ISHS Acta Horticulturae 373: I International Congress on Almond
SURVEY OF MYCOFLORA INHABITING ALMOND FRUIT AND LEAVES IN CONVENTIONALLY AND ORGANICALLY FARMED ORCHARDS |
| Authors: | B.L. Teviotdale, L. Hendricks |
| DOI: | 10.17660/ActaHortic.1994.373.25 |
| Abstract:
Two adjacent commercial almond orchards, separated by a county road, were planted in 1978 with alternate rows of cultivars Carmel and Nonpareil. Beginning in 1983, cultural practices were changed to organic methods in one orchard but remained conventional in the other. Fungal and yeast populations on fruit and leaves were monitored from late bloom to just prior to hull split on cultivar Carmel almond trees in these two orchards in 1990, 1991, and 1992. Populations increased in number during the observation period and species present and population sizes were similar in the orchards but differed among years. Cladosporium was the most prevalent fungal genus found followed by Penicillium and Aspergillus. Other genera encountered were Alternaria, Botryosphaeria, Botrytis, Conyothyrium, Curvularia, Epicoccum, Fusarium, Mucor, Paecilomyces, Phoma, Rhizopus, Stemphyllium, Trichoderma, Ulocladium and several unidentified fungi. Yeasts comprised the largest populations in both orchards on fruit and leaves. Shot hole disease was more severe in the organically than in the conventionally farmed orchard but levels of almond scab infections of fruit and leaves were similar in the two orchards. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
