Effects of damage to individual leaves on shoot growth and berry production of black currant

Abstract

The importance of individual leaves on shoot growth and flower and berry production of black Currant (cv. Ojebyn) was studied in northern Sweden. One or three leaves were artificially removed from the shoot tips of dominant terminal shoots, simulating attack by larvae of the black currant leaf midge Dasineura tetensi (Diptera: Cecidomyiidae). Removal of one or three leaves significantly reduced the shoot length at the end of the season by about 1.5 and 3.5 cm, respectively, while the production of new leaves was not affected. At the shoot-level, leaf removal had no effect on the number of floral buds, flowers or berries produced by shoots the year after treatment. At the bud-level, buds produced in the axils of removed leaves produced about one flower less than buds from axils of remaining leaves, irrespective of whether a single or three adjacent leaves were removed. The pattern at bud-level was about the same when the shoots were naturally infested by D. tetensi. (C) 2004 Elsevier Ltd. All rights reserved

Keywords

Ribes nigrum; crop loss assessment; Dasineura tetensi; compensatory growth

Published in

Crop Protection
2005, Volume: 24, number: 4, pages: 343-348 Publisher: ELSEVIER SCI LTD

SLU Authors

• Hellqvist, Sven

  • Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Horticulture


Publication identifier

DOI: https://doi.org/10.1016/j.cropro.2004.08.009

Permanent link to this page (URI)

https://res.slu.se/id/publ/5550