PIYOZ DALASIGA MAKKAJO`XORI VA SABZI EKISHNING DALADAGI TRIPSLAR MIQDORIGA TA`SIRI

Authors

Rasul Sobirovich Ro`zmetov 0009-0000-4341-8579
Manzura Babajonovna Doschanova 0000-0002-9978-9181
Ikram Iskandarovich Abdullayev Xorazm Ma`mun akademiyasi 0000-0002-0272-1480

Keywords:

monitoring, pest control, onion, thrips, Thrips tabaci, barrier crops, maize, carrot, population dynamics

Abstract

This study investigates the effect of planting maize and carrot as barrier crops around onion fields on the population dynamics of onion thrips (Thrips tabaci). Field experiments were conducted in 200 m² plots with three replications, and thrips counts were performed every 10 days from June 15 to July 10. The results showed that thrips density increased most sharply in the control plot without barriers—from 12 to 35 individuals. In the maize barrier plot, the increase was the lowest (from 5 to 13), while the carrot barrier plot showed a moderate rise (from 7 to 18). These findings indicate that barrier crops significantly reduce the migration of thrips into onion fields, with maize being the most effective due to its height and dense foliage. The research confirms that using barrier crops is an economically efficient and environmentally safe strategy for thrips management in onion production.

References

1. Bag, S., & Rondon, S. I. (2014). Seasonal dynamics of Thrips tabaci and its role in transmitting Iris yellow spot virus in onion cropping systems. Journal of Economic Entomology, 107(1), 75–84. https://doi.org/10.1093/jee/jet224
2. Gill, H. K., Garg, H., Gill, A. K., Gillett-Kaufman, J. L., & Nault, B. A. (2015). Onion thrips: Biology, ecology, and management in onion production systems. Journal of Integrated Pest Management, 6(1), 1–9. https://doi.org/10.1093/jipm/pmv006
3. Cameron, P. J., Walker, G. P., Herman, T. J. B., & Wallace, A. R. (2009). Development of economic thresholds for onion thrips (Thrips tabaci) in onions. New Zealand Journal of Crop and Horticultural Science, 37(2), 123–137. https://doi.org/10.1080/01140670909510257
4. Darwish, A. A. E. (2015). Ecological and behavioral aspects of Thrips tabaci on onion plants. Journal of Plant Protection and Pathology, 6(10), 1399–1413.
5. Diaz-Montano, J., Fuchs, M., Nault, B. A., Fail, J., & Shelton, A. M. (2011). Onion thrips (Thrips tabaci) and their role as vectors of Iris yellow spot virus. Plant Disease, 95(4), 469–474. https://doi.org/10.1094/PDIS-07-10-0530
6. Diaz-Montano, J., Nault, B. A., & Shelton, A. M. (2012). Evaluation of onion cultivars for resistance to onion thrips, Thrips tabaci. HortScience, 47(4), 448–453.
7. Edelson, J. V., Cartwright, B., & Royer, T. A. (1986). Distribution and impact of Thrips tabaci on onion. Journal of Economic Entomology, 79(2), 502–505.
8. Fournier, F. L., Boivin, G., & Stewart, R. K. (1995). Effect of Thrips tabaci feeding on the physiology of onion leaves. Annals of Applied Biology, 126(1), 73–79. https://doi.org/10.1111/j.1744-7348.1995.tb05001.x
9. Gill, H. K., Garg, H., Gill, A. K., Gillett-Kaufman, J. L., & Nault, B. A. (2015). Onion thrips biology, ecology, and management in onion production systems: A review. Journal of Integrated Pest Management, 6(1), 1–9. https://doi.org/10.1093/jipm/pmv006
10. Kendall, D. A., & Capinera, J. L. (1990). Population dynamics of onion thrips on onions in relation to weather variables. Environmental Entomology, 19(6), 1601–1607.
11. Morsello, S. C., & Kennedy, G. G. (2009). Spring temperature and precipitation affect Thrips tabaci population dynamics. Entomologia Experimentalis et Applicata, 130(3), 215–224.
12. Nault, B. A., & Shelton, A. M. (2010). Impact of insecticide resistance in Thrips tabaci on onion production. Pest Management Science, 66(10), 1096–1102. https://doi.org/10.1002/ps.1992

PIYOZ DALASIGA MAKKAJO`XORI VA SABZI EKISHNING DALADAGI TRIPSLAR MIQDORIGA TA`SIRI