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You searched for: Journal Plant disease Remove constraint Journal: Plant disease Publication Year 1999 Remove constraint Publication Year: 1999 Source 1999 v.83 no.9 Remove constraint Source: 1999 v.83 no.9
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1. An immunity (QL3) breaking strain of sorghum mosaic potyvirus in India

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

2. Application of organic and inorganic salts to field-grown potato tubers can suppress silver scurf during potato storage

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

3. Association of Phialophora gregata with Fusarium solani f. sp. pisi in garbanzo beans in California

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

4. Biological suppression of seedborne Fusarium spp. during cold stratification of Douglas fir seeds

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

5. Biology and management of typhula snow molds of turfgrass

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

6. Components of resistance to Rhizoctonia solani associated with two tall fescue cultivars

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

7. Coriander: a new natural host of groundnut ring spot virus in Brazil

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

8. Differences in aggressiveness of Sphaeropsis sapinea RAPD marker group isolates on several conifers

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

9. Evaluation of methods to detect fruit infected by Monilinia vaccinii-corymbosi in mechanically harvested rabbiteye blueberry

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

10. Evaluation of tactics for managing resistance of Venturia inaequalis to sterol demethylation inhibitors

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

11. Fate of Pierce's disease strains of Xylella fastidiosa in common riparian plants in California

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

12. First occurrence of white rust of Arugula, caused by Albugo candida

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

13. First record of Bursaphelenchus nematodes from pine forests in Greece

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

14. First report of Alternaria tenuissima as a leaf pathogen of Amaranthus hybridus

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

15. First report of bacterial leaf spot of basil caused by Pseudomonas viridiflava in Argentina

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

16. First report of Ceratocystis fimbriata infecting balsam poplar (Populus balsamifera)

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

17. First report of East African cassava mosaic begomovirus in Ghana

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

18. First report of golden dwarf mistletoe on Pinus maximinoi

Author:
Sesnie, S.; Calderon, J.; Soto, A.
Source:
Plant disease 1999 v.83 no.9 pp. 878
ISSN:
0191-2917
Subject:
new host records; geographical distribution; altitude; parasitism; Guatemala
DOI:
10.1094/PDIS.1999.83.9.878D

19. First report of powdery mildew caused by an Oidium sp. on Torenia fournieri

Author:
Holcomb, G.E.
Source:
Plant disease 1999 v.83 no.9 pp. 878
ISSN:
0191-2917
Subject:
Torenia fournieri; Oidium; new host records; cultivars; conidia; hyphae; fungal diseases of plants
DOI:
10.1094/PDIS.1999.83.9.878B

20. First report of Pythium paroecandrum on Lupinus havardii

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