花生疮痂病药剂防治试验   总被引：6，自引：2，他引：6  

方树民  王正荣  郭建铭  陈玉森  王文贺 《中国油料作物学报》2006,28(2):220-223,227

供试19种杀菌剂对花生疮痂病防效经室内抑菌作用测定与田间小区药效试验,从中筛选出具良好效果 的托布津、世高、速克灵和多硫超微多菌灵。进一步测试表明, 70%甲基托布津(浓度为2. 00g/L)和10%世高(浓 度为1. 00g/L) ,于发病初期开始,每隔10d连续施药2次防效较好。5种药剂田间防治试验结果表明, 70%甲基托 布津可湿性粉剂2. 00g/L和10%世高水分散粒剂1. 00g/L的防效分别为80. 3%和79. 3% ,明显优于其它3种参试 药剂;与对照(CK)相比,果荚增产60. 8%和53. 9%。且世高能兼治锈病,可推广应用。  相似文献   

几种药剂防治辣椒疫病田间药效试验     

罗文辉  邹佳泉  舒成星  刘先辉  刘昌敏  郭瑞光 《长江蔬菜》2016,(8):93-94

开展了不同药剂防治辣椒疫病田间药效试验。试验结果表明,从辣椒花蕾期开始连续施药3次,每次间隔10 d,500 g/L咪唑菌酮悬浮剂(SC)15 g/667 m~2、722 g/L霜霉威盐酸盐水剂52 m L/667 m2和450 g/L咪唑菌酮·霜霉威盐酸盐SC 100~133 g/667 m~2,对辣椒疫病具有良好的防治效果,且对辣椒安全。  相似文献   

Penthiopyrad applied in close proximity to Rhizoctonia solani provided effective disease control in sugar beet     

《Crop Protection》2016

Rhizoctonia solani Kühn is an important pathogen of sugar beet (Beta vulgaris L.) that can cause damping-off and crown and root rot. Commercial cultivars which are highly resistant to the pathogen are not as high yielding as susceptible cultivars under low or absent disease pressure. These resistant cultivars often do not have resistance to other common pathogens such as Aphanomyces cochlioides, Cercospora beticola, and Fusarium oxysporum. Fungicides, such as azoxystrobin which belongs to the quinone outside inhibitors (QoI) class, are necessary for controlling Rhizoctonia solani, but there are concerns about the buildup of fungicide-resistant strains in the targeted pathogen population. There is a need to find effective fungicides from different chemical groups so they can be rotated with the current widely-used azoxystrobin to manage R. solani. The objective of this greenhouse study was to evaluate the efficacy of penthiopyrad, a succinate dehydrogenase inhibitor (SDHI), in managing R. solani on sugar beet using three different application methodologies. Penthiopyrad effectively controlled R. solani on sugar beet when applied at 210, 280, 420, or 550 g a.i./ha in-furrow at planting and as a soil drench at the 4-leaf stage. However, foliar application of penthiopyrad failed to provide disease control. These trials indicated that penthiopyrad needs to be in close proximity or direct contact with R. solani in the soil to provide effective control. Penthiopyrad has the potential to be used as an effective alternate partner with azoxystrobin for controlling R. solani and to help in mitigating the development of fungicide resistant isolates of R. solani.  相似文献   

7种杀真菌剂对蒜薹灰霉菌抑制效果研究   总被引：2，自引：0，他引：2  

薛婷  陈丽  李喜宏  王海芬 《河南农业科学》2006,(3):92-94

研究了7种常用杀真菌剂对蒜薹采后灰霉菌的抑制效果,结果表明,在PDA培养基上,保鲜克和施美清的4个浓度处理都能完全抑制蒜薹灰霉菌的生长,抑菌率均达到100%;施美特、山推007、盖克、醚菌酯、霜疫力克的抑菌率都高于95%,但灰霉菌对它们的反应灵敏度均不高,且对醚菌酯产生抗药性。  相似文献   

新疆立架栽培甜瓜白粉病药剂防治研究   总被引：2，自引：0，他引：2  

努尔·麦麦提  杨渡  依米尔·艾乃斯  韩盛  周鹏  古勤生  翟文强 《中国瓜菜》2011,24(1):31-34

为了筛选新疆喀什地区立架栽培甜瓜的首要病害——甜瓜白粉病的高效药剂,对25%乙嘧酚悬浮剂等7种药剂进行了田间药效试验。结果表明,立架栽培甜瓜第3次喷药后14d,25%乙嘧酚750倍、50%醚菌酯3000倍、25%乙嘧酚1500倍和25%嘧菌酯3000倍药量处理防效分别为99.75%、99.26%、99.20%和96.04%,且这3种药剂的持效性较好。研究讨论了甜瓜白粉病的防治原则、大田甜瓜白粉病的初侵染病源、立架栽培甜瓜白粉病防治始期和高效机械喷雾器应用等关键技术。  相似文献   

几种杀菌剂对茶轮斑病菌的室内毒力及田间药效   总被引：2，自引：0，他引：2  

郭世保  陈俊华  史洪中 《贵州农业科学》2014,(10)

为了筛选防治茶轮斑病的化学药剂,采用菌落直径法测定了茶轮斑病菌对7种杀菌剂的敏感性,并对茶轮斑病菌高度敏感药剂进行田间药效试验。结果表明：轮斑病菌对阿米西达、世高、丙环唑、百菌清和苯菌灵高度敏感,其抑制中浓度（EC50）在0．0947～3．0630μg/mL;甲基托布津和多菌灵的 EC50分别为6．9649μg/mL 和7．0405μg/mL,表现为中度敏感（EC50＝5～20μg/mL）;田间药效以25％阿米西达SC 150 g/hm2的防效最高,达86．96％;其次为10％世高 WG 125 g/hm2、25％丙环唑 EC 112．5 g/hm2和75％百菌清WP 125 g/hm2,防效分别为81．16％、74．79％和72．38％;50％苯菌灵WP 325 g/hm2防效最低,为62．21％。  相似文献   

几种杀菌剂对水稻纹枯病的防治效果     

练有生  ;练德进  ;王增盛  ;肖桂雄 《商界．城乡致富》2014,(3):28-29

[目的]寻求防治水稻纹枯病的有效药剂。[方法]在水稻破口期分别施用250 g/L嘧菌酯SC 240 ml/hm2、30%己唑醇SC 225 g/hm2、30%己唑醇SC 225 g/hm2＋250 g/L嘧菌酯SC 225 ml/hm2、75%肟菌酯·戊唑醇WG 150 g/hm2、300 g/L苯醚甲环唑·丙环唑EC 300 ml/hm2、10%井冈霉素A SPX 3600 g/hm2,隔7 d再施药1次,调查几种杀菌剂对水稻纹枯病的防治效果。[结果]30%己唑醇SC 225 g/hm2＋250 g/L嘧菌酯SC 225 ml/hm2对水稻纹枯病的防治效果最好,第2次药后14 d的防效为87.53%;其次是30%己唑醇SC 225 g/hm2、300 g/L苯醚甲环唑·丙环唑EC 300 ml/hm2,防治效果分别为79.03%、78.92%;而75%肟菌酯·戊唑醇WG 150 g/hm2、10%井冈霉素A SPX 3600 g/hm2、250 g/L嘧菌酯SC 240 ml/hm2防治效果较差。几种药剂在水稻破口抽穗期用药安全性均较好。[结论]30%己唑醇SC 225 g/hm2＋250 g/L嘧菌酯SC 225 ml/hm2可以作为今后防治水稻纹枯病的替代农药,在生产上进一步推广使用。  相似文献   

Occurrence of resistant strains of Botrytis cinerea to anilinopyrimidine fungicides in table grapes in Chile   总被引：1，自引：0，他引：1  

B. A. Latorre  I. Spadaro  M. E. Rioja 《Crop Protection》2002,21(10):957-961

Effort to control gray mold caused by Botrytis cinerea failed in a table grapevine (Vitis vinifera) vineyard near Santiago, Chile where cyprodinil (Vangard 50 WP), a new fungicide of the anilinopyrimidine group, had been applied alone up to four times per year during two growing seasons. A relatively high frequency (38.5%) of resistant isolates of B. cinerea (EC₅₀ for mycelial growth inhibition varied from 2.9 to 4.84 μg ml⁻¹) may explain the partial loss of field control efficacy obtained. Resistance was correlated with a complete loss of in vivo sensitivity to cyprodinil. Resistant isolates of B. cinerea showed cross resistance to the anilinopyrimidines fungicides mepanipyrim and pyrimethanil. Cyprodinil partially impaired conidia germination and differentially affected conidial germination of resistant and sensitive isolates. Significant differences (p<0.05) in growth rate, sclerotia production and osmotic sensitivity were found among isolates of B. cinerea, but no correlation could be drawn between these biological differences and resistance or sensitivity. This indicates a disruptive selection characteristic of monogenic resistance. Thus, strategies were implemented to avoid the further development and spread of resistance in B. cinerea to the anilinopyrimidine fungicides. To our knowledge this constitutes the first mention of resistance in B. cinerea populations to anilinopyrimidine fungicides in South America.  相似文献   

盆栽后处理、种植密度及农药对AM真菌生长繁殖的影响   总被引：2，自引：0，他引：2  

王幼珊  刘相梅  张美庆  邢礼军 《华北农学报》2002,17(1):94-99

研究了盆栽培养后处理方式、宿主种植密度和农药对Glomus mosseae生长繁殖的影响，结果表明，后处理A和后处理B的处理方式均可促进孢子的形成，以高粱为宿主的产孢量分别比对照提高90．9％，54．5％，三叶草为宿主则分别提高61．5％；7．7％杀菌剂利得不利于G．mosseae繁殖体的形成，施后产孢量仅为对照的47．6％，杀菌剂代森锰锌对生长繁殖影响不大。试验所设的在体积为9600cm^3的容器里高粱的4个种植密度中，7和14棵的处理更有利于G．mosseae孢子的产生。  相似文献   

Effect of some fungicide seed treatments on the survival of Bradyrhizobium japonicum and on the nodulation and yield of soybean [Glycine max. (L) Merr.]     

Cécile Revellin  Philippe Leterme  Gérard Catroux 《Biology and Fertility of Soils》1993,16(3):211-214

Several commercial fungicide seed treatments were evaluated for their possible effect on the survival of Bradyrhizobium japonicum on seeds and on the nodulation and yield of soybeans in a greenhouse and a field experiment. quinolate Pro (carbendazim and oxine copper), Vitavax 200FF (carboxin and thiram), and Monceren (pencycuron) had a small effect or no effect on the survival of B. japonicum and on the nodulation and yield of soybeans. They can thus be considered compatible with soybean seed inoculation. Germipro UFB (carbendazim and iprodione), Apron 35J (metalaxyl), and Tachigaren (hymexazol) decreased B. japonicum survival and the nodulation and yield of soybeans and thus cannot be considered compatible with soybean seed inoculation.  相似文献