Evaluation of a Wing-Type Against a Bucket-Type Fruit Fly Trap for Use in Table Grape Vineyards

  • A. Schwartz Nietvoorbij Institut~ for Viticulture and Oenology (Nietvoorbij). Private Bag X5026, 7599 Stellenbosch, Republic of South Africa
  • D. Capatos Biometric Services, Winter Rainfall Region, Private Bag, 7607 Elsenburg, Republic of South Africa
DOI: https://doi.org/10.21548/15-1-2278

Abstract

The standard fruit fly trap (wing-type) was evaluated against a new (bucket-type) trap ou table grapes. From an initial value of 47,7%, relative effectiveness, the standard trap showed a sharp decline during the second to fourth week and reached zero within a period of eight weeks. Both the linear and quadratic terms of the regression curve of relative effectiveness against time were statistically significant. It is suggested that the standard type of trap be replaced by the new bucket-type fruit fly trap.

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Published
2017-05-05
Issue
Vol. 15 No. 1 (1994)
Section
Articles

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