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首页> 外文会议>International Symposium on Chemical and Non-Chemical Soil and Substrate Disinfestation >THE USE OF DISINFECTANTS FOR CONTROLLING A SOILBORNE FOOT AND ROOT ROT DISEASE COMPLEX ON GREENHOUSE TOMATOES IN THE ROCKWOOL OPEN CULTURE SYSTEM
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THE USE OF DISINFECTANTS FOR CONTROLLING A SOILBORNE FOOT AND ROOT ROT DISEASE COMPLEX ON GREENHOUSE TOMATOES IN THE ROCKWOOL OPEN CULTURE SYSTEM

机译：用消毒剂在岩油开放式培养系统中对温室西红柿进行控制的控制体系

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Three-year old rockwool slabs, heavily infested with Phytophthora nicotianae and Fusarium oxysporum f.sp. radicis-lycopersici, were treated prior to autumn crop of greenhouse tomatoes with the following disinfectants: hydrogen peroxide (1%), peracetic acid + hydrogen peroxide + acetic acid (HP+PAA) at 0.2% of commercial formulation and dimethylalkylbenzyl ammoniumchloride + polyhexamethylene-biguanidine hydrochloride (QAC+Chx) at 0.1 and 0.003%. Under conditions of a high disease pressure, the best control of Phytophthora foot and root rot of tomato was obtained by preplanting treatment of reused rockwool slabs with HP+PAA and QAC+Chx disinfectants, which reduced the mortality of tomato plants from 75% in untreated control to 8.3 and 16.7%, respectively. HP+PAA and QAC+Chx increased the marketable yield by about 560 - 570% over control. Also QAC+Chx applied before planting at a concentration of 0.003% and then used at 0.002% for drenching tomato plants at 7-day intervals throughout the growing period, provided significant suppression of Phytophthora nicotianae. The efficacy of hydrogen peroxide at a concentration of 1% (10000 ppm) in controlling disease was significantly lower than that of other disinfectants tested, and inadequate to be accepted commercially. Although F.o. f.sp. radicis-lycopersici was recovered from about 40% of root samples, no typical aboveground symptoms of Fusarium crown and root rot were observed. Cumulative total yield at the end of picking was significantly inversely correlated with root rot severity (r = - 0.726) and mean disease severity ratings on stems (r = -0.801).
机译：三岁的摇滚长轴，用植物感染植物嗜烟草和镰刀菌富疮。 Radicis-lycopersici在秋季的温室西红柿中进行治疗，下列消毒剂：过氧化氢（1％），过乙酸+氢过氧化氢+乙酸（HP + PAA）在0.2％的商业制剂和二甲基烷基苄氯丙烯酰氯+聚环氧化物 - 盐酸大胍（QAC + CHX）为0.1和0.003％。在高疾病压力的条件下，通过预先使用与HP + PAA和QAC + CHX消毒剂的重用处理，获得番茄植物脚和根腐的最佳控制，从而将番茄植物的死亡率从未处理的75％降低控制分别为8.3和16.7％。 HP + PAA和QAC + CHX在对照中将可销售产量提高约560-570％。此外，在种植之前施用的QAC + CHX，浓度为0.003％，然后在整个生长期间以7天的间隔使用0.002％，为植物植物进行显着抑制植物。过氧化氢在控制疾病中浓度为1％（10000ppm）的功效显着低于测试的其他消毒剂的效果，并且商业上可接受的不充分。虽然F.O. F.SP. Radicis-Lycopersici从约40％的根样品中回收，没有典型的镰刀冠冠和根腐肉的地上症状。拣选结束时的累积总产量与根腐败严重程度（R = - 0.726）显着与茎的平均疾病严重程度额相相关（R = -0.801）。

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