Articles
PLANT PROTECTION IN CURRANT PRODUCTION IN FINLAND
Article number
777_50
Pages
333 – 338
Language
English
Abstract
In Finland, currants are grown in 2500 ha.
Organic growing has increased and covers 15% of the area.
Plant protection problems have increased as a consequence of reduced inputs in pest management due to low market price of berries and lack of non-chemical control methods in organic growing.
Effective acaricides against black currant gall mites (Cecidophyopsis ribis and C. spicata) and a free-living gall mite (Anthocoptes ribis) are not available.
Healthy mother plant stocks accomplished by hot water treatment and strict hygiene are essential to guarantee freedom from gall mites when plants leave the nursery.
In production fields, enhancement of endemic predatory mites may help especially control of free living gall mites in organic fields.
Introduction of foreign predatory mite species was not successful.
Several moth species, currant shoot borer (Lampronia capitella), currant bud moth (Euhyponomeutoides albithoracellus) and currant clearwing moth (Synanthedon tipuliformis) cause economic losses not only by direct larval injury but also indirectly by disturbing the development of bush structure.
Pheromones and attractant odours have been studied in field work both for monitoring and control purposes, and a modified confusion method appeared to be a promising tool for currant bud moth control.
Other pests deserving attention include gall midges (Resseliella ribis, Dasineura tetensi) and aphids (e.g., Aphis schneideri, Aphis grossulariae, Cryptomyzus ribis). The most important diseases are anthracnose (Drepanopeziza ribis) on red and white currant and leaf spot (Septoria ribis) on all species.
Anthracnose has only sporadically been detected on black currant because the main cultivar used in Finland, Öjebyn, is quite resistant.
Powdery mildew (Sphaerotheca mors-uvae) has severely attacked white currant during recent years.
Fungal diseases have been controlled by treatments before and after flowering.
Control of powdery mildew has been particularly problematic. Black currant reversion virus (BRV) is controlled by use of healthy, virus-free planting material
Organic growing has increased and covers 15% of the area.
Plant protection problems have increased as a consequence of reduced inputs in pest management due to low market price of berries and lack of non-chemical control methods in organic growing.
Effective acaricides against black currant gall mites (Cecidophyopsis ribis and C. spicata) and a free-living gall mite (Anthocoptes ribis) are not available.
Healthy mother plant stocks accomplished by hot water treatment and strict hygiene are essential to guarantee freedom from gall mites when plants leave the nursery.
In production fields, enhancement of endemic predatory mites may help especially control of free living gall mites in organic fields.
Introduction of foreign predatory mite species was not successful.
Several moth species, currant shoot borer (Lampronia capitella), currant bud moth (Euhyponomeutoides albithoracellus) and currant clearwing moth (Synanthedon tipuliformis) cause economic losses not only by direct larval injury but also indirectly by disturbing the development of bush structure.
Pheromones and attractant odours have been studied in field work both for monitoring and control purposes, and a modified confusion method appeared to be a promising tool for currant bud moth control.
Other pests deserving attention include gall midges (Resseliella ribis, Dasineura tetensi) and aphids (e.g., Aphis schneideri, Aphis grossulariae, Cryptomyzus ribis). The most important diseases are anthracnose (Drepanopeziza ribis) on red and white currant and leaf spot (Septoria ribis) on all species.
Anthracnose has only sporadically been detected on black currant because the main cultivar used in Finland, Öjebyn, is quite resistant.
Powdery mildew (Sphaerotheca mors-uvae) has severely attacked white currant during recent years.
Fungal diseases have been controlled by treatments before and after flowering.
Control of powdery mildew has been particularly problematic. Black currant reversion virus (BRV) is controlled by use of healthy, virus-free planting material
Publication
Authors
T. Tuovinen, P. Parikka, A. Lemmetty
Keywords
pests, biological control, pheromones, diseases, chemical control
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