| Autor: |
Murray, Z., Thrash, B. C., Bateman, N. R., Plummer, W. A., Ibbotson, T., Mann, M., Felts, S. G., Floyd, C. A., Newkirk, T., Whitfield, A., Harris, T. |
| Předmět: |
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| Zdroj: |
B.R. Wells Rice Research Studies - Arkansas Agricultural Experiment Station, University of Arkansas System; Sep2023, Issue 695, p86-89, 4p |
| Abstrakt: |
Bollworm (Helicoverpa zea, Bodie) is currently the second most damaging insect pest of cotton in Arkansas. The primary method used to control bollworms in cotton is the use of transgenic Bacillus thuringiensis (Bt) technologies. Resistance to dual-gene cotton cultivars has recently been documented in bollworm, and results indicate that supplemental foliar applications may be needed to manage high populations. Research was conducted in 2021 and 2022 at Tiller (Drew County), Arkansas, to evaluate the efficacy of several Bt technologies. Results suggest that sprayed dual-gene cultivars had similar levels of damage to unsprayed three-gene cultivars. All three-gene treatments, sprayed non-Bt, and sprayed Bollgard II, had similar yields, which were greater than unsprayed non-Bt and unsprayed Bollgard II. These data suggest that dual-gene cultivars may need a supplemental foliar application for bollworm. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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