| dc.contributor.author | Podliska, Kellie Kay | |
| dc.description.abstract | Field experiments were conducted to determine the efficacy of current Bt traits in maize (Zea mays L.) hybrids and soil-applied insecticide for corn rootworm (Diabrotica spp.) management. Experiments were conducted as a randomized complete block design with a split-plot arrangement. The whole plot was no insecticide or soil-applied insecticide. The subplots were different Bt maize hybrids and treatments: non-Bt (untreated control), seed-applied insecticide, Cry3Bb1, Cry34/35Ab1, and Cry3Bb1 + Cry34/35Ab1. Root injury was evaluated using the Iowa State University rating system. Hybrids expressing any Cry protein averaged 0.12 nodes pruned. Hybrids without Cry proteins averaged 0.37 nodes pruned. Seed-applied insecticide reduced root pruning compared to the untreated control. Both had greater root injury than hybrids with Cry proteins. Soil-applied insecticide did not always reduce root pruning. Hybrid yield and test weight were highly variable, depending on the hybrid’s genetics. This research indicates the Bt-traits tested are effective in managing corn rootworm. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | |
| dc.title | Efficacy of Current Maize BT Traits Against Corn Rootworms in North Dakota | en_US |
| dc.type | Thesis | en_US |
| dc.date.accessioned | 2018-03-20T18:03:41Z | |
| dc.date.available | 2018-03-20T18:03:41Z | |
| dc.date.issued | 2015 | |
| dc.identifier.uri | https://hdl.handle.net/10365/27820 | |
| dc.subject.lcsh | Botany. | en_US |
| dc.description.sponsorship | North Dakota Corn Utilization Council | en_US |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | |
| ndsu.degree | Master of Science (MS) | en_US |
| ndsu.college | Agriculture, Food Systems and Natural Resources | en_US |
| ndsu.department | Plant Sciences | en_US |
| ndsu.program | Plant Sciences | en_US |
| ndsu.advisor | Ransom, Joel K. | |
