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试验结果表明:在马铃薯晚疫病发病初期,采用68%精甲霜·锰锌WG 75g/667m2、72%代森锰锌·霜脲氰WP100g/667m2或68.75%[噁]唑菌酮·锰锌WG 65g/667m2,施用2次后,均可收到87%以上的防治效果. 相似文献
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五种昆虫可溶性海藻糖酶活性比较 总被引：1，自引：0，他引：1
采用葡萄糖氧化酶法,比较测定了亚洲玉米螟[Ostrinia furnacalis(Guenée)]、黏虫[Mythimna separata (Walker)]、棉铃虫[Helicoverpa armigera(Hübner)]、小菜蛾[Plutella xylostella (Linnaeus)]和甜菜夜蛾[Spodoptera exigua (Hübner)]5种农业害虫的不同生活史阶段及5龄幼虫各组织中可溶性海藻糖酶活性的变化情况.活性测定结果表明:5种昆虫卵中海藻糖酶的活性最低,其次为蛹和初孵幼虫,取食阶段海藻糖酶的活性比较高,随着幼虫龄期的增加,海藻糖酶的活性也随着升高.亚洲玉米螟、黏虫、棉铃虫和甜菜夜蛾不同组织部位海藻糖酶的活性研究表明,亚洲玉米螟和棉铃虫中肠中海藻糖酶的活性最高,分别为316.17和39.35 mU/mg,而甜菜夜蛾体壁中海藻糖酶活性最高,达到139.99 mU/mg.黏虫脂肪体中海藻糖酶活性最高,为11.19 mU/mg.不同昆虫间海藻糖酶的活性差异较大,玉米螟和甜菜夜蛾各组织的海藻糖酶活性较高,而黏虫各组织部位海藻糖酶的活性很低. 相似文献
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Monilinia fructicola was until very recently a regulated pest in the European Union, and EU countries were requested to monitor its presence on their territories. As accredited laboratories should use validated tests, the mycological laboratory of CRA‐PAV carried out a validation process for the multiplex based PCR test (Coté et al., 2004 ), that is one of the most widely used tests for the identification of M. fructicola, although this test is not described in the EPPO diagnostic protocol PM 7/18 (2) because the validation data were lacking. The performance characteristics of this multiplex PCR test were established according to the EPPO Standard PM 7/98 (1) and the test was compared in a collaborative study with the end point PCR test (Ioos & Frey, 2000 ), considered as the ‘standard test’. The validation data were obtained using different isolates of M. fructicola, M. laxa, M. fructigena and Monilia polystroma, as well as different fruit tissues. Four series of the DNA target at different concentration, repeated three times, were analyzed in four Italian laboratories. The results showed that the multiplex PCR detection test (Coté et al., 2004 ) was fit for diagnostic purpose, although the analytical sensitivity was significantly lower compared to the conventional PCR ‘standard test’. 相似文献
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Dušan Novák 《国际虫害防治杂志》2013,59(3):348-349
Abstract In preliminary field tests in woodlands swamps of southern Morava, ?SSR, it was found that Abate 500E at the rate 0.1 g/m2 of water surfaces killed Aëdes vexans, A. cinereus and A. sticticus larvae 3 instar during 24 hours, but in other case at the rate 0.05 g/m2 of water surfaces killed not the A. vexans pupae. In southern Morava, CSSR a new larvicide, Abate* was tested for Aëdes larvae and pupae control in the field. Abate (0,0,01,01 -tetramethyl 0,01 -thiodi-p-phenylene phosphorothioate) is an organophosphate insecticide that has been highly effective when tested against many different species of mosquito larvae. It is of very low toxicity to man and presents a minimum hazard in control. A well timed application of Abate will control the mosquito larva before it can develop into a pupa. Barnes and Webb (1968) applied one briquette of 0.58 g or 0.78 g/10 cu. ft. water in woodland pools, against Aëdes canadensis (Thio.). A. cantator (Coq.). A. vexans (Mg.) and Culex restuans Theo. Early spring treatment controlled all species as they normally appear in chronological sequence until early fall. One treatment of 6 pools gave excellent larval control throughout the 176-day test period; 23 pools were retreated on day 57, but this may have been unnecessary. No deleterious effects were noted on aquatic organisms. The US Department of Health and Welfare (1968) reports that 1% granules of Abate (0.002–0.06 lb/ac) satisfactorily kills A. vexans larvae. Lewis et al. (1965) applied 