Temporal dynamics of pesticide use in three field vegetable crops with respect to sowing date and degree days

Kati Räsänen, Janne Kaseva, Marja Aaltonen, Irene Vänninen
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Abstract

We analysed the timing of pesticide treatments for eventual analysis of temporal environmental risks associated with pesticide use in field vegetable crops. At the same time, we investigated whether farmers followed the Integrated Pest Management (IPM) instructions. The data cover chemical plant protection in field vegetable farms in southwestern Finland in 2009–2019. The timing of treatments, made with different pesticides in the weeks following sowing, corresponded with the known phenology of different pests of carrot, swede and fresh pea. The same was true for the carrot fly, the pea moth and the second generation of the cabbage root fly when phenological flight time models using historical data were used to predict the timing of treatments. We conclude that farmers acted in accordance with the principles of IPM when practising chemical control. For those species that lacked phenological predictive models in the study years, the degree days for the observed timing of treatments can be used as a starting point if such models are developed in the future. Our results can be used as a long-term baseline in future surveys on the changes in pesticide use and their risks regarding the studied crops.
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三种大田蔬菜作物农药用量随播期和度数变化的时间动态
我们分析了农药处理的时间,以最终分析与田间蔬菜作物中农药使用相关的时间环境风险。同时,我们调查了农民是否遵循害虫综合治理(IPM)的指示。该数据涵盖了2009-2019年芬兰西南部大田蔬菜农场的化学植物保护。在播种后的几周内使用不同的农药进行处理的时间与胡萝卜、瑞典和新鲜豌豆不同害虫的已知物候相对应。当使用历史数据的物候飞行时间模型来预测处理时间时,胡萝卜蝇、豌豆蛾和第二代白菜根蝇的情况也是如此。我们得出结论,农民在实施化学防治时遵循IPM原则。对于研究年份中缺乏物候预测模型的物种,如果将来开发物候预测模型,可以将观测到的处理时间的度数作为起点。我们的结果可以作为未来调查农药使用变化及其对所研究作物的风险的长期基线。
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来源期刊
CiteScore
4.40
自引率
0.00%
发文量
56
审稿时长
2.3 months
期刊介绍: Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .
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