Vivaldi is a midseason June bearer with shiny bright-red berries, ﬁrm ﬂesh and excellent shelf life. The variety bears attractive fruits which taste good and do not bruise easily. Due to its long shelf life, the variety is suited to shipping long distances, making it a good alternative to Sonata in normal and frigo cultures. Vivaldi is also an interesting variety for programmed summer production with waiting bed plants and greenhouse production.
Flowering and picking period Flower quality of Vivaldi is good. The ﬂowers are of medium size and produce sufﬁcient amounts of pollen giving rise to a low percentage of misshapen fruits. Many composite ﬂower trusses tend to develop simultaneously which can result in smaller berries and a shorter more intensive picking period. Flower trusses are normally positioned below the leaf canopy. When cultivated under glass, the ﬂower trusses must be sufﬁciently spread out. The harvest period of Vivaldi is compared to Sonata on average 2 days earlier.
Fruit quality Vivaldi produces attractive, medium to short conical bright shiny fruits which are juicy and have a pleasant taste. Berries generated by Vivaldi are slightly smaller than those of Sonata. Berry texture is clearly different due to its notable ﬁrmness. Berries of this variety are uniform in shape and seeds are superﬁcially located as opposed to deeply embedded. Bruising is not typical of this variety and if present not easily visible. Shelf life is considered excellent. At high temperatures, fruits may become dark. The fruit of Vivaldi is mildly resistant to mildew.
Productivity The yield and fruit size of Vivaldi is almost as good as that of Sonata. Fruits are typically easy to pick comparable to Sonata. Growers should aim for cultural practices that lead to a slow uniform ﬂower differentiation which will result in an extended ﬂowering period and sub sequent increase in average fruit size.
Pest and disease susceptibility Vivaldi produces a vigorous erect plant that can become susceptible to powdery mildew (Sphaeroteca macularis) towards the end of harvest, however to date mildew has not been observed on the fruits themselves, yet. Vivaldi is moderately resistant to crown rot (P. cactorum) as well as to fruit rot (B. cinerea). The vulnerability to verticillium wilt (V. dahliae), angular leaf spot (Xanthomonas fragariae) and antracnose (Colletotrichum acutatum) is not known yet because these diseases have not been observed up to now.
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