caa a22 4500 469060956 CHVBK 20180323132857.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF01219102 doi (NATIONALLICENCE)springer-10.1007/BF01219102 Damage and economic injury levels of eriophyid and tetranychid mites on grapes in Czechoslovakia [Elektronische Daten] [M. Hluchý, Z. Pospíŝil] The relationships between population densities ofCalepitrimerus vitis (Nalepa),Colomerus vitis (Pagenstecher) andTetranychus urticae (Koch), and grape weight and sugar content were studied during 3-year-long trials. In the case ofCalepitrimerus vitis, the influence of population density on leaf area, length of spring shoots and number of grapes in the following year was studied. Significant relationships between population densities of bothCalepitrimerus vitis andT. urticae in late summer and grape weight were determined. The sugar content of the grapes was markedly less influenced by mite infestation. The negative effect ofColomerus vitis on grape weight was not confirmed. Significant relationships for crop-protection decisions are presented. Elsevier Science Publishers B.V., 1992 Hluchý M. Central Checking and Testing Institute of Agriculture, Zemědělská la, PSC658 37, Brno, Czech and Slovak Federal Republic aut Pospíŝil Z. Central Checking and Testing Institute of Agriculture, Zemědělská la, PSC658 37, Brno, Czech and Slovak Federal Republic aut Experimental & Applied Acarology Kluwer Academic Publishers 14/2(1992-05-01), 95-106 0168-8162 14:2<95 1992 14 10493 https://doi.org/10.1007/BF01219102 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01219102 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hluchý M. Central Checking and Testing Institute of Agriculture, Zemědělská la, PSC658 37, Brno, Czech and Slovak Federal Republic aut NATIONALLICENCE 700 1- Pospíŝil Z. Central Checking and Testing Institute of Agriculture, Zemědělská la, PSC658 37, Brno, Czech and Slovak Federal Republic aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 14/2(1992-05-01), 95-106 0168-8162 14:2<95 1992 14 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer