Benefits and Profitability of Fluopyram-Amended Seed Treatments for Suppressing Sudden Death Syndrome and Protecting Soybean Yield: A Meta-Analysis

摘要

Agronomy, University of Wisconsin, Madison 53706; Loren J. Giesler, Department of Plant Pathology, University of Nebraska-Lincoln, Lincoln 68508; Heather M. Kelly, Entomology and Plant Pathology Department, University of Tennessee, Jackson 38301 ; Dean K. Malvick, Department of Plant Pathology, University of Minnesota, St. Paul 55108; Febina M. Mathew, Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings 57007; John C. Rupe, Department of Plant Pathology, University of Arkansas, Fayetteville 72701; Laura E. Sweets, Division of Plant Sciences, University of Missouri, Columbia 65211 ; Albert U. Tenuta, Ontario Ministry of Agriculture, Food, and Rural Affairs, Ridgetown, ON N0P2C0, Canada; Kiersten A. Wise, Department of Plant Pathology, University of Kentucky, Princeton 42445; and Daren S. Mueller,+ Department of Plant Pathology and Microbiology, Iowa State University, AmesA meta-analytic approach was used to summarize data on the effects of fluopyram-amended seed treatment on sudden death syndrome (SDS) and yield of soybean (Glycine max L.) in over 200 field trials conducted in 12 U.S. states and Ontario, Canada from 2013to 2015. In those trials, two treatments—the commercial base (CB), and CB plus fluopyram (CBF)—were tested, and all disease and yield data were combined to conduct a random-effects and mixed-effects meta-analysis (test of moderators) to estimate percent control and yield response relative to CB. Overall, a 35% reduction in foliar disease and 295 kg/ha (7.6%) increasein yield were estimated for CBF relative to CB. Sowing date and ge graphic region affected both estimates. The variation in yield respon was explained partially by disease severity (19%), geographic regi( (8%), and sowing date (10%) but not by the resistance level of the cul var. The probability of not offsetting the cost of fluopyram was estimati on a range of grain prices and treatment cost combinations. There was high probability (>80%) of yield gains when disease level was high any cost-price combinations tested but very low when the foliar sym] toms of the disease were absent.