Investigations of Beet Leafhopper (Eutettix Tenella Baker) in Salinas Valley of California

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The multiplication of the beet leafhopper (Eutettix Tenella Baker) in the Salinas Valley occurs chiefly on sugar beets. The nymphs were bred from eggs deposited in seventeen weeds growing in the cultivated areas. There was no evidence to show that a migration occurs from the San Joaquin into the Salinas Valley through the Coalinga-King City mountain pass. During the autumn dispersal the overwintering adults fly to the foothills, following the Salinas River and its tributaries.

Early planting of sugar beets (December to February) is the only known practical method of preventing losses from curly leaf in localities outside of the fog belt. In the fog belt districts late planted beets make a better tonnage than early plantings, in a normal season of rainfall. Planting should be discontinued from March 1, until after the spring dispersal. The limit of beet growing in the fog belt as far as: curly leaf is concerned varies from 20 to 30 miles in California.

Document Type: Research Article

Publication date: December 1, 1923

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