Obituary
George Herbert Coons, 1885-1980. Dewey Stewart and Martha Kotila Roane. Page 1123. VIEW ABSTRACT | VIEW ARTICLE
Techniques
Open-Air Fumigation System for Investigating Sulfur Dioxide Effects on Crops. J. E. Miller, D. G. Sprugel, R. N. Muller, H. J. Smith, and P. B. Xerikos. Pages 1124-1128. VIEW ABSTRACT | VIEW ARTICLE
Special Topics
Sulfur Dioxide Effects on Yield and Seed Quality in Field-Grown Soybeans. D. G. Sprugel, J. E. Miller, R. N. Muller, H. J. Smith, and P. B. Xerikos. Pages 1129-1133. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
In Vitro Protein Polymerization by Quinones or Free Radicals Generated by Plant or Fungal Oxidative Enzymes. Gary F. Leatham, V. King, and Mark A. Stahmann. Pages 1134-1140. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Comparison of Six Geographic Sources of Loblolly Pine for Fusiform Rust Resistance. H. R. Powers, Jr., F. R. Matthews. Pages 1141-1143. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Comparative Pathogenicity and Host Ranges of Fusarium oxysporum Isolates Causing Crown and Root Rot of Greenhouse and Field-Grown Tomatoes in North America and Japan. Randall C. Rowe. Pages 1143-1148. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Influence of the Pathogen on Disease Severity in Stemphylium Leafspot of Alfalfa in California. W. A. Cowling, D. G. Gilchrist. Pages 1148-1153. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effect of Temperature and Moisture Tension on Growth, Sclerotial Production, Germination, and Infection by Sclerotinia minor. E. D. Imolehin, R. G. Grogan, and J. M. Duniway. Pages 1153-1157. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effects of Oxygen, Carbon Dioxide, and Ethylene on Growth, Sclerotial Production, Germination, and Infection by Sclerotinia minor. E. D. Imolehin, R. G. Grogan. Pages 1158-1161. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Factors Affecting Survival of Sclerotia, and Effects of Inoculum Density, Relative Position, and Distance of Sclerotia from the Host on Infection of Lettuce by Sclerotinia minor. E. D. Imolehin, R. G. Grogan. Pages 1162-1167. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Trichoderma hamatum Effects on Seed and Seedling Disease Induced in Radish and Pea by Pythium spp. or Rhizoctonia solani. G. E. Harman, I. Chet, and R. Baker. Pages 1167-1172. VIEW ABSTRACT | VIEW ARTICLE
Disease Control and Pest Management
Fitness of Venturia pirina Isolates Resistant to Benzimidazole Fungicides. E. Shabi, Talma Katan. Pages 1172-1174. VIEW ABSTRACT | VIEW ARTICLE
Disease Control and Pest Management
Efficacy of Two New Systemic Fungicides and Ethazole for Control of Phytophthora Root Rot of Rhododendron, and Spread of Phytophthora cinnamomi in Propagation Benches. L. Englander, J. A. Merlino, and J. J. McGuire. Pages 1175-1179. VIEW ABSTRACT | VIEW ARTICLE
Techniques
Probits for Analyzing Latent Period Data in Studies of Slow Rusting Resistance. Gregory Shaner. Pages 1179-1182. VIEW ABSTRACT | VIEW ARTICLE
Resistance
New Sources of Slow Leaf Rusting Resistance in Wheat. Gregory Shaner, Robert E. Finney. Pages 1183-1186. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
The Role of Sporangia in the Epidemiology of Pearl Millet Downy Mildew. S. D. Singh, R. J. Williams. Pages 1187-1190. VIEW ABSTRACT | VIEW ARTICLE
Etiology
Effects of Benomyl and Ribavirin on the Lettuce Big Vein Agent and its Transmission. R. N. Campbell. Pages 1190-1192. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Twelve Pyrenophora trichostoma Races for Virulence to Wheat in the Central Plains of North America. Wilmar Cório da Luz, R. M. Hosford, Jr.. Pages 1193-1196. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effects of Phosphorus and Potassium Fertilization on Septoria Glume Blotch of Wheat. B. M. Cunfer, J. T. Touchton, and J. W. Johnson. Pages 1196-1199. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effect of Nontreated Field Soil on Sporulation of Vesicular-Arbuscular Mycorrhizal Fungi Associated with Soybean. J. P. Ross. Pages 1200-1205. VIEW ABSTRACT | VIEW ARTICLE
Cytology and Histology
Mode of Infection and Early Colonization of Slash Pine Seedlings by Cronartium quercuum f. sp. fusiforme. Thomas Miller, Robert F. Patton, and Harry R. Powers, Jr.. Pages 1206-1208. VIEW ABSTRACT | VIEW ARTICLE
Disease Control and Pest Management
Suppression of the Apple Collar Rot Pathogen in Composted Hardwood Bark. D. E. Spring, M. A. Ellis, R. A. Spotts, H. A. J. Hoitink, and A. F. Schmitthenner. Pages 1209-1212. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Effect of Exchangeable Soil Aluminum and Alkaline Calcium Salts on the Pathogenicity and Growth of Phytophthora capsici from Green Pepper. J. J. Muchovej, L. A. Maffia, and Rosa M. C. Muchovej. Pages 1212-1214. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Influence of Root Biomass on Number of Pratylenchus penetrans Within Host Roots. B. A. Jaffee. Pages 1214-1216. VIEW ABSTRACT | VIEW ARTICLE
Physiology and Biochemistry
Revised Estimates of the Molecular Weights of dsRNA Segments in Hypovirulent Strains of Endothia parasitica. J. A. Dodds. Pages 1217-1220. VIEW ABSTRACT | VIEW ARTICLE
Ecology and Epidemiology
Predisposition of Bean Roots to Attack by the Pea Pathogen, Fusarium solani f. sp. pisi, Due to Temporary Oxygen Stress. D. E. Miller, D. W. Burke, and J. M. Kraft. Pages 1221-1224. VIEW ABSTRACT | VIEW ARTICLE
Resistance
Apparent Infection Rates of Pyricularia oryzae on Different Rice Cultivars. R. L. Villareal, D. R. MacKenzie, R. R. Nelson, and W. R. Coffman. Pages 1224-1226. VIEW ABSTRACT | VIEW ARTICLE
