Published online by Cambridge University Press: 12 June 2017
Germinable seeds were non-existent below 4 inches in the undisturbed soils used for cranberry bed development. Seeds were found at greater depths in manipulated soils. The seed in the vines used for planting was a major factor in the infestation of a properly scalped bed. Movement of seeds in water caused an infestation of a weed-free bed. The highest movement of seeds per acre-inch of water flow occurred in September, next highest in October and third highest in April. A relatively weed-free planting was maintained through one season by fumigating the soil for seed eradication, erecting a fine mesh screen exclosure to prevent weed invasion by flood water, and washing the vines prior to planting.