Montana State University, Department of Entomology, 333 Leon Johnson Hall, P.O. Box 173020, Bozeman, Montana 59717, United States of America Nansen et al. 214 Abstract—The wheat stem sawfly, Cephus cinctus Norton, is a major insect pest in dryland wheat (Triticum L. spp.; Poaceae) fields in the northern Great Plains of the United States and in southern regions of the prairie provinces of Canada...

Byamukama, E., Seifers, D. L., Hein, G. L., De Wolf, E., Tisserat, N. A., Langham, M. A. C., Osborne, L. E., Timmerman, A., and Wegulo, S. N. 2013. Occurrence and distribution of Triticum mosaic virus in the central Great Plains. Plant Dis. 97:21-29. Wheat curl mite (WCM)-transmitted viruses—namely, Wheat streak mosaic virus (WSMV), Triticum mosaic virus (TriMV), and the High Plains virus (HPV)...

The objective of this study was to determine relationship between high resolution satellite image and wheat N status, and develop a methodology to predict wheat N status in the farmers’ fields. Field experiment with 5 different N rates was conducted in Huimin County in the North China Plain, and farmers’ fields in 3 separated sites were selected as validation plots. The IKONOS image covering al...

After comparing the persistence of four marking techniques, a mark–release–resight study was performed to characterize mid-season movement of the Colorado potato beetle [Leptinotarsa decemlineata (Say); Col., Chrysomelidae] simultaneously in a fallow and in a wheat field. Isolated patches of potatoes were installed in a random spatial arrangement on both fields similarly. Overwintered beetles w...

in recent years, symptoms of a viral disease including streak mosaic, leaf blade malformation, and thickness (scrawniness) of raceme have been observed in the vast areas of grain fields in golestan province. in order to identify the causes of this disease, detection of wheat streak mosaic virus (wsmv) in cultivated hosts including wheat, dominant weeds of fields involving barnyardgrass (echinoc...

the effects of land use, crop type and crop management on soil fauna were investigated with survey of four habitats in jajarm. the habitats included rangelands, alfalfa (medicago sativa l.) fields and low-input and high-input of wheat (triticum aestivum l.) fields, each with four sample units. in each sample unit, the macrofauna collected with pitfall traps, sorted and counted in terms of famil...

Heterodera avenae is widely distributed in the western United States, where most wheat is grown in non-irrigated winter wheat/summer fallow rotations in low rainfall regions. Economic and social pressures have motivated growers to pursue a transition from winter wheat/summer fallow rotation to no-till annual spring cereals. Annual cereals are also planted in some irrigated fields. The impact of...

The fungicides used to control diseases in cereal production can have adverse effects on non-target fungi, with possible consequences for plant health and productivity. This study examined fungicide effects on fungal communities on winter wheat leaves in two areas of Sweden. High-throughput 454 sequencing of the fungal ITS2 region yielded 235 operational taxonomic units (OTUs) at the species le...