[01] Laila Khalid, Adaptive Research Farm Vehari, Punjab, Pakistan. [02] Munir Ahmed, Department of Entomology, Pir Mehr Ali ShahArid Agriculture University, Rawalpindi, Pakistan. [03] Humayun Javed, Department of Entomology, Pir Mehr Ali ShahArid Agriculture University, Rawalpindi, Pakistan. [04] Malik Ghulam Yasin, Zonal Manager Suncrop Company Punjab, Punjab, Pakistan.

Rose is an important cut flower grown on large scale in Pakistan for commercial purposes. Thrips is one of the most important sucking pests of Rose causing a huge loss to yield and beautification of Roses. The purposed research work was carried out under Randomized Complete Block Design (RCBD) to study the population dynamics of rose thrips at experimental field area of Pir Mehr Ali Shah Arid Agriculture University Rawalpindi on different Rose cultivars, Iceberg, Christan dair, Visky Mac, Love, Surkha rose, Macadi, Perfecta and Gold Medal. Thrips was recorded on buds and flowers by using the magnifying lens and the effect of environmental factors on thrips population was studied. The data was collected from the 1st appearance of thrips on rose cultivars, and was continued until the end of population. Significantly greater thrips populations were observed on Perfecta, Iceberg and Gold Medal. However, significantly lesser thrips observed on Love and Mecadi. The expected results concluded from the studies will be helpful for the end users including gardeners and park managers to improve the health of their roses by knowing about the population fluctuation of rose thrips for its better management.

Rose, Thrips, Varieties, Population

[01] Chambers, R. J., K. G. Sunderland, D. L. Stacey and I.J. Wyatt. 1985. Control of thrips on winter rose. Journal of annals of applied Biology, 108: 219-23. [02] Chellemi, D. O., J. E Funderburk and D. W. Hall 1994. Seasonal abundance of flower-inhabiting Frankliniella species (Thysanoptera: Thripidae) on wild plant species. Environmental Entomology. 2: 337-342. [03] Childers, C. C. 1997. Feeding and oviposition injuries to plants. Thrips as Crop Pests (ed. T. Lewis), CAB International, Wallingford, UK. 339- 433. [04] Cho, K., J. F. Walgenbach and G. G.Kennedy. 2000. Daily and temporal occurrence of Frankliniella spp. (Thysanoptera: Thripidae) on rose.Applied Entomology and Zoology. 2: 207-214. [05] Chyzik, R. and O. Ucko. 2002. Seasonal abundance of the western flower thrips Frankliniella occidentalis in the Arava valley of Israel. Phytoparasitica. 4:335-346. [06] Gill, H. K., and H. Garg. 2014. Pesticide: Environmental Impacts and Management Strategies, pp. 187-230. In: S. Solenski, and M. L. Larramenday (Eds.). Pesticides- Toxic Effects. Intech. Rijeka, Croatia. (http://www.intechopen.com/books/pesticides-toxic-aspects/pesticides-environmental-impacts-and-management-strategies). [07] Gudin, S. 2000. Rose: Genetics and breeding. Plant Breeding. 17: 159–189. [08] Jaskiewicz. 2003. Population dynamics of Frankliniella spp. on rose in the green areas of Lublin. Annales Universities Mariae- Curie-Skodowska-Sectio- EEE, Horticulture. 13:271-278. [09] Leskey, T. C., D. A. J. Teulon and E. A. Cameron. 1997. Effects of Temperature and Sugar Maple Pollen on Oviposition and Longevity of Pear Thrips (Thysanoptera: Thripidae). Environmental Entomology. 3: 566-571. [10] MacIntyre, A. J., Scott, C. D. Dupree, J. H. Tolman and C. R. Harris. 2005. Evaluation of sampling methodology for determining the population dynamics of thrips (Thysanoptera: Thripidae) in Ontario flower fields. Journal of Economic Entomology. 6: 2272-2281. [11] Magalhaes, S., P. C. J. Van Rijn, M. Montserrat, A. Pallini and M. W. Sabelis. 2007. Population dynamics of thrips prey and their mite predators in a refuge. Oecologia 4:557-568. [12] Mound, L. A. 2007. Thysanoptera (Thrips) of the World - a Checklist. Commonwealth Scientific and Industrial Research Organization,Entmol. Canberra, Australia. http://www.ento.csiro.au/thysanoptera/worldthrips.html. [13] MSTAT-C, Manual. Micro statistical programme, Michigan State University, USA (1991). [14] Northfield, T. D, D. R. Paini, J. E. Funderbur, and S. R. Reitz. 2008. Reitz Annual cycles of Frankliniella spp. (Thysanoptera: Thripidae) thrips abundance on north Florida uncultivated reproductive hosts: Predicting possible sources of pest outbreaks. Annals of the Entomological Society of America. 4 : 769-778. [15] Nothnagl, M., A. Kosiba, B. W. Alsanius, P. Anderson and R. U. Larsen. 2008. Modelling population dynamics of Frankliniella occidentalis pergande (Thysanoptera: Thripidae) on greenhouse grown chrysanthemum. Europ. J. of Hort. Sci. 73: 12-19. [16] Palmer, J. M., L. A. Mound and G. J. D. Heaume. 1992. II Guides to insect of importance to man. Thysanoptera (London) International Institute of Entomol. Brit. Nat. Hist. Mus. 1-73 pp. [17] Reitz, S. R. 2002. Seasonal and within plant distribution of Frankliniella thrips (Thysanoptera: Thripidae) in North Florida tomatoes. Florida Entomologist 3: 431-439. [18] Rosenheim, J. A., S. C. Welter, M. W. Johnson, R. F. L. Mau and L. R. Gusukuma-Minuto. 1990. Direct Feeding Damage on Cucumber by Mixed-Species Infestations of Thrips palmi and Frankliniella occidentalis (Thysanoptera: Thripidae). J. Econ. Entmol. 83: 1519-1525. [19] Rustmani, M. A., S. A. Sheikh, N. Memin, M. H. Leghari and M. H. Dhaunroo.1999. Impact of wheat plant phenology on the development of Greenbug, Schizaphis graminum (Rondani). Pakistan J. Zoology. 31 (3): 245-248. [20] Sujatha, K. and J. V. N. Gowda. 1997. Population technology of rose. In: I.S. Yadav and M. L. Choudhary (Eds.). Progressive Floriculture. Production technologies of important commercial flowers. The House of Sarpan(Media) Bangalore, 231 pp. [21] Vacante, V. 2000. Animali dannosi alle ortive da serra. In: (a cura di). Manuale di Zoologia Agraria. Ed. By Baccetti, B.; Barbagallo, S.; Su¨ss, L.; Tremblay, E. Roma: Delfino.544-765 pp. [22] Waterhouse, D. F. and K. R. Norris. 1989. Frankliniella occidentalis (Pergande). In: Biological Control Pacific Prospects - Supplement 1. Aust. Centre Int Agric. Res. Canberra. 24-35 pp. [23] Weiss, E.A. 1997. Rosaceae. In Essential Oil Crops. E.A. Weiss, ed (Oxon, UK: CAB International Wallingford), pp. 393–416.