Soybean rust

"Asian soybean rust is a serious foliage disease that has the potential to cause significant soybean yield losses. Although Asian soybean rust was identified on soybean plants in Hawaii in 1994, the disease was not reported in the continental United States until the fall of 2004. The U.S. Department of Agriculture (USDA) released an official notice of the confirmation of soybean rust on soybean leaf samples collected in Louisiana on November 10, 2004. Over the next few weeks the fungus was detected on plants from a number of additional states, including Missouri. Now that Asian soybean rust has been found in the continental United States, it is critical that anyone involved in soybean production be familiar with the disease and its identification and management."--Page 1.Laura E. Sweets (Department of Plant Microbiology and Pathology and Commercial Agriculture Program), J. Allen Wrather (Department of Plant Microbiology and Pathology, Delta Research Center), Simeon Wright (Plant Diagnostic Clinic)New 12/04/15MIncludes bibliographical reference

Extension Programs Increased Missouri Cotton Farmer Use of Survey-Based Pest Management

In 1982, only 5% of Missouri cotton farmers surveyed fields for pests and used this information when selecting pest management strategies, i.e., survey based pest management (SBPM). University of Missouri faculty initiated a program that year to instruct farmers about the benefits of SBPM. They provided instruction from 1982 to 1999. During 1999, 3% of Missouri cotton farmers were surveyed by phone for their use of SBPM. That year, farmers used SBPM to protect 82% of Missouri cotton acres. In addition to better yields, the use of SBPM ensured more efficient use of all pest management strategies

Proceedings of the 17th Annual Meeting, Southern Soybean Disease Workers (March 20-22, 1990, Biloxi, Mississippi): Soybean Disease Control at a Crossroad

Contents Southern Soybean Disease Workers Officers 1989-1990 Southern Soybean Disease Workers Program Committee 1989-1990 Southern Soybean Disease Workers Committee Chairmen 1989-1990 General session Presidential address. B Gazaway Keynote address. K Smith Invited speakers Future Impacts of Biotechnology on Soybean Production and Uses. X Delannay Diseases of Soybean Associated with International Seed Trade. B Moore Impact of Regulatory Change and GLP\u27s on New Fungicide Discovery and Development. G Hammes Graduate student papers Double-Stranded RNA and Virus-Like Particles From the Soybean Stem canker Pathogen, Diaporthe phaseolorum var. caulivora. Y Lee, JP Snow, GT Berggren, and RA Valverde Development of Soybean Varieties Resistant to Phomopsis Seed Decay. MS Zimmerman and HC Minor Cloning of the vir Region of Agrobacterium tumefaciens Chry 5, a Strain Highly Virulent on Soybean. LG Kovacs, JA Wrather, and SG Pueppke Role of Overwintering Bean Leaf Beetle in the Epidemiology of Bean Pod Mottle Virus in Soybeans in Kentucky. JR dosAnjos, SA Ghabinal, DE Hershman, and DW Johnson Contributed papers SSDW soybean Disease Loss Estimates G Sciumbato Effects of Amino Acid Biosynthesis Inhibiting Herbicides on in vitro Growth and Development of Calonectria crotalariae. DK Berner, GT Berggren, and JP Snow Infection Cushion Formation by Rhizoctonia solani on Soybean Leaves. CS Kousik, JP Snow, and GT Berggren Is Stem Canker Monocyclic? KV SubbaRao, JP Snow, and GT Berggren Early-season Fungicide Sprays for Soybean Stem Canker Control. AY Chambers SSDW business session Treasurer\u27s report, 1989. G Hammes Contributed paper session Effect of Frogeye Leaf Spot on Soybeans in Florida. FM Shakes and CK Hiebsch Comparison of Application Timing of Two Foliar Fungicides for Control of Soybean Diseases. JC Rupe and MJ Cochran Performance of Soybean Lines under Stress Due to Brown Stem Rot, Soybean Cyst Nematode, and Iron Deficiency Chlorosis. LM Mansur, H Tachibana, and K Bidne Performance of Soybean Cultivars in Cyst and Peanut Root-Knot Nematode Infested Fields. CE Drye, DK Barefield, ER Shipe, and JD Mueller Yield of Aldicarb Treated Nematode Resistant and Susceptible Soybean Varieties. CE Drye, ER Garner, and JD Mueller Distribution, Races, and Effects of Soybean Cyst Nematode in Missouri. TL Niblack and GS Smith Performance of Selected Nematicides in a Field Infested with Root-Knot and Cyst Nematodes. RW Young, R Rodríguez-Kábana, and EL Carden Performance of Selected Soybean Cultivars in a Field Infested with Meloidogyne arenaria and Heterodera glycines. DG Robertson, R Rodríguez-Kábana, D Weaver, and EL Carden Sorghum-Soybean Rotation for the Management of Root-Knot and Cyst Nematodes: Long Term Effects. CF Weaver, R Rodríguez-Kábana, DB Weaver, and EL Carden Bahiagrass-Soybean Rotation for the Management of Root-Knot and Cyst Nematodes: Long Term Effects. PS King, R Rodríguez-Kábana, DB Weaver, and EL Carden Peanut-Soybean Rotations for the Management of Meloidogyne arenaria. R Rodríguez-Kábana, and DG Robertson Field Evaluation of Polyspecific Nematode Resistance in Soybean. DB Weaver, R Rodríguez-Kábana, and EL Carden Long Term Effects of Selected Rotations with Soybeans and Corn on Populations of Meloidogyne arenaria. R Rodríguez-Kábana, and D.G. Robertson Histopathology of Soybean Roots Inoculated with Fusariurn solani and Heterodera glycines. KS McLean, KW Roy and GW Lawrence. The opinions expressed by the participants at this conference are their own and do not necessarily represent the views of the southern Soybean Disease Workers (SSDW). Text, references, figures, and tables are reproduced essentially as they were supplied by the author(s) of each paper. Mention of pesticides does not constitute a recommendation for use, nor does it imply that the pesticides are registered under the Federal Insecticide, Fungicide, and Rodenticide Act as · amended. The use of trade names in this publication does not constitute a guarantee, warranty, or endorsement of the products by SSDW

