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首页> 外文期刊>Plant disease management reports PDMR >Evaluation of fungicide rotations at different application intervals for the control of downy mildew of knockout roses, 2016
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Evaluation of fungicide rotations at different application intervals for the control of downy mildew of knockout roses, 2016

机译：评价不同应用间隔的杀菌剂旋转，以控制击倒玫瑰霜霉病，2016

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This study was conducted on The Pink Double Knock Out roses grown in no. 5 nursery containers under 45% shade at a commercial nursery in Smithville, TN. Plants were fertilized with 3.2 oz of 18-6-12 Osmocote Classic on 1 Jun. The experimental design was a randomized complete block with 10 single plant replicates. Plants were watered daily using overhead impact sprinklers. The initial fungicide application was made after observing the first symptoms of downy mildew disease. Treatments were mixed withCapSil at 4 fl oz/100 gal and applied in a 7 or 14-day rotation program to run-off using a backpack CO2-pressurized sprayer at 40 psi beginning on 12 Aug and ending on 21 Oct. Downy mildew incidence was evaluated by counting the total number of infectedleaves per plant on 28 Oct. Phytotoxicity and defoliation were evaluated using a scale of 0-100% foliage affected, while visual residue was evaluated using a scale of 0 to 10 (0=no effect; 10=complete plant affected) on 19 and 26 Aug; 2, 9, 16, 23 and 30Sep; 7, 14, 21 and 28 Oct. Plant average width and height were measured at the end of the trial on 28 Oct. Average maximum temperatures for 12-31 Aug, 1-30 Sep and 1-28 Oct were 87.4, 85.3 and 77.7°F; average minimum temperatures were 70.1, 62.2 and 51.2°F; and total rainfall was 1.25, 1.13 and 0.33 in., respectively. Analysis of variance was performed using the general linear models procedure using SAS statistical software and means were separated using Fisher's LSD test.
机译：这项研究是在粉红色双击中玫瑰中进行的。 5个托儿所在史密斯维尔，TN的商业幼儿园下的45％阴影。植物于6月1日，植物于3.2盎司18-6-12奥斯莫古托经典施肥。实验设计是随机完整的块，具有10个单株植物重复。植物每天用架空冲击喷水剂浇水。初始杀菌剂申请是在观察毛霉病的第一个症状后进行的。将处理与4 Fl Oz / 100加仑混合，并在7或14天的旋转程序中应用于在40年8月12日开始的40 psi中使用背包二氧化碳加压喷雾器，并于10月21日结束。柔软的霉菌发病率通过计算每株植物每株植物的总数进行评估。使用影响的0-100％叶子的等级评估植物毒性和脱落，而使用0至10的等级评估视觉残留物（0 =没有效果; 10 =完整的植物受影响的人）19和26日期; 2,9,16,23和30sep; 10月7日，14日，21日和28日植物平均宽度和高度在审判结束时测量，于10月28日在审判结束时测量。2010年8月的平均最高温度为12-31月1日至23月，10月1日至28日10月87.4,85.3和77.7 °F;平均最小温度为70.1,62.2和51.2°F;和总降雨量分别为1.25,1.13和0.33英寸。使用使用SAS统计软件的一般线性模型程序进行差异分析，并且使用Fisher的LSD测试分离方式。

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