American Phytopathological Society Board & Staff. VIEW ABSTRACT | VIEW ARTICLE
Letter to the Editor
Buildup of a Pathogen Subpopulation Resistant to a Systemic Fungicide Under Various Control Strategies: A Flexible Simulation Model. Yehouda Levy, Rachel Levi, and Yigal Cohen. Pages 1475-1480. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Phytophthora Root and Crown Rot of Walnut Trees. S. M. Mircetich, M. E. Matheron. Pages 1481-1488. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Properties and Classification of a Potexvirus Isolated from Three Plant Species in Argentina. O. Gracia, R. Koenig, and D.-E. Lesemann. Pages 1488-1492. VIEW ABSTRACT | VIEW ARTICLE
Cytology and Histology
In Vitro Resistance of Embryos of Pinus taeda to Cronartium quercuum f. sp. fusiforme: Ultrastructure and Histology. D. J. Gray, H. V. Amerson. Pages 1492-1499. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Factors Affecting Spore Liberation by Cladosporium carpophilum. T. R. Gottwald. Pages 1500-1505. VIEW ABSTRACT | VIEW ARTICLE
Special Topics
A Comparison of Three Potyviruses by Direct Hybridization Analysis. B. B. Reddick, O. W. Barnett. Pages 1506-1510. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Periwinkle Wilt Bacterium: Axenic Culture, Pathogenicity, and Relationships to Other Gram-Negative, Xylem-Inhabiting Bacteria. M. J. Davis, B. C. Raju, R. H. Brlansky, R. F. Lee, L. W. Timmer, R. C. Norris, and R. E. McCoy. Pages 1510-1515. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Competition Between Metalaxyl-Resistant and -Sensitive Strains of Pseudoperonospora cubensis on Cucumber Plants. Yigal Cohen, Moshe Reuveni, and Yair Samoucha. Pages 1516-1520. VIEW ABSTRACT | VIEW ARTICLE
Disease Control and Pest Management
Reduction of Pseudomonas syringae pv. morsprunorum on Montmorency Sour Cherry with Copper and Dynamics of the Copper Residues. B. D. Olson, A. L. Jones. Pages 1520-1525. VIEW ABSTRACT | VIEW ARTICLE
Techniques
A 7-Day Recording Volumetric Spore Trap. David M. Gadoury, William E. MacHardy. Pages 1526-1531. VIEW ABSTRACT | VIEW ARTICLE
Techniques
Evaluation of Tetrazolium Bromide as a Vital Stain for Fungal Oospores. Elizabeth D. Sutherland, Sue D. Cohen. Pages 1532-1535. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Physicochemical Characterization of Maize Mosaic Virus. B. W. Falk, J. H. Tsai. Pages 1536-1539. VIEW ABSTRACT | VIEW ARTICLE
Techniques
Phloem-Limited Prokaryotes in Sieve Elements Isolated by Enzyme Treatment of Diseased Plant Tissues. I. -M. Lee, R. E. Davis. Pages 1540-1543. VIEW ABSTRACT | VIEW ARTICLE
Disease Control and Pest Management
Effect of Composted Sewage Sludge on Several Soilborne Pathogens and Diseases. R. D. Lumsden, J. A. Lewis, and P. D. Millner. Pages 1543-1548. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Colonization of Wheat Roots by a Fluorescent Pseudomonad Suppressive to Take-All. D. M. Weller. Pages 1548-1553. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Effects of a Necrosis-Inducing Isolate of Alfalfa Mosaic Virus on Stand Loss in Tomatoes. D. A. Knorr, F. F. Laemmlen, and W. O. Dawson. Pages 1554-1558. VIEW ABSTRACT | VIEW ARTICLE
Disease Detection and Losses
A Critical-Point Yield Loss Model for Cylindrocladium Black Rot of Peanut. J. K. Pataky, M. K. Beute, J. C. Wynne, and G. A. Carlson. Pages 1559-1563. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Pathogenicity and Host Specificity of Rhizoctonia solani Isolated from Carrots. M. P. Grisham, N. A. Anderson. Pages 1564-1569. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Identification of Double-Stranded RNAs Associated with Barley Yellow Dwarf Virus Infection of Oats. F. E. Gildow, M. E. Ballinger, and W. F. Rochow. Pages 1570-1572. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Introduction. S. P. Pennypacker. Page 1575. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Estimating Disease Severity of Single Plants. S. E. Lindow. Pages 1576-1581. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Coupling Pests to Crop Growth Simulators to Predict Yield Reductions. K. J. Boote, J. W. Jones, J. W. Mishoe, and R. D. Berger. Pages 1581-1587. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Estimating and Interpreting Disease Intensity and Loss in Commercial Fields. P. S. Teng. Pages 1587-1590. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Measuring and Modeling Crop Losses at the Field Level. L. V. Madden. Pages 1591-1596. VIEW ABSTRACT | VIEW ARTICLE
Symposium: Estimating Yield Reduction of Major Food Crops of the World
Global Crop Condition Assessment. James R. Hickman. Pages 1597-1600. VIEW ABSTRACT | VIEW ARTICLE
