Start Date: Oct 01, 2005
End Date: Sep 30, 2010
The commodities studied are peanut, cotton, and several vegetable crops, which are commonly grown in rotation in the southeastern coastal plain. The majority of the research will be conducted in the field; on research farms at the Coastal Plain Experiment Station and private farms which have specific weed infestations of interest. Greenhouse facilities will be fully utilized for evaluating weed seed survivability from various soil seedbanks. Growth chambers and thermal gradient germination tables will be used to evaluate base temperatures for weed seed germination, particularly tropical spiderwort. Data to be collected in these studies include weed population density, weed emergence patterns, weed growth parameters (plant height, plant width, flower number), weed fecundity, weed biomass (by species), crop growth parameters (crop height, crop canopy width, date of crop canopy closure), crop yield, and environmental factors (soil temperature, soil moisture, rainfall, photosynthetic active radiation within crop canopies). Results will be published in refereed journals, experiment station bulletins, and extension service bulletins.