Spring Emergence and Seasonal Infestation of the Alfalfa Seed Chalcid, Bruchophagus Roddi Gussakovs Ii, in Oklahoma.
Abstract
Several studies were conducted to gather information of the life cycle of the alfalfa seed chalcid <ASCl as it occurs in Oklahoma. The first study examined the spring emergence of the ASC using seed obtained from various locat1ons in Oklahoma. The second study examined the adult field populations using field samples. The third study examined the seasonal infestation in alfalfa seeds at weekly intervals. Early season alfalfa seed crops avoided pea populat1ons densit1es of ASC and had low percentages of ASC damaged seed and low percentages of ASC that entered diapause. Late season seed crops had higher percentages of ASC damaged seed and percentages of ASC that entered di apause.
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- OSU Theses [15752]