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Creator:: Yahyaoui, Amor
Abstract:: With the development of new selective herbicides and the frequent change in commercial wheat cultivars, information is needed as to the possible interaction between cultivars and herbicides. The responses of five genotypically diverse wheat cultivars (Bezostaya, Daws, Maris Hobbit, Stephens and Yamhill) to diuron [3-(3,4-dichloropheny1)-1,1- dimethylurea], diclofop methyl 2-[4-(2,4-dichlorophenoxy)phenoxy] propanoate...
Resource Type:: Masters Thesis
Full Text:: . Thanks are extended to Dr. Willis L. McCuistion, Dr. W. E. Kronstad, Dr. A. P. Appleby, Dr. R. Petersen

Creator:: Marciniak, Michael E.
Abstract:: Visual selection for grain yield may be a limiting factor in identifying superior yielding genotypes in a breeding program. This investigation was conducted (1) to compare the effectiveness of visual selection for grain yield by three selector groups representing different levels of plant breeding experience, and (2) to examine the...
Resource Type:: Masters Thesis
Full Text:: , Roger Petersen, and Mary Duryea for serving on my graduate committee. Thanks are extended to Dr. Fred

Creator:: Ekse, Ali Osman
Abstract:: Three chemicals SD 55446, SD 55447 and WL 84245 were found to induce male sterility in cultivars of wheat or triticale. Both SD 55446 and SD 55447 when applied at a concentration of 0.896 kg/ha resulted in 90% male sterility. However, SD 55447 caused female sterility at the same concentration...
Resource Type:: Masters Thesis
Full Text:: . I wish to express my special thanks to Dr. Roger G. Petersen for his assistance in the analyses of

Creator:: Roberts, Michael C. (Michael Coy), 1951-
Abstract:: Farmers and researchers are aware of spatial variation in grain yield within farms or fields. Fertilizer management may be improved if techniques can be developed to identify grain yield variations in wheat fields. Aerial color infrared (CIR) photography was used to identify winter wheat (Triticum aestivum L.) canopy biomass variability...
Resource Type:: Masters Thesis
Full Text:: heterogeneity. Field plot design attempts to remove soil effects from treatment effects by blocking (Petersen

Creator:: Sullivan, Dan M. (Dan Matthew), 1954-
Resource Type:: Masters Thesis
Full Text:: show little differ- ence in P concentration. Whitney and Petersen (unpublished data, Kansas State

Creator:: Agamennoni, Raul Jose
Abstract:: Dryland winter wheat in eastern Oregon is usually subjected to water stress several times during the growing period. Moreover, the last three months of growth period depend strongly on the available soil water. The fertility level, stage of growth, availability of soil water and climatic conditions all interact to determine...
Resource Type:: Masters Thesis
Full Text:: . Moss, Dr. David G. Neiss, and Dr. Roger G. Petersen. Sincere appreciation for the help and friendship

Creator:: Nadjib, Benacef
Abstract:: Four winter wheat cultivars, Bezostaya, Maris-Hobbit, Roussalka and Stephens, selected on the basis of the diversity of their pedigree and phenotype, were planted at Hyslop Experiment Station near Corvallis in Western Oregon to study their performance at three different row spacings (10, 16 and 24 cm), three seeding rates (100,...
Resource Type:: Masters Thesis
Full Text:: Dr. Roger G. Petersen for his help in the statistical analysis of this study. The author wants to

Creator:: Caputo, John Anthony
Abstract:: Nitrogen deficiency during the winter where winter wheat (Triticum aestivum L.) follows wheat and large amounts of straw have been plowed down has been a factor limiting yield in the Willamette Valley of western Oregon. Field experiments were established to determine if an application of N on the stubble or...
Resource Type:: Masters Thesis
Full Text:: requirements of the decomposing microorganisms (Allison, 1955; Smith and Petersen, 1982). Wheat straw ranges

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