1Integrated Pest Management Laboratory, Department of Entomology, University of AgricultureFaisalabad, Pakistan
2Department of Zoology, Wildlife and Fisheries, University of AgricultureFaisalabad, Pakistan
3Department of Plant Pathology, University of AgricultureFaisalabad, Pakistan
4Institute of Insect Science, College of Agriculture and Biotechnology, Zhejiang UniversityChina
*Current affiliation/address: Department of Plant Sciences, College of Agriculture and Marine Sciences, Sultan Qaboos UniversityAl-Khoud 123, Muscat, Oman
*Email: nawazrajpoot@yahoo.com; ahmad.nawaz1793@uaf.edu.pk (corresponding author): ORCID ID 0000-0001-7771-1933
Online Published on 31 August, 2024.
Four aphid species (Schizaphis graminum, Sitobion avenae, Rhopalosiphum padi and Diuraphis noxia) were observed when the population dynamics of aphids in four wheat varieties were analysed. Maximum population abundance (104 ± 1.79 aphids/ plant) was observed during middle of March. Rhopalosiphum padi and D. noxia were predominant throughout (52.86.1 ± 0.21 and 56.10 ± 0.24 aphids/ plant, respectively). The variety ANAJ-2017 showed the least incidence (26.28 ± 0.27 aphids/ plant) being more resistant. Aphid parasitism was also more in ANAJ-2017 with the parasites Aphidius ervi (15.35 ± 0.13) and Praon volucre (12.45 ± 0.12). Abundance of predators (ladybird beetle, green lace wing, syrphid fly and spiders) was observed with the highly infested varieties UJALA-2016 and FSD-2008. With incidence of aphids, temperature showed positive correlation while relative humidity (RH) and rainfall did not show any significant effect. The yield varied significantly among the tested varieties and it was found positively correlated with aphid incidence with ANAJ-2017 exhibiting the maximum 1000 grain weight (55 g).
Wheat varieties, Schizaphis graminum, Sitobion avenae, Rhopalosiphum padi, Diuraphis noxia, Predators, Parasitoids, Population dynamics, Yield, Grain weight