43% ec. and 1% granules of Abate (0.075 to 0.2 lb/ac; or 0.084 to 0.22 kg/ha) to log ponds. Both formulations gave excellent initial and residual (up to 18 days) control at dosages used. The e.c. seemed to act for a longer period. It was used for Culex peus Speiser, C. pipiens L., C. tarsalis (Coq.) and Culiseta larvae control. In southern Morava Abate 500E, a 50% (W/v) emulsifiable concentrate containing 500 g a.i./l was tested in the woodland swamps – mosquito breeding places – against A. vexans, A. cinereus Mg. and A. sticticus (Mg.) instar larvae or A. vexans pupae. In the first experiment 10g Abate 500E were used on 100 m2 of water surface, mixed with water at 1:100. The insecticide was applied on two sites and a third chosen as control. Larvae were counted from 250 ml samples from each site. Table 1 shows the average number of larvae from each site. 相似文献
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1．1 供试材料 5％烯效唑可湿性粉剂和对照药剂15％多效唑可湿性粉剂均由四川省化工研究设计院生产。 相似文献
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Germination tests on thirty-two East African weed species 总被引：2，自引：0，他引：2
M. FENNER 《Weed Research》1980,20(3):135-138
The seeds of thirty-two species of common East African weeds were set to germinate in the light and in the dark. Eighteen species with more than 40% germination in the light were also germinated in leaf shade and in neutural shade of equal intensity. Germination of fifteen of these was inhibited by darkness, and of sixteen by leaf shade, with complete inhibition in six species. A high degree of dormancy was found in fourteen species. Only one species in this group responded to alternate wetting and drying of the seeds. In eight species dormancy was less in older seeds. The ecological implications of the results are briefly discussed, and comparisons made with temperate weeds. 相似文献
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通过供试的18种药剂对铁皮石斛黑斑病菌体外抑制作用测试结果表明,除克菌特外,所有药剂对其孢子萌发都有显著的抑制作用,其中代森锰锌、易保、代森锌和炭疽福美可完全抑制孢子萌发,霉克特、扑海英、使百克、新太生、甲基托布津和世高对孢子萌发有较强烈的抑制作用。与对照比较,克菌特促进孢子萌发率高于对照23.34%,克菌特和庄园乐都能促进芽管生长。18种药剂对石斛黑斑病菌菌丝体的抑制作用测定结果显示,所有药剂对菌丝生长都有显著的抑制作用,其中使百克和世高对菌丝体抑制效果最好,抑菌率都达91.28%,其次是施佳乐、福星和扑海英。 相似文献
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G. A. Carter 《European journal of plant pathology / European Foundation for Plant Pathology》1977,83(1):17-25
The use of a series of tests in the assessment of systemic and chemotherapeutic activity of new compounds is discussed and illustrated with structure-activity studies on analogues of triforine, chloraniformethan and carboxin. 相似文献
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试验表明,41％农泰水剂,10％草甘膦水剂,74．7％水溶性农民乐颗粒剂和20％克无踪水剂4种除草剂对早稻免耕抛秧田杂草的防治效果较好,施药7～10d后杂草防治率在94．76％以上,可以大面积推广应用。 相似文献
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C. Trontin B. Agstner D. Altenbach G. Anthoine H. Bagi&#x;ska I. Brittain A. Chabirand A. M. Chapp P. Dahlin T. Dreo C. Freye‐Minks C. Gianinazzi C. Harrison G. Jones M. Luigi S. Massart N. Mehle M. Mezzalama H. Mouaziz F. Petter M. Ravnikar T. M. Raaymakers J. P. Renvois M. Rolland M. Santos Paiva S. Seddas R. van der Vlugt A. Vu
urovi&#x; 《EPPO Bulletin》2021,51(1):198-206
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为摸索木材热浸泡处理方法,分别用56℃、66℃、76℃的恒温水浴浸泡木段,检测其中心温度,当水浴温度76℃,持续处理时间2h时,直径10cm供试松木中心温度能保持56℃以上30min;水浴52℃条件下,供试松材线虫在5min内被100%杀死. 相似文献
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近年来,由于冬季气温偏高有利于三化螟越冬,以及耕作制度和栽培方式的改变为三化螟提供了有利的生长发育条件,三化螟种群数量大辐度回升,成为永安市水稻上的主要害虫之一。三化螟在当地每年发生4代,发生面积达2 000hm2左右,虽经大力防治,但稻谷损失仍达400 000㎏。为了筛选防治三化螟的有效药剂,2002年笔者应用50%吡虫啉·乙酰WP等几种农药进行防治三化螟药效试验,现将结果整理如下。 1 材料与方法 供试药剂为50%吡虫啉·乙酰WP;30%三唑磷EC;10%吡虫啉WP;75%乙酰甲胺磷WP;20%三唑磷EC。 试验在永安市洪田镇洪田村连晚水稻田进行,该田… 相似文献
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