کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4506547 | 1624356 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Application of acibenzolar-S-methyl and standard fungicides for control of Phytophthora blight on squash Application of acibenzolar-S-methyl and standard fungicides for control of Phytophthora blight on squash](/preview/png/4506547.png)
A plant systemic acquired resistance inducer, acibenzolar-S-methyl (ASM), was evaluated to determine the efficacy for suppression of Phytophthora blight of squash caused by Phytophthora capsici under field conditions. ASM was applied as foliar sprays before and after transplanting at rates of 17.5, 8.8, and 4.4 g a.i. ha−1. Application of ASM did not significantly reduce final Phytophthora blight incidences in 2 out of 3 field experiments; however, area under the disease progress curve (AUDPC) values were reduced significantly by ASM in all experiments conducted. Disease suppression by the three application rates of ASM was not significantly different. To determine the effect of application of ASM in conjunction with standard chemical fungicides, ASM was applied with mefenoxam (Ridomil Gold), copper hydroxide, and mandipropamid (Revus). AUDPC values and final disease incidences were consistently lower in field plots treated by the combination of ASM and standard fungicides than applications of these chemicals alone. Application of ASM resulted in significantly higher squash yield than the non-treated control in 2 of 3 experiments and plots treated with the combined use of ASM and standard fungicides produced the highest yields. These results suggest that ASM may induce plant resistance under field conditions, providing suppression of Phytophthora blight of squash, and that there may be some benefit to the integration of ASM and standard chemical fungicides.
► Acibenzolar-S-methyl (ASM) was evaluated for suppression of Phytophthora blight.
► ASM application did not always result in lower disease and higher squash yield.
► Combining ASM and other fungicides showed a tendency to enhance disease reduction.
► Effect of three rates of ASM on disease incidence was not significantly different.
Journal: Crop Protection - Volume 30, Issue 12, December 2011, Pages 1601–1605