarum; disease transmission; pathogenicity; Rhopalosiphum maidis; India
- DOI:
- 10.1094/PDIS.1999.83.9.877B
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.877B
- Author:
- Olivier, C.; MacNeil, C.R.; Loria, R.
- Source:
- Plant disease 1999 v.83 no.9 pp. 814-818
- ISSN:
- 0191-2917
- Subject:
- potatoes; Helminthosporium solani; sporulation; sodium bicarbonate; sodium carbonate; potassium sorbate; calcium propionate; calcium chloride; ammonium bicarbonate; postharvest treatment; storage; postharvest diseases
- Abstract:
- ... Silver scurf, caused by Helminthosporium solani, is an economically important postharvest disease of potato tubers. Organic and inorganic salts were evaluated for their ability to suppress silver scurf lesion development and sporulation of H. solani on potato tubers. Tubers were treated immediately after harvest with 0.2-M solutions of potassium sorbate, calcium propionate, sodium bicarbonate, sod ...
- DOI:
- 10.1094/PDIS.1999.83.9.814
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.814
- Author:
- Smith, S.N.
- Source:
- Plant disease 1999 v.83 no.9 pp. 876
- ISSN:
- 0191-2917
- Subject:
- Cadophora gregata; plant diseases and disorders; host plants; mixed infection; pathogenicity; Fusarium solani f. sp. pisi; synergism; plant vascular system; Pisum sativum; Cicer arietinum; crop rotation; mortality; new geographic records; California
- DOI:
- 10.1094/PDIS.1999.83.9.876A
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.876A
- Author:
- Hoefnagels, M.H.; Linderman, R.G.
- Source:
- Plant disease 1999 v.83 no.9 pp. 845-852
- ISSN:
- 0191-2917
- Subject:
- imbibition; seeds; biological control agents; ambient temperature; Pseudomonas chlororaphis; seed pathology; pathogenicity; species diversity; Pseudotsuga menziesii; seed treatment; culture media; biological control; Fusarium
- Abstract:
- ... Fusarium spp. are important soil- and seedborne pathogens of Douglas fir (Pseudotsuga menziesii) in conifer seedling nurseries. We investigated the effects of culture media and cold stratification on isolation of Fusarium spp. from three Douglas fir seedlots and tested whether the numbers and species mixtures found on stratified seeds could cause disease. Nearly all cold-stratified seeds plated on ...
- DOI:
- 10.1094/PDIS.1999.83.9.845
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.845
- Author:
- Hsiang, T.; Matsumoto, N.; Millett, S.M.
- Source:
- Plant disease 1999 v.83 no.9 pp. 788-798
- ISSN:
- 0191-2917
- Subject:
- grasses; overwintering; fungal anatomy; Typhula; fungicides; ambient temperature; snow molds; snow; dormancy; detection; disease diagnosis
- DOI:
- 10.1094/PDIS.1999.83.9.788
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.788
- Author:
- Green, D.E. II; Burpee, L.L.; Stevenson, K.L.
- Source:
- Plant disease 1999 v.83 no.9 pp. 834-838
- ISSN:
- 0191-2917
- Subject:
- cultivars; Festuca arundinacea; blight; genetic resistance; area; fungal diseases of plants; Thanatephorus cucumeris; leaf area; disease resistance; length; width; disease course
- Abstract:
- ... Components of resistance to Rhizoctonia solani in the tall fescue cultivars Kentucky 31 (moderately resistant) and Mojave (susceptible) were evaluated under controlled environmental conditions. Size and expansion rate of foliar lesions were recorded on 100 individual plants of each cultivar. Lesions on the first fully expanded leaves of 6- to 10-month-old inoculated plants covered a significantly ...
- DOI:
- 10.1094/PDIS.1999.83.9.834
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.834
- Author:
- Lima, M.F.; Avila, A.C. de.; Wanderley, L.J. da G. Jr.; Nagata, T.; Gama, L.J.W. da.
- Source:
- Plant disease 1999 v.83 no.9 pp. 878
- ISSN:
- 0191-2917
- Subject:
- Coriandrum sativum; host range; plant viruses; serodiagnosis; leaves; plant extracts; new geographic records; pathogenicity; enzyme-linked immunosorbent assay; Brazil
- DOI:
- 10.1094/PDIS.1999.83.9.878C
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.878C
- Author:
- Blodgett, J.T.; Stanosz, G.R.
- Source:
- Plant disease 1999 v.83 no.9 pp. 853-856
- ISSN:
- 0191-2917
- Subject:
- host range; random amplified polymorphic DNA technique; disease course; Pinaceae; seedlings; necrosis; strain differences; host plants; fungal diseases of plants; conifer needles; Sphaeropsis; virulence; genetic markers
- Abstract:
- ... Seedlings of Scot's pine varieties East Anglia and Austrian Hills, red pine, mugho pine variety Pumileo, Colorado blue spruce, Douglas-fir, and balsam fir were wounded and inoculated with water agar plugs colonized by isolates of the two random amplified polymorphic DNA (RAPD) marker groups (A and B) of Sphaeropsis sapinea. Isolates were obtained from hosts in Michigan, Minnesota, and Wisconsin. S ...
- DOI:
- 10.1094/PDIS.1999.83.9.853
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.853
- Author:
- Scherm, H.; Copes, W.E.
