Year and period | Group | Mines/leaf | % small on total | % leaf surface injured | ||
---|---|---|---|---|---|---|
Small | Large | Total | ||||
1998 | ||||||
Early June | no removal | 6.5 | 20.2 | 26.7 b* | 24 | 14.1 b |
contiguous | 2.6 | 5.1 | 7.7 a | 34 | 3.3 a | |
removal | 0.5 | 1.5 | 2.1 a | 25 | 1.0 a | |
Late July | no removal | 23.2 | 115.3 | 138.4 b | 17 | 61.4 c |
contiguous | 47.8 | 82.8 | 130.6 b | 37 | 41.3 b | |
removal | 32.9 | 21.1 | 54.0 a | 61 | 13.3 a | |
Late August | no removal | 86.1 b | ||||
contiguous | 87.7 b | |||||
removal | 56.3 a | |||||
1999 | ||||||
Early June | no removal | 1.3 | 9.1 | 10.4 b | 12 | 5.3 b |
contiguous | 0.2 | 1.8 | 2.0 a | 10 | 0.7 a | |
removal | 0.1 | 0.5 | 0.6 a | 17 | 0.3 a | |
Late July | no removal | 12.1 | 37.2 | 49.2 b | 25 | 20.2 b |
contiguous | 12.8 | 20.7 | 33.1 a | 38 | 9.2 a | |
removal | 8.7 | 7.9 | 16.6 a | 52 | 4.8 a | |
Late August | no removal | 79.0 b | ||||
contiguous | 51.2 a | |||||
removal | 32.2 a | |||||
2000 | ||||||
Early June | no removal | 6.7 | 24.0 | 30.6 b | 22 | 14.2 b |
contiguous | 1.7 | 4.4 | 6.1 a | 28 | 1.8 a | |
removal | 1.0 | 1.5 | 2.6 a | 40 | 0.8 a | |
Late July | no removal | 5.4 | 129.3 | 134.6 b | 4 | 66.1 b |
contiguous | 14.1 | 75.5 | 89.7 b | 16 | 33.1 a | |
removal | 2.9 | 31.5 | 34.5 a | 8 | 16.2 a | |
Late August | no removal | 96.0 a | ||||
contiguous | 92.3 a | |||||
removal | 92.5 a |
↵* Inside each year and period, groups with the same letter are not significantly different at 0.05 level according to the Tukey test.