Articles
THE INFLUENCE OF INSECT POLLINATING ON FRUIT SETTING OF THREE BLACK CURRANT CULTIVARS OF (RIBES NIGRUM L.)
Article number
352_32
Pages
223 – 230
Language
Abstract
During the years of 1991–1992 the investigations were carried out the influence of pollinating insects on the yield of cultivars Fertodi-1, Titania, Triton and and an unknown genotype which was found mixed up in Titania (as Titania Z.). All the cultivars examined reacted to the lack of insect-pollinators with a reduced total yield from 1 ha by about 70–80% every year.
The reduction of yield which was caused not by the decrease of berry weight (on the average by 10 %), but by the smaller number in strigs amounting to 30 to 60 %, because the fruit from self-pollination dropped easily at time of ripening, especially of Titania Z. cultivar.
The highest crop of black currants from 1 ha in 1992 (the second year of fruiting) was produced by the bushes open to insects, i.e.
Titania cultivar almost 13 t, Titania Z. and Triton were about 9.5 t, and Fertodi 8.6 t.
The bushes isolated produced only 4.3 t (Titania), 2.5 t (Triton, Fertodi-1) and about 1 t (Titania Z.).
The reduction of yield which was caused not by the decrease of berry weight (on the average by 10 %), but by the smaller number in strigs amounting to 30 to 60 %, because the fruit from self-pollination dropped easily at time of ripening, especially of Titania Z. cultivar.
The highest crop of black currants from 1 ha in 1992 (the second year of fruiting) was produced by the bushes open to insects, i.e.
Titania cultivar almost 13 t, Titania Z. and Triton were about 9.5 t, and Fertodi 8.6 t.
The bushes isolated produced only 4.3 t (Titania), 2.5 t (Triton, Fertodi-1) and about 1 t (Titania Z.).
Publication
Authors
K. Szklanowska, B. Dabska
Keywords
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