Data of a field trial concerning the impact of a genetically modified variety on the abundance of Planthoppers and Leafhoppers. The trial was designed as a randomized complete block design with 8 blocks (Row). In each block, three treatments were randomized: a conventional variety treated with insecticides (Insecticide), a genetically modified variety (GM), and the near-isogenic line (Iso) the to genetically modified line.
A data frame with 24 observations on the following 6 variables.
a factor with levels
2, separating the two major sites of the trial. On field 1, the blocks 1-5 were situated, on field 2, blocks 6-8 were situated.
a factor with 8 levels, specifying the blocks:
a numeric vector, for year 1 of the trial
a factor with 3 levels, specifying the genetically modified variety
the conventional variety treated with insecticides
and the variety that was near-isogenic to the GM variety
Counts of Auchenorryhncha by visual assessment
Counts of the major species Zyginidia scutellaris, catched by sweep nets
1 2 3 4 5 6 7 8 9 10 11
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