Effect of aphid species infestation on wheat crop, Triticum aestivum L. and its yield.

Among cereal crops, wheat (Triticum aestivum L.) is an important staple food for human. Rhopalosiphum maidis, Rhopalosiphum padi, Schizaphis graminum and Sitobian avenae are the major aphid species of wheat in Pakistan, which cause huge yield losses in wheat crop. The study was conducted to check the effect of aphid density on wheat crop and its yield. Our observation was made from heading to early-dough stage. Mean spike length, number of grains per spike, 100 grains weight and yield kg/ha was significantly affected by the population density of an aphids. Aphid density was low correlated with mean spike length but it was significantly correlated with number of grains per spike, 100 grains weight and yield kg per hectare.

[1]  Muhammad Waqar Hassan.  Comparison of wheat varieties (Triticum aestivum L.) for aphid (Homoptera: Aphididae) infestation in relation to physico-morphic traits sown under semi arid climatic conditions , 2017 .

[2]  M. Shahbaz,et al.  INTERACTIVE EFFECT OF FOLIAR APPLICATION OF NITRIC OXIDE (NO) AND SALINITY ON WHEAT (TRITICUM AESTIVUM L.) , 2013 .

[3]  Amjad Ali,et al.  Abiotic factors effect on population fluctuation of alate aphids in wheat , 2008 .

[4]  G. Kuroli.  Aphid flight and change in abundance of winter wheat pests , 2000 .

[5]  M. H. Leghari,et al.  IMPACT OF WHEAT PLANT PHENOLOGY ON THE DEVELOPMENT OF GREENBUG, SCHIZAPHISGRAMINUM (RONDANI) , 1999 .

[6]  W. Riedell.  Tolerance of wheat to Russian wheat aphids: Nitrogen fertilization reduces yield loss , 1990 .

[7]  C. Xiong.  Study on the relationship between the occurrence of Rhopalosiphum padi (L.) and the growing period of wheat. , 1990 .

[8]  V. Kushnerik,et al.  Population dynamics of cereal leaf aphids on winter wheat. , 1990 .

[9]  Karimullah,et al.  Incidence of the cereal aphid, Sitobion avenae (F.) on different cultivars of wheat , 1989 .

[10]  R. Rabbinge,et al.  Yield loss due to cereal aphids and powdery mildew in winter wheat , 1984 .

[11]  P. Vereijken.  Feeding and multiplication of three cereal aphid species and their effect on yield of winter wheat , 1979 .

[12]  D. Glawe,et al.  Compendium of Wheat Diseases , 1991 .

[13]  R. Bardner,et al.  Insect infestations and their effects on the growth and yield of field crops: a review , 1974 .

[14]  V. Stern.  Control of Aphids Attacking Barley and Analysis of Yield Increases in the Imperial Valley, California , 1967 .