Management of Early Leaf Spot of Peanut with Pyraclostrobin as Affected by Rate and Spray Interval

Fig. 5. Effect of rate and application interval of pyraclostrobin on pod yield of peanut at Plains, Georgia, in 1999 and Tifton, Georgia, in 1999 and 2000. The 14-, 21-, and 28-day application intervals for pyraclostrobin are depicted by black, yellow, and blue lines, respectively. There was no significant increase in yield with increasing rates of pyraclostrobin above 112 g/ha for any schedule in either location. Vertical red bars represent yields of Nontreated plots; plots treated with chlorothalonil (Chl), tebuconazole (Teb), and azoxystrobin (Azoxy) on 14-, 21-, or 28-day schedules; and block applications of chlorothalonil (sprays 1, 2, and 7) and tebuconazole (sprays 3 to 6) on a 14-day schedule (Teb block). Vertical red bars do not correspond to rate values on the x-axis. Numbers following the fungicide abbreviations indicate the spray interval in days. There was no year × treatment interaction for Tifton. Therefore, values listed for that location are the means from two years.



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Management of Early Leaf Spot of Peanut with Pyraclostrobin as Affected by Rate and Spray Interval