Interactions between seed depth, thickness of trash blanket and herbicide treatments on emergence of vine weeds in sugarcane
| MSI10P4457 | |
| Gaungoo, A. Seeruttun, S. Barbe, C. | |
| Interactions between seed depth, thickness of trash blanket and herbicide treatments on emergence of vine weeds in sugarcane | |
| periodical article | |
| 2010 | |
| Proc. int. Soc. Sug. Cane Technol. | |
| 27: 11 p. | |
| En | |
| En | |
| Vine weeds are appearing more frequently in sugarcane fields, particularly with the increasing adoption of green cane trash blanketing (GCTB). Current control measures are not effectively providing adequate control of these weeds. A project to develop strategies for managing vine weeds has been initiated and included three trials studying the factors influencing emergence of three Ipomoea species sown in trays. In the first trial, seeds of I. triloba and I. obscura were found to emerge at depths beyond 8 cm while germination of I. nil was reduced at seed depths greater than 4 cm. In the second trial, emergence of the three vine species was found to be unaffected by a trash layer of 5 cm whereas a significant reduction was observed as trash thickness was increased to 10 cm. An interaction between depth of the vine seed and thickness of trash layer was also noted; i.e. emergence of seeds at depths between 2 and 4 cm was reduced by more than 75 per cent when covered by a trash layer of 10 cm. In the third trial, six pre-emergence herbicide treatments namely atrazine, atrazine + hexazinone, sulfentrazone, amicarbazone, trifloxysulfuron + ametryn, and diclosulam were tested for their efficacy against I. triloba sown at soil depths of 2, 6 and 10 cm. At 6 weeks after spraying (WAS), irrespective of seed depth, all herbicide treatments provided satisfactory control. The interaction between herbicide treatment and seed depth was significant at 12 WAS; irrespective of sowing depths, only sulfentrazone provided less than 5 per cent germination over a period of 18 WAS. These results indicate that both thickness of the trash layer and choice of the herbicide treatment should be taken into consideration in the development of strategies to control vines in sugarcane under GCTB. | |
| Ipomoea spp Sulfentrazone Diclosulam Pre-Emergence Control Vine weeds green cane trash blanketing weed management Ipomoea triloba Ipomoea obscura Ipomoea nil herbicides sugarcane | |
| Mauritius | |
| Sugarcane: Weeds, Weed control, and Management | |
| Weeds Herbicides | |
| 2010-03-17 | |
| EN | |
| LIB | |
| CAT | |
| COWA |