author(s)
Aziz-ullah lashari, Ghulam Jilani, Shafique Ahmed Memon, Mehar Un Nisa Narejo, Syed Rehmat Ullah Shah, Arif Ali, Fateh Muhammad and Dur-e-Shwar

abstract
Wheat (Triticum aestivum L.) is an important cereal crop as being consumed as a staple food in the world. The present study was conducted to determine the impact of different sowing dates and wheat (Triticum aestivum) genotypes on aphid infestation and its predation. Nine wheat genotypes Tijaban-10, Shalkot-14, Azri-96, Sarsabs, Khirman, Sarang, Esw-4525, NIA-Amber, and Kiran-96 were used in the experiment. The result revealed that a significant decrease in lowest mean population of (S. avenae and R padi) were observed in Sarsabs (1.25/spike) and kiran (0.63/spike), while a significant increase in highest mean population was seen by Azri-96 (3.98/spike and 4.33/spike). However, in all interval weeks and sowing dates a significant peak mean population of S. avenae (6.31/spike) and R padi (6.19/spike) were found in 3^rd week of 15^th November 2015 as compared to 30^th November and 15^th December 2015. But a significant decrease and less mean population of S. avenae (0.03/spike) in 5^th week of 15^th November and R. padi (0.14/spike) were observed in 5^th week of 15 December 2015. Although in all sowing dates a significant increase S. avenae (2.50/spike) and R padi (2.67/spike) in 15^th November 2015 and a significant decrease S. avenae (1.60/spike) and R padi (0.96/spike) mean population were observed in 15^th December 2015 in both aphids. However, a significantly increase mean population of predators C. septempunctata (0.41), M. sexmaculatus (0.33) and C. carnea (0.36) were noticed in sowing dates of 15^th December 2015 and significant decrease were recorded on sowing date of 15^th November 2015.