Proceedings of the 19th Annual Meeting, Southern Soybean Disease Workers (February 19-20, 1992, St. Louis, Missouri)

Contents Southern Soybean Disease Workers 1991-1992 officers 1991-1992 Program Committee Graduate student competition Interactions of Macrophomina phaseolina with two soybean cultivars under four irrigation regimes. SR Kendig and JC Rupe Influence of soybean planting dates on the incidence and severity of Sudden Death Syndrome. SS Alghamdi, PT Gibson, and MA Shenaut The interrelationship of Heterodera glycines and Fusarium solani in sudden death syndrome of soybean. KS McLean and GW Lawrence Frogeye leaf spot of soybean: evaluation of cultivars and isolates. PF Pace, DB Weaver, and LD Ploper Soybean cyst nematode race symposium SCN race scheme: a historical perspective. JA Fox Races of Heterodera glycines: a nematological perspective. TL Niblack Races of Heterodera glycines and level of resistance in soybean cultivars. SC Anand Differentiating soybean responses to soybean cyst nematode races. DP Schmitt and JG Shannon Strategies for improved soybean yields and profits in the Southern US. JH Palmer Contributed papers Evaluation of resistance to Rhizoctonia Foliar Blight of soybean. CS Kousik, GB Padgett, JP Snow, and BG Harville Five years of soybean variety testing for SDS response. PT Gibson, M Schmidt, MA Shenaut, and O Myers, Jr Effect of tillage, planting date, and cultivar on the severity of sudden death syndrome, Septoria brown spot and downy mildew of soybean. JA Wrather, TL Niblack, GS Smith, and SC Anand Effect sof soybean planting date on severity of stem canker. AY Chambers Comparative virulence of stem canker isolates from southern soybean growing areas. GL Sciumbato and BL Keeling Effects of a low rate of aldicarb on soybean canopy development and yield, weed and insect populations in Heterodera glycines-infested fields. SR Koenning, KR Barker, HD Coble, and JR Bradley Effect of soybean cyst nematode on soybean isolines differing for maturity. WJ Wiebold and TL Niblack Effect of repeated application of selected herbicides and nematicides/insecticides on soybean cyst nematode density. P Donald, A Keaster, R Kremer, and B Sims Southern United States soybean disease loss estimate for 1991. Southern Soybean Disease Workers, Soybean Disease Loss Estimate Committee. Compiled by GL Sciumbato and DL Turnage SSDW Treasurer\u27s report. GG Hammes Southern Soybean Disease Workers 1990-1991 committee chairmen Southern Soybean Disease Workers 1991 award recipients Proceedings of the Southern Soybean Disease Workers is published annually by the Southern Soybean Disease Workers. Text, references, figures, and tables are reproduced as they were submitted by the author(s). The opinions expressed by the participants at this conference are their own and do not necessarily represent the views of the Southern Soybean Disease Workers. Mention of trademark or propriety product in this Proceedings does not constitute a guarantee, warranty, of endorsement of that product by the Southern Soybean Disease Workers

