Agronomijas v stis - Latvijas Lauksaimniecības universitāte

Table 1. Specific composition and honeysuckle phytophage number (Institute of Fruit Growing,Minsk region, 2005 – 2008)Phytophage species, record unit 2005 2006 2007 2008Archips rosana , average larvae number per 2 m of 2.6 1.4 1.5 3.9branchesSpilonota ocellana, average number of larvae per 2 1.1 1.2 0.4 0.6m of branchesOperophthera brumata , average number of larvae 0.1 - 0.2 -per 2 m of branchesTotal number of leaf-eating butterflies 3.8 2.6 2.1 4.5Rhopalomyzus lonicerae, colonies per 100 leaves 8.9 6.6 7.3 6.8Tetranychus urticae,, average individuals number per 6.8 4.4 3.7 -leafParthеnolecanium corni corni , larvae number per 2m of branches- - 5.9 3.0Since 2006 research was started on the evaluation of the damageability by the dominantphytophages of honeysuckle cultivars regionalized in Belarus. The most spread cultivars:‘Lakomka’, ‘Goluboe vereteno’ and ‘Vasilievskaya’ were under study. As a result of three yearsrecords and observations it has been determined that a variety ‘Lakomka’ is damaged by a complexof phytophages to a lesser degree than the varieties ‘Vasilievskaya’ and ‘Goluboe vereteno’(Figure 1).Colonies,per 100 leaves1210864Caterpillars, per 2 mof branches1210864LakomkaGoluboe veretenoVasilievskaya2202006 2007 200802006 2007 2008Rhopalomyzus loniceraeArchips rosana12121010Larvae, per 2 mof branches864Individuals,per leaf864202007 2008Parthenolecanium corni corni202006 2007Tetranychus urticaeFigure 1. Regionalized edible honeysuckle cultivars colonization by main phytophages(Samokhvalovichi, Мinsk region, 2006-2008)On the cultivar ‘Lakomka’ for all years of inspections there was no honeythuckle-cereal aphiddamage, while on the cultivars ‘Vasilievskaya’ and ‘Goluboe vereteno’ the pest number reached 6– 8 colonies per 100 leaves. The rose tortrix moth number in cv. ‘Lakomka’ bushes for all years ofinspection did not increase 2.6 caterpillars per 2 m of branches in comparison with the cultivars‘Vasilievskaya’ and ‘Goluboe vereteno’ where there were 4 – 5 caterpillars. It was noticed that theEuropean fruit lecanium and red spider mite also to a lesser degree colonized cv. Lakomka. Therewere no essential differences between the cultivars‘Goluboe vereteno’ and ‘Vasilievskaya’ byphytophages damage.50