Reynolds, K. M., Madden, L. V., Reichard, D. L., and Ellis, M. A. 1989. Splash dispersal of Phytophthora cactorum from infected strawberry fruit by simulated canopy drip. Phytopathology 79:425-432. Characteristics of splash dispersal of Phytophthora cactorum from responses 5 and 6. Except for droplets produced by the impact of I-mminfected strawberry fruit were studied with an integrated drop-generating diameter drops, the average diameter of droplets carrying sporangia was and photographic system that was developed previously. Drops of 1- to always significantly greater than the diameter of droplets not carrying 4-mm diameter were released from heights of 10, 20, and 40 cm above fruit sporangia (P < 0.05). The distribution of the number of sporangia per bearing sporangia that had been labeled with a fluorescent tracer. Splash droplet was generally well described by the logarithmic distribution with droplets produced by the impact of the incident drops were collected on zeros for each combination of incident drop diameter and height of release. sheets of water-sensitive paper. Drops with diameters of 1 and 2 mm failed The X parameter, representing the proportion of droplets with sporangia, to produce any splash droplets when released from heights of 20 and 10 cm, declined in relation to momentum at impact. The 0 parameter, a measure of respectively. Multivariate regression analysis was used to examine the the mean number of sporangia per droplet (of droplets bearing sporangia), relationship between a set of intercorrelated responses and attributes of the declined with increasing mass of the incident drop. There was no relation incident drop. Responses evaluated were 1) the total number of droplets between droplet size and the number of sporangia per droplet. For all collected, 2) the average droplet diameter, 3) the total droplet volume, splash droplets and those with sporangia, the distribution over distance was 4) the mean distance of droplet travel, 5) the number of droplets bearing at accurately described by the Weibull distribution whose scale parameter least one sporangium, and 6) the total number of sporangia among droplets (representing the distance within which 63% of the droplets landed) varied with at least one sporangium. Incident drop attributes were drop mass or linearly and positively with incident drop velocity. The Weibull shape weight (W) and the velocity (V), momentum (M), and kinetic energy (E) of parameter (representing curve skewness) was best described as a function of the drop at impact with the fruit surface. The best multivariate regression both drop velocity and kinetic energy or momentum. Droplets with model included W, M, and Vas predictors of responses 1, 2, and 4. Malone sporangia did not travel as far, on the average, as droplets without was the best predictor of response 3; in contrast, Vwas significant alone for sporangia.