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Mean spike length, number of grains per spike, 100 . Stay of aphid population on Wheat is for short time period during which rapid multiplication of aphid occurs (Jarosik et al. The aphid attack started in mid January on the wheat cultivars and increased gradually with the growth of plant. Updated May 4, 2006 by Gary Hein and John Thomas. In addition to this, aphids as pathogens vector play a significant role in transmitting, many fungal and viral diseases in plants (Bukvayova et al., 2006). et al., 1993). Faisalabad-85 had a DR of 4, PARI-73, Sandal and Yecora had a DR of 5, and PAK-81, WL-711, Sutluj-86 and Nuri-70 had a DR of 6. The grain aphid is considered a major pest for wheat and a moderate pest for barley. Of the 44 recommended wheat cultivars in Pakistan, Punjab-85 was found to be resistant (visual damage rating (DR) 3 at 0 to 9 damage scale; 0, healthy; 9, dead). Identifying the bird cherry-oat aphid . (Rond) were recorded as the dominated aphids of wheat in Pakistan in this study. Shizaphis graminum (Rodani) is major species in Pakistan (21) with an ample host array of at least 60 plant species including wheat, barley, sorghum and corn (17, 10). Common Name Scientific name Family Order Wheat Aphid Macrosiphum miscanthi Aphididae Homoptera Armyworm Mythimna sepatate Noctuidae Lepidoptera Wheat weevil Tanymecus indicus Curculionidae Coleoptera Wheat Stem Fly Atherigona soccata Muscidae Diptera 2. Our observation was made from heading to early-dough stage. Future wheat crop in Pakistan is in threat due to aphid infestation and its becoming a serious problem for them (Wains et al. Population was comparatively higher on variety Pir Sabaque-85 (Fig. Hashmi et al (8) found four species of aphid damaging the wheat crop (viz; Sitobion avenae (F.) Schizaphis graminum Round), Rhopalosiphum rufiabdominalis (Sasaki) and Rhopalosiphum maidis (Fitch).Anonymous (1) reported that Macrosiphum granarium (F.) is a major species causing 100% … The population of these three aphid species remained very low during January, started building up in the 4 week of December and reached its peak in the mid February . Due to concern on synthetic chemical use in wheat, it is imperative to search for alternative environment- and human- friendly control measures such as botanical pesticides. Following a modification of Ronquim et al., 2004, Muhammad et al. This pest species was collected from the wheat fields located in the vicinity of Faisalabad. Wheat aphid; Botanical extract; Pakistan INTRODUCTION Plant protection plays an important role in addition to good seed, fertile soil, irrigation water and fertilizer management for maximum production. Pests of cereals Pakistan Wheat Aphid Wheat Armyworm Wheat stem fly 1. Following is the list of coomon weeds in Wheat fields of Pakistan: Common Name Dumbi Sitti Technical Name Phalaris minor Common Name Jangli Jai Technical … Several kinds of aphids infest wheat in Pakistan. Population dynamics of wheat aphids Rhopalosiphum padi (Linnaeus) and Sitobion avenae (Fabricius) at District Mardan, Khyber Pakhtunkhwa Pakistan Farman Ullah1,2*, Hina Gul1,2, Fazal Said2, Asad Ali2,3, Kaleem Tariq2, Maid Zaman4 and Dunlun Song1 1. et al., 1999). The dominant weeds prevailing in wheat crops were Avena fatua, Chenopodium album, Chenopodium murale, Convolvulus arvensis, Cynodon dactylon, Malva parviflora, Melilotus indica, Medicago denticulata, Phalaris minor and Rumex dentatus. In addition to the lint, cottonseed for oil and meal accounts for 80 percent of the national oilseed production.In 1991-92, cotton was grown over about 2.836 million ha, with gl percent of this area in Punjab. Aphids; Wheat crop; Yield loss. It spends its entire year on cereals and grasses. Res., 2015, 53(2) 209 APHIDS (SCHIZAPHIS GRAMINUM R.) INFESTATION ON ... wheat in Faisalabad, Pakistan and Schizaphis graminum was the main species among them (5). After wheat, cotton occupies the largest area of all the crops in Pakistan. Aphids are important pests of cultivated crops in Pakistan. Due to the recent change in pattern of Rainfall in Pakistan aphids get back to the wheat crop and causes approximately 17-20% damage to the wheat yield. General Thresholds for Russian Wheat Aphid Season: Crop Stage: Treatment Threshold Level: Fall: Any growth stage: 10% - 20% damaged plants: Spring: Regrowth to Early Boot Early Boot to Flowering After Flowering : 5 - 10% damaged and infested tillers 10 - 20% damaged and infested tillers more than … A better knowledge of landscape scale spatial distribution of aphids and their natural enemies could be used to improve integrated pest management programs. Among others, natural population of predators and parasitoids fail to manage aphid population to acceptable limits. L.) is a major crop with largest area under cultivation in Pakistan and plays a significant role in economic stability of the country [1]. Aphid eggs hatch on a plant or tree in the spring (February-March) when the weather begins to warm. In the present study, the Bahawalpur is characterized by low humidity with drought stress. Its attack is more severe at reproductive and grain filling stages, thus causing a severe decline in crop yield and the quality of produce. Population of aphids has been increasing for the last few years on cereal crops and attaining the status of pest in Pakistan (Zia . The pest’s active period is February to October and inactive period is from December to January. (Termes obesus), Chrotogonus spp., Eurygaster integriceps Put., Sesamia inferens (Wlk. Insecticides for Control of Aphids in Wheat . Owing partly to the introduction of new fertilisers and high-yielding wheat varieties, insect pests have become a major factor limiting wheat production in Pakistan. The study was conducted to check the effect of aphid density on wheat crop and its yield. Khan, and Bahawalpur. Aphids are major pests of wheat crop in Pakistan inflicting considerable economic losses. All the remaining cultivars were highly susceptible to greenbug (DR ≻ 6). avenae are the major aphid species of wheat in Pakistan, which cause huge yield losses in wheat crop. These have become serious pests of wheat (Triticum aestivum L.) in Pakistan (Aheer et al., 2008) and yield losses are positively correlated with aphid populations (Riazuddin et al., 2004). Wheat aphids has assumed scary proportions in wheat cultivation in the Pakistan for the last few years. Introduction. Biotic and abiotic stresses are serious environmental constraints which reduce the yield of cereals across the globe.4, 5 During recent years, the Russian wheat aphids (black aphids) have emerged as a serious threat to wheat production in Pakistan. Aphid attacks the wheat crop in the mid of February, peaks in March and goes on till April. Abstract. There are about 92 species of aphids in Pakistan. Pests of Wheat Aphids: Aphids attack on wheat a little before the maturity stages of wheat and directly start eating the grains. NATURAL ENEMIES OF APHIDS ON WINTER WHEAT 507 (Fig. (2013) and Wains et al. 1C) in the … All of the hatched eggs develop into wingless females. The aphid originated from Russia and was first recorded in Kenya in 1995 according to the Kenya Agricultural and Livestock Research Organization (KALRO). 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