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Effects Of Safflower (A Spring Crop), And Wheat Planting Date On Controlling Jointed Goatgrass (Aegilops Cylindrica) In Winter Wheat, Caleb Dale Dalley
Effects Of Safflower (A Spring Crop), And Wheat Planting Date On Controlling Jointed Goatgrass (Aegilops Cylindrica) In Winter Wheat, Caleb Dale Dalley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
To improve management and control of jointed goatgrass (Aegilops cylindrica Host.) on traditional winter wheat (Triticum aestivum L.) cropland, a better understanding of the effects spring crop and wheat planting date have on weed populations and wheat yield is needed. A study of the effects of safflower (a spring crop) and wheat planting dates (early vs late) was conducted over a 2-yr period. Long term effects will be examined over a 5-yr period. The effects these treatments had on yield, weed seed contamination, jointed goatgrass population density, and soil seedbank concentration were measured. Two identical experiments were initiated, …
A Genetic Investigation Of A Yellow Plant Color Characteristic In Winter Wheat, John Oscar Evans
A Genetic Investigation Of A Yellow Plant Color Characteristic In Winter Wheat, John Oscar Evans
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The objective in wheat hybridization primarily is to obtain new varieties which are of a greater agronomic value than existing varieties. Frequently, however, crosses which obviously will not produce superior commercial types are made and studied in order to obtain genetic information which may be useful to the breeder. This latter phase of breeding, i.e., the accumulation of genetic information, provides the basis for this study.
Viability Of Seed Produced By Annual Weeds And Winter Wheat Treated With Herbicides, J. Wayne Whitworth
Viability Of Seed Produced By Annual Weeds And Winter Wheat Treated With Herbicides, J. Wayne Whitworth
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Large sums of money are spent annually for herbicides to control weeds in fall sown wheat. Many of these weeds are killed by such treatments while others survive and mature seed. Viability of seeds produced by weeds injured by systemic or growth regulator type herbicides has long been a matter of great interest, much speculation, and very little research. Data on this subject are needed in order to intelligently use chemicals for weed control.