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The effects of a pesticide program on non-target epiphytic microbial populations of apple leaves.
Numbers of antagonists to foliar pathogens of apple which may occur as part of the natural epiphytic microbial community may be reduced by current pesticide programs and hence have possible implications for the development of biological approaches to integrated control strategies. Expand
Microbial populations associated with buds and young leaves of apple
Apple buds and developing leaves and floral parts were assessed for microbial populations by a washing procedure and scanning electron microscopy at six stages ranging from dormancy through early tight cluster, suggesting that few microorganisms were associated with floral and leaf primordia. Expand
Microbial degradation of fluometuron is influenced by roundup weatherMAX.
- S. Lancaster, R. Haney, S. Senseman, C. M. Kenerley, F. Hons
- Biology, Medicine
- Journal of agricultural and food chemistry
- 24 September 2008
The addition of glyphosate with fluometuron increased C-mineralization and increased the rate of fluometricuron degradation relative tofluometuron applied alone, however, more fluometron remained in the media and less fungal biomass was produced when glyphosate was included. Expand
Populations of fungi associated with sclerotia of Phymatotrichum omnivorum buried in Houston black clay
Sclerotia of Phymatotrichum omnivorum were buried in nylon bags at a depth of 45 cm in Houston black clay at three sites in Temple, Texas and total number of species and species diversity were significantly higher at the rotation site than at the prairie or cotton site. Expand
Sclerotial formation and strand growth of Phymatotrichopsis omnivora in minirhizotrons planted with cotton at different soil water potentials
Strand growth was greater in soils subject to decreasing levels of soil matric potential (high water stress) compared with a continuously wet treatment, and sclerotia were recovered in larger numbers from experimental units in which high water potentials occurred 2 weeks prior to and following the death of host plants. Expand
Root colonization by Phymatotrichum omnivorum and symptom expression of Phymatotrichum root rot in cotton in relation to planting date, soil temperature and soil water potential
Cotton was grown in containers of soil with sclerotia of Phymatotrichum omnivorum. Plants were grown for 3 weeks in the greenhouse and then transferred to field plots. Foliar and stem symptoms of… Expand
Visual and Infrared Assessment of Root Colonization of Apple Trees by Phymatotrichopsis omnivora.
Root systems of 5-year-old, trellised apple trees were assessed for the presence of fungal strands of Phymatotrichopsis omnivora Hennebert in two orchards in central Texas and trees were shown to have extensive taproot decay and infection of lateral roots before canopy symptoms began to develop. Expand
Spatial dynamics of Phymatotrichum root rot in row crops in the Blackland region of North Central Texas.
Positional variation in phylloplane microbial populations within an apple tree canopy
Variation in density of epiphytic yeasts, filamentous fungi, and bacteria on apple leaves collected from eight trees at nine dates for two seasons was determined with respect to three positional… Expand