Germination behavior is one of the earliest phenotypes expressed by plants. This fact has
several consequences for the evolution of postgermination traits, ecological niches, and …

In the past few years, there has been a growing trend towards reducing tillage in cropping
systems to allow stubble retention, earlier planting and improved soil structure. However, the …

Avena sterilis L.(A. sterilis) and Avena ludoviciana Dur.(A. ludoviciana) are extremely
invasive weeds with strong competitive ability and multiple transmission routes. Both …

Field experiments were conducted in central Iowa to determine the growth of common
waterhemp emerging after postemergence herbicide applications in soybean. Common …

Differences in periodicity and depth of weed seedling recruitment due to agronomic
management practices, such as reduced tillage, have implications for weed competitive …

(1) A mathematical model for simulating the population dynamics of Avena sterilis ssp.
ludoviciana (Dur.) Nyman has been constructed using previously reported data. The model …

Background and Aims The date of emergence may have far-reaching implications for
seedling performance. Seedlings emerging early in the growing season often have a greater …

Historical records on the field emergence of seedlings of Avena sterilis in winter cereal crops
were used to develop thermal/hydrothermal models to predict the emergence of this weed …

Seed rain is the major input to populations of annual weeds. During the last decade data on
seed production have been published for several weed species that accurately reflect the …

Field studies were conducted at Rosemount, MN, in 1992 and 1993 to quantify the
demographic processes regulating the population dynamics of velvetleaf in soybean as part …