Influence of tillage, planting date, and Bt cultivar on seasonal abundance and within-plant distribution patterns of thrips and cotton fleahoppers in cotton
- 1 July 2006
- journal article
- research article
- Published by Taylor & Francis in International Journal of Pest Management
- Vol. 52 (3), 249-260
- https://doi.org/10.1080/09670870600774240
Abstract
Thrips (Thysanoptera: Thripidae( and cotton fleahoppers, Pseudatomoscelis seriatus (Reuter( (Hemiptera: Miridae(, are considered to be significant economic pests of cotton in Texas, USA. A 2-year field study evaluated the influence of planting date, tillage practice, and Bt cotton on seasonal abundance patterns of thrips and cotton fleahoppers and their within-plant distribution patterns in cotton. Thrips were sampled visually while fleahoppers were sampled both visually and with a ‘beat bucket’ at weekly intervals throughout the growing season. Thrips infestations had two distinct peaks, with the first peak at the one to two main stem node leaf stage and the second peak during the flowering stage. Cotton fleahoppers had only one infestation peak at 13 – 15 weeks after planting (after crop cutout(. Average seasonal abundance of each pest was significantly influenced by tillage practice with higher numbers in conventional tillage compared with that in conservation tillage plots. Thrips abundance was similar between the two cultivars, whereas cotton fleahopper abundance was significantly higher in non-Bt cotton compared with that in Bt cotton. Thrips average seasonal abundance was significantly higher in timely planted cotton compared with that in late-planted cotton. Thrips were more prevalent in upper one-third vertical stratum (51%( followed by middle stratum (33%( and the lower stratum (16%(. Cotton fleahopper within-plant distribution was similar to that for thrips, with 65, 24, and 11% of the total abundance found in upper, middle, and lower one-third of the plant, respectively.Keywords
This publication has 22 references indexed in Scilit:
- Within-Plant Distribution of Frankliniella species (Thysanoptera: Thripidae) and Orius insidiosus (Heteroptera: Anthocoridae) in Field PepperEnvironmental Entomology, 2003
- Influences ofBacillus thuringiensisBerliner Cotton Planting on Population Dynamics of the Cotton Aphid,Aphis gossypiiGlover, in Northern ChinaEnvironmental Entomology, 2003
- Diversity of Arthropod Communities in Transgenic Bt Cotton and Nontransgenic Cotton AgroecosystemsEnvironmental Entomology, 2003
- Recovery of Cotton Crops after Early Season Damage by Thrips (Thysanoptera)Crop Science, 1998
- Relay intercropping to enhance abundance of insect predators of cotton aphid (Aphis gossypii Glover) in Texas cottonInternational Journal of Pest Management, 1997
- Within-plant distribution of thrips and their predators: effects of cotton variety and developmental stageBulletin of Entomological Research, 1996
- Cotton Yield Response to Cotton Fleahopper (Hemiptera: Miridae) Infestations on the Lower Gulf Coast of TexasJournal of Economic Entomology, 1993
- Influence of Planting Date and Insecticide Treatment on Insect Pest Abundance and Damage in Dryland CottonJournal of Economic Entomology, 1993
- Analysis of Combined Experiments1Agronomy Journal, 1983
- Reduced- vs. Conventional Tillage Practices in Cotton and Tobacco: a Comparison of Insect Populations and Yields in Northeastern South Carolina, 1977–197912Journal of Economic Entomology, 1981