Weed control method | 2008 soil temperature | ||||||||||
July | August | September | October | November | |||||||
-------------------- ˚C -------------------- | |||||||||||
Landscape fabric | 22.6 | bz | 22.8 | b | 17.6 | a | 10.1 | a | 7.3 | a | |
Herbicide | 25.5 | a | 25.0 | a | 16.6 | ab | 8.9 | b | 5.6 | b | |
Straw mulch | 19.9 | c | 20.4 | c | 16.1 | b | 9.5 | ab | 6.6 | ab | |
Woodchip mulch | 21.7 | b | 22.2 | b | 17.5 | a | 10.5 | a | 7.0 | a | |
p > fy | <0.0001* | <0.0001* | 0.0302* | 0.0469* | 0.0229* | ||||||
Weed control method | 2009 soil temperature | ||||||||||
July | August | September | October | November | |||||||
-------------------- ˚C -------------------- | |||||||||||
Landscape fabric | 19.7 | ab | 19.8 |
| 16.1 |
| 8.8 | a | 7.0 | a | |
Herbicide | 22.0 | a | 19.8 |
| 17.4 |
| 6.1 | b | 4.5 | b | |
Straw mulch | 18.5 | b | 18.6 |
| 17.0 |
| 7.0 | ab | 4.7 | b | |
Woodchip mulch | 20.2 | ab | 20.4 |
| 18.0 |
| 8.9 | a | 6.4 | ab | |
p > f | 0.0116* | ns | ns | 0.0186* | 0.0337* | ||||||