[Objective] This paper was to improve the current status that the fungicide carbendazim as the single agent was largely applied in the control against wheat scab. [ Method] Five kinds of fungicides on sales and new ag...[Objective] This paper was to improve the current status that the fungicide carbendazim as the single agent was largely applied in the control against wheat scab. [ Method] Five kinds of fungicides on sales and new agents against wheat scab were selected for field trials. [ Result] 25% JS399 - 19 SC, 30% te- buconazoh · thiram WP, 75% trifloxystrobin · tebuconasole WDG and 10% ZJ0712 JG could effectively control wheat scab, and the control effects of one time or two times application were better than control agent carbendasim; the control efficacy of two times application was improved in different degrees against one time ap- vlication. [ Conclusion] The naner vrevided basis for the control atminst wheat scab.展开更多
The pathogenic characteristics of scab-anthracnoge of Fatsia japonica was introduced,and the infection cycle,occurrence regularity and main harmful symptoms of the disease were elaborated.Prevention is the main method...The pathogenic characteristics of scab-anthracnoge of Fatsia japonica was introduced,and the infection cycle,occurrence regularity and main harmful symptoms of the disease were elaborated.Prevention is the main method to prevent scab-anthracnoge of F.japonica,and disease-free seedlings should be cultivated.Meantime,cultivation management should be strengthened to improve disease resistance of plant,and chemical agents must be timely sprayed in the early incidence stage,in order to achieve the purpose of comprehensive control.展开更多
Among the most economically important fruit crops in South and North Kyrgyzstan affected by scab disease are apples (Malus domestica). Natural isolates of Venturia inaequalis were isolated from diseased parts of apple...Among the most economically important fruit crops in South and North Kyrgyzstan affected by scab disease are apples (Malus domestica). Natural isolates of Venturia inaequalis were isolated from diseased parts of apple trees, selected from different regions, through sedimentation of air microflora on the crowns of fruit trees. Two biocontrol agents as Trichoderma viride and Streptomyces sр. were tested for apple scab control in vitro and field conditions. Two applications of Trichoderma viride within 35 days completely stopped the scab disease in seedling leaves. Within 40 days, the seedlings were recovered;the new leaves have blossomed on branches. The Streptomyces sp. antagonists were inferior in effectiveness compared to Trichoderma viride;nevertheless, they prevented progression of the disease in the leaves. Seedlings grew new shoots and leaves around 50 days after the second treatment. Orchard experiment results provide great hope that a biological product based on Trichoderma viride could work as an effective agent to suppress the development of the pathogen in the early spring, when leaves start to show scab disease symptoms.展开更多
马铃薯疮痂病(potato common scab)近年来在我国主要产区广泛发生,造成严重危害,且缺乏绿色高效的防治措施。为筛选对疮痂病具有显著拮抗效果的生防菌株,本研究以疮痂链霉菌Streptomyces scabies为靶标,筛选到一株拮抗效果显著的生防菌...马铃薯疮痂病(potato common scab)近年来在我国主要产区广泛发生,造成严重危害,且缺乏绿色高效的防治措施。为筛选对疮痂病具有显著拮抗效果的生防菌株,本研究以疮痂链霉菌Streptomyces scabies为靶标,筛选到一株拮抗效果显著的生防菌株ZF517。通过形态学观察、生理生化特性测定以及多基因系统发育树分析,鉴定该菌株为枯草芽胞杆菌Bacillus subtilis。抑菌谱分析显示,菌株ZF517对6种病原真菌和3种病原细菌具有较高的拮抗效果。生防性状检测表明,ZF517能产生蛋白酶和嗜铁素,并含有Surfactin、Macrolactin、Fengycin、Difficidin、Bacillibactin、Bacillaene、Bacilysin和Iturin的合成基因。此外,ZF517的发酵液可抑制疮痂链霉菌菌丝的生长。经萝卜幼苗法验证,ZF517发酵液可显著抑制疮痂链霉菌对萝卜幼苗的侵染,其防效达到63.94%;盆栽试验结果表明,其对马铃薯疮痂病的防效达58.07%,显著优于对照药剂20%噻唑锌悬浮剂的防治效果。综上,菌株ZF517在防治马铃薯疮痂病方面表现出较大的生防潜力。展开更多
基金Supported by Science and Technology Support Project for Functional Areas of Food Production in Ningbo City (200903C1011009)
文摘[Objective] This paper was to improve the current status that the fungicide carbendazim as the single agent was largely applied in the control against wheat scab. [ Method] Five kinds of fungicides on sales and new agents against wheat scab were selected for field trials. [ Result] 25% JS399 - 19 SC, 30% te- buconazoh · thiram WP, 75% trifloxystrobin · tebuconasole WDG and 10% ZJ0712 JG could effectively control wheat scab, and the control effects of one time or two times application were better than control agent carbendasim; the control efficacy of two times application was improved in different degrees against one time ap- vlication. [ Conclusion] The naner vrevided basis for the control atminst wheat scab.
文摘The pathogenic characteristics of scab-anthracnoge of Fatsia japonica was introduced,and the infection cycle,occurrence regularity and main harmful symptoms of the disease were elaborated.Prevention is the main method to prevent scab-anthracnoge of F.japonica,and disease-free seedlings should be cultivated.Meantime,cultivation management should be strengthened to improve disease resistance of plant,and chemical agents must be timely sprayed in the early incidence stage,in order to achieve the purpose of comprehensive control.
文摘Among the most economically important fruit crops in South and North Kyrgyzstan affected by scab disease are apples (Malus domestica). Natural isolates of Venturia inaequalis were isolated from diseased parts of apple trees, selected from different regions, through sedimentation of air microflora on the crowns of fruit trees. Two biocontrol agents as Trichoderma viride and Streptomyces sр. were tested for apple scab control in vitro and field conditions. Two applications of Trichoderma viride within 35 days completely stopped the scab disease in seedling leaves. Within 40 days, the seedlings were recovered;the new leaves have blossomed on branches. The Streptomyces sp. antagonists were inferior in effectiveness compared to Trichoderma viride;nevertheless, they prevented progression of the disease in the leaves. Seedlings grew new shoots and leaves around 50 days after the second treatment. Orchard experiment results provide great hope that a biological product based on Trichoderma viride could work as an effective agent to suppress the development of the pathogen in the early spring, when leaves start to show scab disease symptoms.
文摘马铃薯疮痂病(potato common scab)近年来在我国主要产区广泛发生,造成严重危害,且缺乏绿色高效的防治措施。为筛选对疮痂病具有显著拮抗效果的生防菌株,本研究以疮痂链霉菌Streptomyces scabies为靶标,筛选到一株拮抗效果显著的生防菌株ZF517。通过形态学观察、生理生化特性测定以及多基因系统发育树分析,鉴定该菌株为枯草芽胞杆菌Bacillus subtilis。抑菌谱分析显示,菌株ZF517对6种病原真菌和3种病原细菌具有较高的拮抗效果。生防性状检测表明,ZF517能产生蛋白酶和嗜铁素,并含有Surfactin、Macrolactin、Fengycin、Difficidin、Bacillibactin、Bacillaene、Bacilysin和Iturin的合成基因。此外,ZF517的发酵液可抑制疮痂链霉菌菌丝的生长。经萝卜幼苗法验证,ZF517发酵液可显著抑制疮痂链霉菌对萝卜幼苗的侵染,其防效达到63.94%;盆栽试验结果表明,其对马铃薯疮痂病的防效达58.07%,显著优于对照药剂20%噻唑锌悬浮剂的防治效果。综上,菌株ZF517在防治马铃薯疮痂病方面表现出较大的生防潜力。
