• R. Kenneth Horst

NARCISSUS (Daffodil, Jonquil)

  • Bacterial Streak; Stem rot. Unidentified, WA.

  • Blight, Leaf; Fire. Sclerotinia (Botrytis) polyblastis, OR, WA; Botrytis cinerea; Botryotinia polyblastis, WA.

  • Leaf Scorch. Stagonospora curtisii, general, especially in East and South.

  • Leaf Spot, Blight; White Mold. Ramularia vallisumbrosae, OR, WA.

  • Nematode, Bulb. Aphelenchoides fragariae, FL, GA, NC, SC; A. subtenuis, Pacific Coast; Aphelenchus avenae, secondary.

  • Nematode, Bulb; Brown-ring Disease; Leaf “Spikkel”. Ditylenchus dipsaci, in all commercial narcissus areas.

  • Nematode, Lesion. Pratylenchus pratensis, OH, WA.

  • Rot, Basal. Fusarium oxysporum f. sp. narcissi, general on hardy varieties.

  • Rot, Black Bulb. Sclerotinia sclerotiorum; crown; wet scale, Sclerotium rolfsii, CA, FL, NY, VA.

  • Rot, Large Scale Speck. Stromatinia narcissi, general in northern bulb areas.

  • Rot, Leaf and Stem. Gloeosporium sp., LA, NC.

  • Rot, Neck; Smoulder. Sclerotinia narcissicola, NJ, NY, OR, VA, WA; probably general except on...


Powdery Mildew Leaf Spot Botrytis Cinerea Rhizoctonia Solani Alternaria Alternata 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • R. Kenneth Horst
    • 1
  1. 1.Plant Pathology and Plant Microbe BiologyCornell UniversityIthacaUSA

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