Table 3 Number of Spodoptera exigua larvae (/50 leaves) post treatments with Beauveria bassiana in sugar beet field in season 2017/2018
Dates of inspections | Numbers of larvae | Reduction** (%) | Dates of inspections | Numbers of larvae | Reduction** (%) | ||
|---|---|---|---|---|---|---|---|
Treat. | Cont. | Treat. | Cont. | ||||
8 November 2017* | 4 | 4 | 26 March 2018* | 3 | 4 | ||
3 December 2017 | 2 | 6 | 66.6 | 4 April 2018* | 1 | 4 | 75 |
18 January 2018 | 0 | 3 | 11 April 2018* | 2 | 4 | 50 | |
27 January 2018 | 1 | 3 | 18 April 2018* | 1 | 5 | 80 | |
20 February 2018 | 3 | 4 | 25 April 2018 | 1 | 4 | 75 | |
3 March 2018 | 3 | 4 | 2 May 2018 | 1 | 2 | ||