Dr. Todd Wehner presents 'Breeding for High Yield in Cucumber at NC State'. Cucumber is one of the most important vegetables in the world. It is used fresh, pickled or as ingredients in cosmetics. Forty years ago, we started working on optimizing cucumber breeding programs to help our colleagues to be more efficient. Some of the questions we attempted to answer included: optimum plot size, optimum experiment size (number of years, locations, seasons, and replications needed), the importance of genotype x environment interaction on yield, the need for side borders and end borders in trials, methods for measuring yield (fruit value, weight and count), and how to measure the yield of all-male (fruitless) cultivars.