The application of an experimental sample of the preparation lecanicil based on the fungusLecanicillium lecanii strain BL-1, in a 1 % concentration in the beginning of berry coloring againstthe honeythuckle-cereal aphid caused a pest number decrease on the 7 th day after treatment of41.8% (Table 3).ConclusionsIt was determined that the main pests both by occurrence and number in honeythuckle plantationsin Belarus are the honeythuckle-cereal aphid - Rhopalomyzus lonicerae Siebold, the rose tortrixmoth - Archips rosana L. and the bud moth - Spilonota ocellana Den. et Schiff. Considerably lessdamage is caused by – the red spider mite - Tetranychus urticae Koch. and the European fruitlecanium - Parthеnolecanium corni corni Bouch.It was revealed, that cv ‘Lakomka’ in the conditions of Belarus is not damaged by thehoneythuckle-cereal aphid and to a lesser degree, in comparison with the cultivars ‘Vasilievskaya’and ‘Goluboe vereteno’ is colonized by rose tortrix moth, the European fruit lecanium and the redspider mite.The biological preparation baciturine, ps., titer 45 – 60 mlrd viable spores g -1 (spore-ctystalcomplex and the exotoxin Bacillus thuringiensis, var. darmstadiensis, strain № 24 – 91) at the rateof preparation application 6 l hа -1 and at the working solution rate of 600 l hа -1 has caused 41.6 %death rate of rose tortrix moth caterpillars on the 3 rd day after treatment and 55 % - on the 7 th dayafter preparation application. The efficiency of application of an experimental sample of thepreparation lecanicil produced based on the fungus Lecanicillium (Verticillium) lecanii Zimm.Zare et W. Gams strain BL-1. 6 l hа -1 at the beginning of berry coloring against honeythucklecerealaphid was 41.8 % effective on the 7 th day after treatment.References1. Zar H.J.(1996) Biostatistical analysis, Prentice-Hall Int., London, 662 p.2. Alekhin V.T., Ermakov A., Cherkashin V.I. (1988) Kontrol phytosanitarnogo sostoyaniya sadov ivinogradnikov (Control of phytosanitary orchard and vineyard condition) Zatschita i karantin rastenij,2, pp. 54-57. (In Russian).3. Green N., Staut U., Talor D. (1996) Biologiya. Kolichestvennaya ekologiya (Biology. Quantitativeecology), Moskva, 2, pp. 127-150. (In Russian).4. Babenko Z.S. (1982) Nasekomye-phytophagi plodovykh i yagodnykh rastenij lesnoy zony Priobiya(Insects–phytophages of fruit and berry plants of the forest Priob zone), Tomsk: Izdatelstvo TomskogoUniversiteta, 27 p. (In Russian).5. Vasiliev V.P. (1975) Vrediteli selskokhozyajstvennykh kultur i lesnykh nasazhdenij (Pests of agriculturalcrops and forest plantations), Kiev: Urozhaj, 3, pp. 364-365. (In Russian).6. Lonicera. Available at: http: flower.onego.ru/kustar/lonice_v.html, 15.01.2009.7. Lonicera. Available at: http:luzhok.ru/encyclop/garden/treesbrush/art489.html., 15.01.2009.8. Naumova L.V. (2002) Vrediteli zhimolosti sjedobnoy (Edible honeysuckle pests), Zatschita i karantinrastenij, 5, 57 p. (In Russian).9. Panteev A.V. (1997) Yagody na dache (Berries in private plot), Minsk, Sovremennoe slovo, 320 p. (InRussian).10. Plekhanova M.N. (1990) Aktinidiya, limonnik, zhimolost (Aktinidia, magnolia vine, honeythuckle),Leningrad: Agropromizdat, 87 p. (In Russian).11. Rupice A.A. (1981) Vrediteli dereviev i kustarnikov v zelenykh nasazhdeniyakh Latvii (Pests of trees andbushes in green plantations of Latvia), Riga, Zinatne, 264 p. (In Russian).12. Ulanova E.S., Zabelin V.N. (1990) Metody korrelyatsionnogo i regressionnogo analiza vagrometeorologii (Methods of correlation and regression analysis in agrometeorology), Leningrad, 201p. (In Russian).52
CHEMICAL COMPOSITION OF HIGHBUSH BLUEBERRY CULTIVARSKRŪMMELLEĥU ŠĖIRĥU ĖĪMISKAIS SASTĀVSSolvita Kampuse 1 , Elga Šnē 1 , Dace Šterne 2 , Inta Krasnova 31 Faculty of Food Technology, Latvia University of Agriculture (LLU), Liela Street 2, Jelgava, Latvia,e-mail: skampuse@inbox.lv2 Faculty of Agriculture, LLU, Jelgava, Latvia3 The Latvia State Fruit Growing Institute, Graudu 1, Dobele, LatviaAbstractThe breeding of blueberries has expanded so far that now the number of the highbush blueberrycultivars has reached several hundreds, and sixty of them are particularly widespread. The chemicalcomposition and suitability for the processing of highbush blueberries has been researched quiteextensively, mostly in the USA, but there are no such studies and data for blueberries grown inLatvia. Therefore the aim of this investigation was to compare the biochemical composition ofdifferent highbush blueberry cultivars grown in Latvia.The experiments were done at the Faculty of Food Technology, Latvia University of Agriculture(LLU), Jelgava, and at the Latvia State Fruit