Rice diseases

"Diseases cause rice crop yield reductions in Missouri each year. No estimates of the impact of these diseases on rice production are available; however, any loss is too much. Crop loss due to disease can be minimized by following certain preventative measures (See General Control Measures). The best disease control practice often is dependent upon specific diseases in the crop. It is, therefore, beneficial to identify rice diseases for efficient use of control practices."--First page.J. Allen Wrather and Einar W. Palm (Department of Plant Pathology, College of Agriculture), Joseph H. Scott (Department of Agronomy, College of Agriculture)New 2/82/7

Proceedings of the 34th Annual Meeting of the Southern Soybean Disease Workers (February 18-19, 2007, St. Louis, Missouri)

Southern United States Soybean Disease Loss Estimates for 2006. SR Koenning Stratego 250 EC, Broad Spectrum Disease Control in Soybeans. JR Bloomberg, RA Myers, and R Kraus Asian Soybean Rust: Efficacy of Selected Fungicides and Observations on Their Use. RW Schneider, CL Clark, EP Mumma, and CG Giles Effects of Light Intensity and Darkness Period on Infection of Soybean Rust in Controlled Conditions. J Mo, T Guo, X Li, and XB Yang Identification of Maturity Group 3 and 4 Soybean Cultivars and Lines Resistant to Cercospora sojina by Field Screening and Molecular Markers. A Wrather, R Mian, G Shannon, J Bond, M Newman, and W Wiebold Phytophthora Resistance of Soybean Germplasm with High Potential for Asian Soybean Rust Resistance. DA Smith, TS Abney, and A Westphal SBR PIPE Workshop: Discussion of new features for the 2007 PIPE that will impact SBR observers and specialists. S Isard, J Golod, L Sconyers, and D Hershman Soybean Cultivar Disease Reaction to Inoculation with Diaporthe phaseolorum var. meridionalis, 2000-2006. B Wells and G Sciumbato Molecular Tools to Study the F. solani f.sp glycines-Soybean Interaction. S Mansouri and AM Fakhoury Inheritance and Genetic Mapping of Resistance to Pythium Damping-off caused by Pythium aphanidermatum in Soybean Cultivar Archer. ML Rosso, JC Rupe, CS Rothrock, and P Chen New Hosts to Phakopsora pachyrhizi Identified in Quincy, Florida. TL Slaminko Impact of Fungicide and Defoliation Timing on Disease Control and Soybean Uield. JB Blessitt, DH Poston, GL Sciumbato, RT Coleman, HC Doty, S Kyei-Boahiem, TW Eubank, and BL Spinks Effects of Post-inoculation Night Length and Daytime Light Intensity on Asian Soybean Rust Development. APS Dias, XB Yang, PF Harmon, and CL Harmon Foliar Fungicides: Timing of Application and Cultivar Reactions. MA Newman, W Percell, and R Zawacki Managing Asian Soybean Rust in Louisiana: The First Year. GB Padgett, RW Schneider, CA Hollier, A Hogan, MA Purvis, and C Robertson Modeling Light Intensity Patterns to Estimate Soybean Rust Outbreaks: Comparative Analysis in Brazil and South Africa. APS Dias, XB Yang, and X Li Southern Soybean Disease Workers 2006 Treasury Report. JP Bond Proceedings of the Southern Soybean Disease Workers are published annually by the Southern Soybean Disease Workers. Text, references, figures, and tables are reproduced as they were submitted by authors. The opinions expressed by the participants at this conference are their own and do not necessarily represent those of the Southern Soybean Disease Workers. Mention of a trademark or proprietary products in this publication does not constitute a guarantee, warranty, or endorsement of that product by the Southern Soybean Disease Workers

Proceedings of the 18th Annual Meeting, Southern Soybean Disease Workers (March 20-21, 1991, Lexington, Kentucky): National Perspective on Soybeans

Contents General session Presidential address. DE Hershman Keynote address. P O\u27Connell Invited speakers Major Soybean Diseases of the Midwest and Their Management. TS Abney Major Soybean Diseases of the Southeast and Their Management. WF Moore Disease Resistance in the Defense of Yield: A Commercial Breeders Perspective. HL Gabe Graduate student papers Effects of potassium fertilization and weed control on the severity.of anthracnose and pod and stem blight of soybeans in Louisiana. FG Barker, GT Berggren, and JP Snow Inheritance of soybean SDS response in segregating F5 derived lines. WJ Matthews, VN Njiti, PT Gibson, and ML Shenaut Selection of soybean genotypes with superior field weathering qualities. SL Zimmerman and HC Minor Southern stem canker epidemics: the infection window and the relationship between inoculation timing and yield of soybeans. GB Padgett, JP Snow, and GT Berggren Comparison of southern and northern isolates of Diaporthe phaseolorum var. caulivora, the soybean stem canker pathogen. YH Lee and JP Snow Contributed papers Soybean sudden death syndrome cultivar response. PT Gibson, ML Shenaut, VN Njiti, W Matthews, M Schmidt, and O Myers Chitinolytic fungi associated with Heterodera glycines in Missouri. P Donald and T Niblack Sources of resistance to Heterodera glycines in soybean cultivars. SC Anand J77-339: a soybean line highly susceptible and highly resistance to stem canker. AY Chambers Comparison of inoculation methods for the evaluation of soybean resistance to stem canker. GL Sciumbato and BL Keeling Evaluation of cultivars for stem canker resistance in an inoculated nursery. JP Snow and GB Padgett Saprophytic ability of the soybean stem canker pathogen and formation of perithecia on host and non-host plants. YH Lee, KB SubbaRao, and JP Snow Soybean yield losses due to leaf blights in Indiana. TS Abney and E Penaloza Incidence of SCN in Ontario and the effect of planting date on yield losses. TR Anderson, TW Welacky, and H Olechowski Influence of seven rotation options on Heterodera glycines egg densities and yield of Linford and Williams 82 soybean cultivars. GS Smith and T Niblack Soybean-peanut rotations for the management of Meloidogyne arenaria. R Rodríguez-Kábana, DG Robertson, L Wells, and PS King Tropical corn-soybean rotation in a field infested with root-knot and cyst nematodes. R Rodríguez-Kábana, DB Weaver, DG Robertson, CF Weaver, EL Carden, and MD Pegues Long-term effects of bahiagrass-soybean rotation on soybean yields in a field infested with Meloidogyne arenaria and Heterodera glycines. R Rodríguez-Kábana, DB Weaver, DG Robertson, EL Carden, and MD Pegues Sorghum-soybean rotations for the management of root-knot and cyst nematodes in South Alabama. R Rodríguez-Kábana, DB Weaver, DG Robertson, RW Young, EL Carden, and MD Pegues Rival soybean seed treatments: a review of field performance. R Knake Unified Soybean Disease Ratings. GR Bowers, Jr Stem Canker Disease Rating. GR Bowers, Jr, PA Backman, JD Hicks, MA Newman Business session Southern United States Soybean Disease Loss Estimates for 1990. GL Sciumbato Treasurer\u27s report. GG Hammes Committee Chairmen for 1990-1991 SSDW 1990 Award Recipients Proceedings of the Southern Soybean Disease Workers is published annually by the Southern Soybean Disease Workers. Text, references, figures, and tables are reproduced as they were submitted by the author(s). The opinions expressed by the participants at this conference are their own and do not necessarily represent the views of the Southern Soybean Disease Workers. Mention of trademark or propriety product in this Proceedings does not constitute a guarantee, warranty, of endorsement of that product by the Southern Soybean Disease Workers

Cotton Pests: Scouting and Management (2004)

From emergence until harvest, various pests attack the roots, leaves, stems or fruit (squares, blooms and bolls) of cotton. Growers and their field scouts must be vigilant in locating these pest outbreaks so that timely control measures can be undertaken. Diseases, including nematodes, reduced cotton production in Missouri an estimated 8.7 million pounds in 2001, 19.6 million pounds in 2002, and 39.7 million pounds in 2003. The value of the loss in 2003 was $17.1 million. Clearly cotton diseases are a serious detriment to the cotton farmer's income and the economy of Missouri