Namiki Sayuri, Otani Takashi, Motoki Yutaka, Seike Nobuyasu
Institute for Agro-Environmental Sciences, NARO, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan.
J Pestic Sci. 2018 Nov 20;43(4):248-254. doi: 10.1584/jpestics.D18-041.
We cultivated var. in soil mixed with four pesticides (fenobucarb, procymidone, flutolanil, and tolclofos-methyl) at different temperatures, day lengths, and soil water contents. We compared plants' uptake and translocation abilities of the pesticides as affected by growth conditions. The root concentration factor (RCF) of pesticides tended to increase with rising temperature; however, but the influence of temperature on the transpiration stream concentration factor (TSCF) differed for each pesticide. The RCFs and TSCFs of pesticides were high for short days. The soil water content had little or no effect on the uptake and translocation of pesticides. These results showed that it is necessary to consider growth conditions, especially the temperature and day length in plant uptake models for these pesticides.
我们在与四种农药（仲丁威、腐霉利、氟酰胺和甲基立枯磷）混合的土壤中，于不同温度、日照长度和土壤含水量条件下培育变种。我们比较了受生长条件影响的植物对农药的吸收和转运能力。农药的根浓度系数（RCF）往往随温度升高而增加；然而，温度对蒸腾流浓度系数（TSCF）的影响因每种农药而异。短日照条件下农药的RCF和TSCF较高。土壤含水量对农药的吸收和转运几乎没有影响。这些结果表明，在这些农药的植物吸收模型中，有必要考虑生长条件，尤其是温度和日照长度。
