Nawrocki J, Mazur S
Department of Plant Protection, Agricultural University Al. 29-Listopada 54, PL-31 425 Kraków, Poland.
Commun Agric Appl Biol Sci. 2005;70(3):241-5.
Effectiveness of new fungicide Zato 50 WG (biologically active substances BAS - trifloxystrobin 50%) in the control of Alternaria blight on carrot was studied. Field experiments were carried out in the years 2003-2004 on carrot cv. Koral. As the standard fungicide Amistar 250 SC (BAS - azoxystrobin 250 g/dm3) was used. The results of health status of carrot leaves analysis in first and second year of experiment showed, that development of disease symptoms was lower on leaves of chemical protected plants than on leaves of control plants. The last estimation of infestation degree of carrot leaves made immediately before harvest showed, that standard fungicide Amistar had longer systemic influence on plants. This was confirmed the lower (statistically significant) infestation index of protected carrot in combination with Amistar. The estimations of health status of carrot roots were made directly after digging up indicate, that there wasn't difference of value of infestation index between protected combination and control. Experiment showed, significant effect of tested fungicides on crop quantity of carrot roots per 1 m2. Especially in the second year of study the crop of carrot roots in combination with Zato was higher - statistically significant - than in the rest combinations.
研究了新型杀菌剂Zato 50 WG（生物活性物质BAS - 肟菌酯50%）对胡萝卜链格孢叶斑病的防治效果。2003 - 2004年对胡萝卜品种Koral进行了田间试验。使用标准杀菌剂阿米西达250 SC（BAS - 嘧菌酯250 g/dm³）。试验第一年和第二年对胡萝卜叶片健康状况的分析结果表明，化学保护植株叶片上病害症状的发展程度低于对照植株叶片。收获前立即对胡萝卜叶片侵染程度的最终评估表明，标准杀菌剂阿米西达对植株的系统影响持续时间更长。这一点通过与阿米西达组合处理的受保护胡萝卜较低（具有统计学意义）的侵染指数得到了证实。胡萝卜根挖出后直接对其健康状况进行评估表明，受保护组合与对照之间的侵染指数值没有差异。试验表明，所测试的杀菌剂对每1平方米胡萝卜根的产量有显著影响。特别是在研究的第二年，与Zato组合处理的胡萝卜根产量在统计学上显著高于其他组合。
