The efficacy of herbal extract to control onion twister disease causal by Collectotrichum gloeosporioides fungal pathogen
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Abstract
The efficacy of extracts from 5 herbs was studied as follows garlic, fingerroot, galangal, turmeric and lemongrass, was studied in inhibiting Colletotrichum gloeosporioides. which is causative agent of the disease in shallot. Tested with Poison Food Technique, extracted with 95% ethanol. The culture medium containing 1,000 ppm of extracts was incubated at 25 °C for 3, 5, 7 and 9 days. Measure diameter of the fungi on the culture medium, was found that extracts of fingerroot, garlic, galangal, lemongrass, turmeric and control. Found that ability to inhibit the growth of Colletotrichum gloeosporioides were as follows: 93.86, 70.56, 24.56, 17.79, 15.79 and 0 percent, respectively. Field test to study the percentage of shallot incidence index. There were 5 test methods: M1) uninoculated, sprayed with water M2) inoculated, sprayed with water M3) inoculated, sprayed with fingerroot extract M4) inoculated with benomyl sprayed, M5) inoculated with benomyl and fingerroot sprayed, was found that M4 had a disease index of 2.17 percent. M3 had a disease incidence index of 11 percent and M5 had a disease incidence index of 7.50%. This experiment efficacy of fingerroot in controlling Colletotrichum gloeosporioides disease in shallots. Benefit to reduce use of chemicals and reduce development of fungi that affect fungal resistance.
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บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการเผยแพร่ในวารสารวิทยาศาสตร์และเทคโนโลยี มรย. นี้ ถือเป็นลิขสิทธิ์ของวารสารวิทยาศาสตร์และเทคโนโลยี มรย. หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจากวารสารวิทยาศาสตร์และเทคโนโลยี มรย. ก่อนเท่านั้น
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