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Predicting aphid abundance on winter wheat using suction trap catches

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Figure

Figure 1. The seasonal distribution of the average weekly catches in the national grid of suction traps of the Czech Republic in 1999–2015: (A) Rhopalosiphum padi, (B) Metopolophium dirhodum and (C) Sitobion avenae
Table 1. The average (± SE) maximum abundance of the aphids in the experimental plots of the winter wheat in Prague-Ruzyně (MAXAB) and the average annual catches per trap in the national grid of suction traps of the Czech Republic (CATCH), in 1999–2015
Figure 3. The percentage of the particular aphid species
Figure 5. The maximum abundance (nHorizontal line – damage threshold of 40 aphids per tiller/tiller) in the expe-rimental plots in Prague-Ruzyně (each plot is indicated by a particular symbol) plotted against the average suction trap catch before the 15th of June in the combined data from Čáslav and Žatec (n aphids): (A) Metopolophium dirhodum, (B) Sitobion avenae and (C) Rhopalosiphum padi;

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