Relationship between plant uptake of pesticides and water-extractable residue in Japanese soils

被引：23

作者：

Mutoki, Yutaka ^{[1
]}

Iwafune, Takashi ^{[2
]}

Seike, Nobuyasu ^{[1
]}

Otani, Takashi ^{[1
]}

Akiyama, Yoshihiro ^{[2
]}

机构：

[1] Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan

[2] Agr Chem Inspect Stn, Food & Agr Mat Inspect Ctr, Kodaira, Tokyo 1870011, Japan

来源：

JOURNAL OF PESTICIDE SCIENCE | 2015年 / 40卷 / 3-4期

关键词：

pesticides; plant uptake; succeeding crops; water-extraction of soil; phytoavailability; soil aging; CARBONACEOUS ADSORBENTS; DIELDRIN CONCENTRATION; CUCUMBER FRUITS; SORPTION; TIME; FATE;

D O I：

10.1584/jpestics.D15-017

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

The relationship between pesticide concentrations in Komatsuna (Brassica rapa var. perviridis) shoots and the extractable concentrations in soils by a sequential soil-extraction method was investigated in 8 pesticides and in 4 soils. Concentrations of many pesticides in Komatsuna shoots showed higher positive correlation with water-extractable than with total-extractable soil concentrations. We also examined the effects of the soil-aging periods (SAPs) between pesticide applications and sowing on pesticide concentrations in Komatsuna shoots. Pesticide concentrations in Komatsuna shoots and soil-water extracts decreased with increasing SAPs. These results imply that estimating the pesticide concentrations in crops based on water-extractable concentrations in soil and setting the appropriate SAPs prevent contamination of crops by pesticide residues in soil. However, the correlation between pesticide concentrations in Komatsuna shoots and water extracts in soils, and the effectiveness of pesticide reduction in Komatsuna shoots by setting long SAPs differed according to the pesticide type. Hence, the applicability of the water-extraction method should be verified for each pesticide. (c) Pesticide Science Society of Japan

引用

页码：175 / 183

页数：9

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