University of California

Yellows disease of celery, lettuce, and other plants, transmitted by Cicadula sexnotata (Fall.)


Henry H. P. Severin

Author Affiliations

Henry H. P. Severin was Assistant Entomologist in Experiment Station.

Publication Information

Hilgardia 3(18):543-583. DOI:10.3733/hilg.v03n18p543. February 1929.

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Celery affected with yellows was first observed in the San Joaquin delta in 1925 during an investigation of economic plants naturally infected with curly top. During 1926 and 1927 an average of 5 per cent of the crop was affected in the delta, the most important celery producing region in California; in 1928 about 10 per cent of the celery showed symptoms of the disease. Some celery growers hoe out the diseased celery so that an exact percentage of yellows could not be obtained in some fields.

During 1927, 7,000 acres of celery, valued at $3,096,310, were grown in the San Joaquin delta so that the loss due to yellows amounted to $154,815. During 1928, 7,400 acres of celery are being grown in the delta, but the value of the crop has not been estimated; the loss due to this disease will probably exceed $300,000.

Lettuce yellows, known as white-heart or rabbit-ear in New York, and Rio Grande disease in Texas, is a rather serious malady of lettuce. Lettuce yellows is of no economic importance at present in California, but its nature is such as to demand field observations year after year to determine its potential importance.

Literature Cited

[1] Carsner E. Susceptibility of various plants to curly top of sugar beet. Phytopathology. 1919. 9:413-421.

[2] Ellinger T. Cicadula sexnotata, a hemipteron injurious to wheat, oats and barley, in Sweden (review.). Internatl. Inst. Agr. Bur. Agr. Intell. and Plant Diseases Mo. Bull. 1918. 9:1383

[3] Junger J. R. Cicadula sexnotata and its control (Abstr.). Exp. Sta. Rec. 1906. 18:354

[4] Kunkel L. O. Studies on aster yellows. Amer. Jour Bot. 1926. 13:646-705. DOI: 10.2307/2435474 [CrossRef]

[5] Kunkel L. O. Further studies on the host range of aster yellows. Phytopathology. 1928. 18:156

[6] Linford M. B. Plant diseases in Utah. The Plant Disease Reporter Supplement. 1928. 59:65-117. Issued by the office of mycology and disease survey. U. S. Dept. Agr. Bur. Plant Indus

[7] Osborn H. Leafhoppers affecting cereals, grasses, and forage crops. U. S. Dept. Agr. Bur. Ent. Bul. 1912. 108:1-123.

[8] Osborn H. Leafhoppers of Maine. Maine Agr. Exp. Sta. Bul. 1915. 238:81-160.

[9] Osborn H. Life histories of leafhoppers of Maine. Maine Agr. Exp. Sta. Bul. 1916. 248:53-80.

[10] Uzeol H. On leafhoppers that injure the sugar beet in Bohemia (abstr 1911. Exp. Sta. Rec. 25:257

[11] Smith R. E. Growing China asters. Hatch Exp. Sta., Massachusetts Agr. Coll. Bul. 1902. 79:1-26.

Severin H. 1929. Yellows disease of celery, lettuce, and other plants, transmitted by Cicadula sexnotata (Fall.). Hilgardia 3(18):543-583. DOI:10.3733/hilg.v03n18p543
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