- Source:
- Plant disease 1999 v.83 no.9 pp. 799-805
- ISSN:
- 0191-2917
- Subject:
- postharvest diseases; blueberries; food processing; Monilinia vaccinii-corymbosi; mechanical harvesting; detection; infection; nondestructive methods
- Abstract:
- ... Blueberry fruit infected by Monilinia vaccinii-corymbosi (causal agent of mummy berry disease) are unfit for processing because of the formation of hardened structures (pseudosclerotia) within them. In commercial packinghouses in Georgia, fruit loads exceeding the tolerance level for mummy berry are appraised at lower quality grades, resulting in severe economic penalties to producers. Two methods ...
- DOI:
- 10.1094/PDIS.1999.83.9.799
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.799
- Author:
- Koller, W.; Wilcox, W.F.
- Source:
- Plant disease 1999 v.83 no.9 pp. 857-863
- ISSN:
- 0191-2917
- Subject:
- Venturia inaequalis; Malus domestica; fenarimol; dodine; fungicide resistance; mancozeb; genetic resistance; myclobutanil; application rate; artificial selection; New York
- Abstract:
- ... The impact on the selection and control of subpopulations of V. inaequalis resistant to the sterol demethylation inhibitor (DMI) fenarimol or to dodine were evaluated with respect to several tactics of apple scab control. Experiments were conducted in an experimental orchard with elevated levels of DMI and dodine resistance over a period of three consecutive seasons. The DMI-resistant subpopulatio ...
- DOI:
- 10.1094/PDIS.1999.83.9.857
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.857
- Author:
- Purcell, A.H.; Saunders, S.R.
- Source:
- Plant disease 1999 v.83 no.9 pp. 825-830
- ISSN:
- 0191-2917
- Subject:
- riparian buffers; plant diseases and disorders; Xylella fastidiosa; disease resistance; population; mortality; California
- Abstract:
- ... The fate of strains of the bacterium Xylella fastidiosa that cause Pierce's disease of grapevines was investigated in 33 species of mostly perennial plants common in riparian habitats in northern coastal California grape-growing regions. Plants were inoculated in the field with needle puncture using cultured cells of X. fastidiosa as inoculum or inoculated in the laboratory with infective insect v ...
- DOI:
- 10.1094/PDIS.1999.83.9.825
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.825
- Author:
- Scheck, H.J.; Koike, S.T.
- Source:
- Plant disease 1999 v.83 no.9 pp. 877
- ISSN:
- 0191-2917
- Subject:
- rust diseases; host range; Brassica rapa subsp. pekinensis; Eruca vesicaria; assays; host plants; Brassica juncea; new geographic records; pathogenicity; Albugo candida; fungal spores; Brassica oleracea var. botrytis; Brassica rapa subsp. oleifera; leaves; California
- DOI:
- 10.1094/PDIS.1999.83.9.877D
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.877D
- Author:
- Skarmoutsos, G.; Skarmoutsou, H.
- Source:
- Plant disease 1999 v.83 no.9 pp. 879
- ISSN:
- 0191-2917
- Subject:
- forest plantations; Pinus brutia; host range; interspecific variation; Pinus nigra; plant parasitic nematodes; surveys; Pinus halepensis; Pinus sylvestris; ecosystems; Bursaphelenchus; Pinus pinaster; new geographic records; Greece
- DOI:
- 10.1094/PDIS.1999.83.9.879D
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.879D
- Author:
- Blodgett, J.T.; Swart, W.J.; Chen, W.
- Source:
- Plant disease 1999 v.83 no.9 pp. 878
- ISSN:
- 0191-2917
- Subject:
- Alternaria tenuissima; conidia; fungal diseases of plants; new host records; pathogenicity; incidence; Amaranthus hybridus; South Africa
- DOI:
- 10.1094/PDIS.1999.83.9.878A
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.878A
- Author:
- Alippi, A.M.; Wolcan, S.; Bo, E. dal.
- Source:
- Plant disease 1999 v.83 no.9 pp. 876
- ISSN:
- 0191-2917
- Subject:
- disease diagnosis; Ocimum basilicum; Pseudomonas viridiflava; cotyledons; incidence; new geographic records; Lactuca sativa; Argentina
- DOI:
- 10.1094/PDIS.1999.83.9.876B
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.876B
- Author:
- Vujanovic, V.; St-Arnaud, M.; Charlebois, D.; Fortin, E.
- Source:
- Plant disease 1999 v.83 no.9 pp. 879
- ISSN:
- 0191-2917
- Subject:
- Populus balsamifera; new host records; pathogenicity; Ceratocystis fimbriata; petioles; branches; shoots; Quebec
- DOI:
- 10.1094/PDIS.1999.83.9.879A
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.879A
- Author:
- Offei, S.K.; Owuna-Kwakye, M.; Thottappilly, G.
- Source:
- Plant disease 1999 v.83 no.9 pp. 877
- ISSN:
- 0191-2917
- Subject:
- cultivars; new geographic records; enzyme-linked immunosorbent assay; leaves; Geminiviridae; Ghana
- DOI:
- 10.1094/PDIS.1999.83.9.877C
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.877C
- Author:
- Fernandez-Pavia, S.P.; Valenzuela-Vazquez, M.
- Source:
- Plant disease 1999 v.83 no.9 pp. 880
- ISSN:
- 0191-2917
- Subject:
- Lupinus; Pythium paroecandrum; new host records; air temperature; incidence; mortality; roots; stems; pathogenicity; oospores; mycelium; age; fungal diseases of plants; New Mexico
- DOI:
- 10.1094/PDIS.1999.83.9.880C
-
http://dx.doi.org/10.1094/PDIS.1999.83.9.880C