Download or read book Comparative Growth Rates and Survival of the Russian Wheat Aphid Diuraphis Noxia and Other Diuraphis Species written by Alison Williams-Anderson and published by . This book was released on 1994 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Overwintering Ecology of the Russian Wheat Aphid Diuraphis Noxia Kurdjumov in Eastern Colorado written by Scott Curtis Merrill and published by . This book was released on 2007 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatially explicit RWA density models will enable management actions to be focused on locations and times when the risk of economic damage is high. Use of this research for forecasting spatially explicit RWA densities, as well as increasing knowledge on initial and boundary conditions, will facilitate directed scouting, precision agricultural techniques, and within-field management practices for control of RWA. Adoption of these practices and techniques has the potential to reduce pesticide inputs, allow for more judicious use of resistant cultivars (when they become available), increase natural enemy refuges, and reduce pesticide exposure to agricultural workers and consumers.

Download or read book A Synopsis of Information on the Russian Wheat Aphid Diuraphis Noxia Mordwilko written by Richard Douglas Hughes and published by . This book was released on 1996 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Studies with Russian Wheat Aphid Diuraphis Noxia Mordvilko in PI 294994 Bread Wheat Triticum Aestivum L written by Ahmed A. Elsiddig and published by . This book was released on 1992 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), is a widely distributed species in western north America, and a major economic pest of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). The objectives of this study were to : 1) determine the inheritance of seedling and adult plant resistances in a wheat line PI 294994 ; 2) establish whether greenhouse and field resistances were related ; 3) determine the effect of RWA infestation on the dry matter, grain yield, and harvest index in the crosses Moro/PI 294994 and Hyak/PI 294994 ; 4) determine whether there was a difference in the three traits between different genotypes due to RWA infestation ; and, 5) assess the degree of protection genetic resistance provided in the two crosses. The club wheat cultivars 'Moro' and 4Hyak' were crossed with PI 294994. Progenies from these two crosses were artificially infested with RWA in the field and the crosses were compared for their dry matter, grain yield, and harvest index. Plant reactions of F2 seedlings, F2 adult plants, and F3 seedlings indicated that both seedling and adult plant resistances are controlled by two genes with dominant and recessive mode of inheritance and that plant reactions in the field were the same as those in the greenhouse. Comparison of mean values of dry matter, grain yield, and harvest index showed that the three traits were affected by RWA infestation and genotype in both crosses. Resistant genotypes and noninfested population were comparable with respect to the three traits in Moro/PI 294994 but they were not in Hyak/PI 294994.

Download or read book Economic Thresholds and Injury Levels of Russian Wheat Aphid Diuraphis Noxia Homoptera Aphididae in Dryland Wheat and Barley in Eastern Washington State written by William Brian Kreowski and published by . This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in Host plant Resistance to Russian Wheat Aphid Diuraphis Noxia Kurdjumov written by Jonathan Robinson and published by . This book was released on 1993 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elucidation of Possible Virulence Factors Present in Russian Wheat Aphid Diuraphis Noxia Biotypes Saliva written by Rosetta Andrews Van Zyl and published by . This book was released on 2007 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Overwintering Biology of the Russian Wheat Aphid Diuraphis Noxia Mordvilko on the Northeastern Plains of Colorado written by John Scott Armstrong and published by . This book was released on 1994 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian Wheat Aphid Diuraphis Noxia written by Saskatchewan. Soils and Crops Branch and published by [Regina] : Saskatchewan Agriculture, Soils and Crops Branch. This book was released on 1988* with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Ecological Basis for the Field Performances of Two Exotic Parasites Hymenoptera Aphidiidae Et Aphelinidae of the Russian Wheat Aphid Diuraphis Noxia Mordwilko Homoptera Aphididae written by Julio Santos Bernal and published by . This book was released on 1995 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Synopsis of Information on the Russian Wheat Aphid Diuraphis Noxia Mordwilko written by Richard Douglas Hughes and published by . This book was released on 1988 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular and Genetic Basis of Resistance to Russian Wheat Aphid Diuraphis Noxia written by Vinod Sharma and published by . This book was released on 2005 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian Wheat Aphid Diuraphis Noxia Mordvilko written by Keith S. Pike and published by . This book was released on 1988 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Environment on the Expression of Russian Wheat Aphid Diuraphis Noxia Kurdjumov Resistance written by Robert Crowther Lindeque and published by . This book was released on 2008 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Variation Within and Between Russian Wheat Aphid Diuraphis Noxia Kurdjumov Biotypes Found in the United States written by Tracey Lee Payton and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Generalist Predation on the Russian Wheat Aphid Diuraphis Noxia Mordvilko Homoptera Aphididae written by Lauren M. Kerzicnik and published by . This book was released on 2002 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prospects for Biological Control of Russian Wheat Aphid Diuraphis Noxia written by C.A.B. International. Institute of Biological Control and published by . This book was released on 1988 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: