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Michigan Potato Research Report Michigan State University Agricultural Experiment Station In Cooperation with the Michigan Potato Industry Commission Michigan Potato 2005 Research Report Volume 37 March 14, 2006 To All Michigan Potato Growers & Shippers: The Michigan Potato Industry Commission, Michigan State University’s Agricultural Experiment Station and Co- operative Extension Service are pleased to provide you with a copy of the results from the 2005 potato research projects. This report includes research projects funded by the Michigan Potato Industry Commission, the USDA Special Grant and special allocations by the Commission. Additionally, the Commission expresses appreciation to suppli- ers of products for research purposes and special grants to the Commission and researchers. Providing research funding and direction to principal investigators at MSU is a function of the Michigan Potato Industry Commission’s Research Committee. Best wishes for a prosperous 2006 season. Table of Contents Page INTRODUCTION AND ACKNOWLEDGEMENTS 1 2005 POTATO BREEDING AND GENETICS RESEARCH REPORT 5 David S. Douches, J. Coombs, K. Zarka, S. Cooper, L. Frank, J. Driscoll, and E. Estelle 2005 POTATO VARIETY EVALUATIONS 15 D.S. Douches, J. Coombs, L. Frank, J. Driscoll, J. Estelle, K. Zarka, C. Long, R. Hammerschmidt and W. Kirk 2005 ON-FARM POTATO VARIETY TRIALS 44 Chris Long, Dr. Dave Douches, Dave Glenn (Presque Isle), Dr. Doo- Hong Min and Chris Kapp (Upper Peninsula) POTATO SEED PIECE AND VARIETAL RESPONSE TO VARIABLE 62 RATES OF GIBBRELLIC ACID 2005 Chris Long and Dr. William Kirk POTATO SYSTEMS RESEARCH AT MRF AND SWMREC 66 Sieg Snapp, Kitty O’Neil, Bill Quackenbush and Dale Mutch EVALUATION OF SEED PIECE FUNGICIDES FOR CONTROL OF SEED- 72 TRANSMITTED FUSARIUM DRY ROT OF POTATOES William W. Kirk, Phillip S. Wharton, Devan Berry and Pavani Tumbalam IN-FURROW AT PLANTING TREATMENTS FOR CONTROL OF 78 COMMON SCAB IN POTATO, 2005. F. Abu el-Samen, R. Hammerschmidt, W. W. Kirk, R. L Schafer and D. Berry PRE-PLANTING APPLICATION OF CHLOROPICRIN AND IN-FURROW 80 AT PLANTING TREATMENTS OF BLOCKER FOR CONTROL OF COMMON SCAB IN POTATO, 2005. W. W. Kirk, C. Long, R. Schafer and D. Berry THE IMPORTANCE OF COMPETITION AND HOST PLANT RESISTANCE 82 ON SELECTION OF PHYTOPHTHORA INFESTANS POPULATIONS IN MICHIGAN AND NORTHERN IRELAND Gillian K. Young12, Louise R. Cooke1, William, W. Kirk2 & Pavani Tumbalam2 1Queen’s University of Belfast, Applied Plant Science Department, Newforge Lane, Belfast, BT9 5PX, UK 2Plant Pathology Department, Michigan State University, East Lansing, Michigan, US. Page EVALUATION OF FUNGICIDE PROGRAMS FOR POTATO EARLY 85 BLIGHT CONTROL, 2005. W. W. Kirk, R. L Schafer, D. Berry, P. Tumbalam and P. Wharton EVALUATION OF FUNGICIDE PROGRAMS FOR POTATO LATE 86 BLIGHT CONTROL, 2005. W. W. Kirk, R. L Schafer, D. Berry, P. Tumbalam and P. Wharton HOST PLANT RESISTANCE AND REDUCED RATES AND FREQUENCIES 89 OF FUNGICIDE APPLICATION TO CONTROL PO TATO LATE BLIGHT W.W. Kirk, D.S. Douches, C. Thill and A. Thompson MANAGING RHIZOCTONIA DISEASES OF POTATO WITH OPTIMIZED 94 FUNGICIDE APPLICATIONS AND VARIETAL SUSCEPTIBILITY; RESULTS FROM THE 2005 FIELD EXPERIMENTS. Devan R. Berry, William W. Kirk, Phillip S. Wharton, Robert L. Schafer, and Pavani G. Tumbalam POTATO INSECT BIOLOGY AND MANAGEMENT 106 Adam M. Byrne, Walter L. Pett, Edward J. Grafius, Beth A. Bishop MICHIGAN POTATO INDUSTRY COMMISSION 127 2005 G. W. BIRD NEMATOLOGY LABORATORY ANNUAL REPORT George W. Bird, Professor Department of Entomology, Michigan State University BIOLOGICAL APPROACHES TO NEMATODE MANAGEMENT IN 144 MICHIGAN AGRICULTURE: USE OF BIOFUMIGANTS IN POTATO SOILS Haddish Melakeberhan, Associate Professor of Nematology Department of Entomology, Michigan State University SUMMARY REPORT FOR THE 2004-2005 148 DR. B. F. (BURT) CARGILL POTATO DEMONSTRATION STORAGE Brian Sackett, Chris Long, Dick Crawford, Todd Forbush (Techmark, Inc.), Steve Crooks, Dennis Iott, Keith Tinsey, Tim Young, Jason Walther, Troy Sackett, Randy Styma and Ben Kudwa 2005 MICHIGAN POTATO RESEARCH REPORT C. M. Long, Coordinator INTRODUCTION AND ACKNOWLEDGMENTS The 2005 Potato Research Report contains reports of the many potato research projects conducted by MSU potato researchers at several locations. The 2005 report is the 37th volume, which has been prepared annually since 1969. This volume includes research projects funded by the Special Federal Grant, the Michigan Potato Industry Commission (MPIC), GREEEN and numerous other sources. The principal source of funding for each project has been noted at the beginning of each report. We wish to acknowledge the excellent cooperation of the Michigan potato industry and the MPIC for their continued support of the MSU potato research program. We also want to acknowledge the significant impact that the funds from the Special Federal Grant have had on the scope and magnitude in several research areas. Many other contributions to MSU potato research have been made in the form of fertilizers, pesticides, seed, supplies and monetary grants. We also recognize the tremendous cooperation of individual producers who participate in the numerous on-farm projects. It is this dedicated support and cooperation that makes for a productive research program for the betterment of the Michigan potato industry. We further acknowledge the professionalism of the MPIC Research Committee. The Michigan potato industry should be proud of the dedication of this Committee and the keen interest they take in determining the needs and direction of Michigan's potato research. Special thanks go to Dick Crawford for the management of the MSU Montcalm Research Farm and the many details which are a part of its operation. We also want to recognize Barb Smith at MPIC and Sheila Crooks for helping with the details of this final draft. WEATHER The overall 6-month average temperatures during the 2005 growing season were slightly higher than the 6-month average for the 2004 season and were higher than the 15-year average (Table 1). There were four recorded temperature readings of 90 °F or above in 2005. Three of these days occurred in late June and one in early August. For two nights in June the minimum temperature remained above 70 ºF. There were 14 days in April and 2 in early May that the temperature was below 32 °F. There was no daytime low, near 32 °F, during harvest (September to October). The average maximum temperatures for June, July, August and September of 2005 were well above the 15-year average (Table 1). Rainfall for April through September was 15.05 inches (Table 2). Rainfall recorded during the months of May and August was well below the 15-year averages for the same months. Rainfall recorded during the month of April was the lowest recorded for that month in 15 years. Irrigation at MRF was applied 10 times from June 22nd to August 31st averaging 0.69 inches for each application. The total amount of irrigation water applied during this time period was 6.9 inches. 1 Table 1. The 15-year summary of average maximum and minimum temperatures (°F) during the growing season at the Montcalm Research Farm. 6-Month April May June July August September Average Year Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. 1991 60 40 71 47 82 59 81 60 80 57 69 47 74 52 1992 51 34 70 42 76 50 76 54 75 51 69 46 70 46 1993 54 33 68 45 74 55 81 61 79 60 64 46 70 50 1994 57 34 66 43 78 55 79 60 75 55 73 51 71 50 1995 51 31 66 45 81 57 82 60 82 65 70 45 72 51 1996 50 31 64 44 75 57 76 55 80 59 70 51 69 50 1997 54 31 59 39 79 56 80 57 73 55 69 50 69 48 1998 60 37 75 51 77 56 82 58 81 60 76 52 75 52 1999 59 37 71 48 77 55 84 62 76 56 73 48 73 51 2000 56 34 70 49 75 57 77 56 79 57 70 49 71 50 2001 61 37 70 49 78 57 83 58 72 70 69 48 72 53 2002 56 36 63 42 79 58 85 62 81 58 77 52 73 51 2003 56 33 64 44 77 52 81 58 82 58 72 48 72 49 2004 62 37 67 46 74 54 79 57 76 53 78 49 73 49 2005 62 36 65 41 82 60 82 58 81 58 77 51 75 51 15-Year Average5735674578568158785872497250 Table 2. The 15-year summary of precipitation (inches per month) recorded during the growing season at the Montcalm Research Farm. Year April May June July August September Total 1991 4.76 3.68 4.03 5.73 1.75 1.50 21.45 1992 3.07 0.47 1.18 3.51 3.20 3.90 15.33 1993 3.47 3.27 4.32 2.58 6.40 3.56 23.60 1994 3.84 2.63 6.04 5.16 8.05 1.18 26.90 1995 3.65 1.87 2.30 5.25 4.59 1.38 19.04 1996 2.46 3.99 6.28 3.39 3.69 2.96 22.77 1997 2.02 3.13 3.54 2.80 2.71 1.46 15.66 1998 2.40 2.21 1.82 0.40 2.22 3.05 12.10 1999 5.49 5.07 5.82 4.29 5.46 4.03 30.16 2000 3.18 6.46 4.50 3.79 5.28 5.25 28.46 2001 3.28 6.74 2.90 2.49 5.71 4.43 25.55 2002 2.88 4.16 3.28 3.62 7.12 1.59 22.65 2003 0.70 3.44 1.85 2.60 2.60 2.06 13.25 2004 1.79 8.18 3.13 1.72 1.99 0.32 17.13 2005 0.69 1.39 3.57 3.65 1.85 3.90 15.05 15-Year Average 2.91 3.78 3.64 3.40 4.17 2.70 21.00 2 GROWING DEGREE DAYS Table 3 summarizes the cumulative, base 50°F growing degree days (GDD) for May through September, 2005.
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