Deltapine 50 (DP -50) and Stoneville 506 (ST -506), short season cultivars of upland cotton, Gossvpium hirsutum L., were grown under weekly or biweekly irrigation schedules in 0.2 ha plots in a split plot design at Maricopa, AZ. The seasonal average numbers of sweetpotato whitefly eggs and nymphs were 24% greater on leaves of plants irrigated biweekly. The leaves of ST-506 had 26% greater numbers of eggs and nymphs than did leaves of DP -50. Samples of lint from the two cultivars irrigated biweekly had 32 % more sugar than did lint from the cultivars irrigated weekly (weekly = 0.28 ± 0.02% , biweekly = 0.41% ± 0.03% sugar). Our results indicate that the numbers of immature sweetpotato whitefly on cotton plants can be reduced by 47% by selecting a less susceptible cultivar and avoiding plant water stress.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/209570 |
| Date | 03 1900 |
| Creators | Flint, Hollis M., Wilson, F. D., Hendrix, D., Leggett, J., Naranjo, J., Henneberry, T. J., Radin, J. W. |
| Contributors | Silvertooth, Jeff, Western Cotton Research Laboratory, USDA -ARS, Phoenix, AZ |
| Publisher | College of Agriculture, University of Arizona (Tucson, AZ) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Relation | 370094, Series P-94 |
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