Phytopathology (1996) 86, p. S53 (Kim et al.)

K.D. Kim, S. Nemec and G. Musson (1996)
Effects of composts and soil amendments on soil microflora and Phytophthora stem rot on pepper
Phytopathology 86 (11 suppl.), S53-S53
Abstract: Three research field plots were established at Boynton Beach, Florida in 1994-1995, to evaluate various composts and soil amendments incorporated into the top 20 cm of beds for control of Phytophthora stem rot of pepper caused by Phytophthora capsici. Soil populations of 5 microbial functional groups and total microbial activity, measure by fluorescein diacetate hydrolysis analysis were monitored. Plots were treated with one of the following: chitosan, crab shell waste, humate, municipal solid waste, perennial peanuts, seed peanuts, sewage sludge-yard trimmings (SY), wood chips, and untreated plots served as controls. Two plantings (Sept. and Nov. 1995) of cv. Boynton Belle were evaluated in each plot. Chitosan (0.2% solution) reduced disease incident and severity (P = 0.05) on Oct. 30, 1995 and crab shell (1335 kg ha^-1) reduced disease severity (P=0.1) on Jan. 12, 1996 compared to controls in one plot. Perennial peanuts reduced disease incidence and severity of Phytophthora stem rot (P = 0,1) on Oct, 30, 1995 in another plot. Several treatments, especially SY and wood chips, increased the total microbial activity and soil populations of certain microbial functional groups, some of which were negatively correlated with disease incidence and severity.
Database assignments for author(s): Ki Deok Kim

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytophthora capsici	Green pepper/chilli (Capsicum)	U.S.A. (SE)