THE SEARCH FOR IMPROVED LIMA BEANS YIELDS: A STARTING POINT

Abstract

Delaware lima bean yields have averaged 1700 lbs per acre for the last 30 years. California averages 3500-4000 lbs per acre. Varieties M-15 and 1072 are used by both states for production. In an effort to increase lima bean yields in Delaware, the evaluation of the effect of weather events on plant development, the relationship of ethylene and abscission of reproductive structures, and the comparison of both California and Delaware lima bean production is being conducted. Preliminary observations of 1991 data show a difference in plant size and population between the two states. Although pods per plant are the same in both states, the number of pods per acre is greater in California. California yielded 4303 lbs. per acre and Delaware 1651 lbs. per acre. The average maximum and minimum temperatures in California was 92.7 and 60.7 degrees Fahrenheit respectfully compared to 83.1 degrees and 61.2 degrees Fahrenheit in Delaware.