Growing Institute, Dobele during the year 2008. Thesamples of highbush blueberry cultivars were collected from the blueberry collection of Institute ofAgrobiotechnology (LLU). The contents of titratable acids, soluble solids, ascorbic acid, totalphenols, and anthocyanins of frozen fruits of the highbush blueberry cultivars 'Northland', 'Spartan','Barkeley', Duke', 'Chippewa', 'Bluecrop', 'Jersey', 'Blueray', 'Chandler', and 'Bluejay' wereanalysed.The cultivars ‘Northland’ and 'Chippewa' had the highest anthocyanin content (on average 297.59and 288.83 mg 100 g -1 , respectively), the highest phenol content was detected in highbushblueberry cultivar 'Spartan' (on average 381.14 mg 100 g -1 ), the highest content of ascorbic acidwas in cultivar ‘Bluejay’ (on average 11.8 mg 100 g -1 ), the highest titratable acids content in theberries of the cultivar ‘Chandler’ (1.35 %), and the cultivar with the highest soluble solids contentwas ‘Duke’ (on average 12.99 % soluble solids).KopsavilkumsMelleĦu audzēšana jau ir izplatījusies tādā apmērā, ka uz doto brīdi krūmmelleĦu šėirĦu skaits jauir sasniedzis vairākus simtus un sešdesmit no tām ir plaši izplatītas. KrūmmelleĦu ėīmiskais sastāvsun piemērotība pārstrādei tiek intensīvi pētīta – visvairāk ASV, bet pagaidām nav tādu pētījumu undatu par Latvijā audzētajām krūmmellenēm. Pētījuma mērėis bija salīdzināt dažādu Latvijā audzētokrūmmelleĦu šėirĦu bioėīmisko sastāvu.Eksperimenti tika veikti <strong>Latvijas</strong> Lauksaimniecības universitātes Pārtikas tehnoloăijas fakultātē un<strong>Latvijas</strong> Valsts AugĜkopības institūtā 2008. gadā. KrūmmelleĦu šėirĦu paraugi tika ievākti noAgrobiotehnoloăijas institūta (LLU) kolekcijas. ŠėirĦu 'Northland', 'Spartan', 'Barkeley', Duke','Chippewa', 'Bluecrop', 'Jersey', 'Blueray', 'Chandler' un 'Bluejay' paraugiem tika analizētastitrējamās skābes, šėīstošā sausna, askorbīnskābe, kopējie fenoli un antociāni.ŠėirĦu ‘Northland’ un ‘Chippewa’ paraugiem tika konstatēts augstākais antociānu saturs (vidēji297.59 un 288.83 mg 100 g -1 ). Augstākais kopējo fenolu saturs noteikts šėirnes 'Spartan' paraugam(vidēji 381.14 mg 100 g -1 ), augstākais askorbīnskābes saturs bija škirnei ‘Bluejay’ (vidēji 11.8 mg100 g -1 ). Augstākais titrējamo skābju saturs bija šėirnes ‘Chandler’ (1.35 %) paraugam, un šėirne araugstāko šėīstošās sausnas saturu bija ‘Duke’ (vidēji 12.99 % šėīstošās sausnas).Key words: Vaccinium corymbosym, ascorbic acid, soluble solids, phenols, anthocyanins, titratableacidsIntroductionThe highbush blueberries (family Ericaea, genus Vaccinium corymbosym) are a relatively novelshrub berry crop. In the early 1900’s two enthusiasts - Elizabeth White and Dr. Frederick Coville -aspired to domesticate the wild blueberries. Their efforts and selection work by plant breeders andand pathologists has created nowadays plump, juicy, sweet and easy-to-pick cultivated blueberries.53
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References1. Baloga D.W., Vorsa N.,
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obtained from fruits of black choke
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In our opinion, the best estimate a
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cuttings also varies markedly with
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shoots shorter than 10 mm were not
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14. Ostrolucka M.G., Gajdosova A, L
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SHORT INFORMATION ABOUT THE HISTORY
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Evaluation of cultivars. After the
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the number of pistils (female clone
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Table 2. Number of flowers per harv
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ResultsFirst time upright dieback i
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grew rapidly on PDA at 20 - 24 o C.
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References1. CABI, EPPO, (1997) Dia
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Results und DiscussionBerries were
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In literature Caruso eds. and Гop
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the total area under a cranberry ma
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Skilled works on development of the
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Tika atrastas dažas būtiskas ats
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appears to maintain a quite low lev
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8. Garkava - Gustavson L.,Persson H