title: Effect of Soil Fumigation on Degradation of Pendimethalin and Oxyfluorfen in Laboratory and Ginger Field Studies.
abstract: Herbicides are usually applied to agricultural fields following soil fumigation to provide effective weed control in high-value cash crops. However, phytotoxicity has been observed in ginger seedlings following the application of herbicides in fumigated fields. This study tested a mixture of herbicides (pendimethalin and oxyfluorfen) and several fumigant treatments in laboratory and field studies to determine their effect on the growth of ginger. The results showed that soil fumigation significantly (P < 0.05) extended the degradation period of these herbicides in the field and in laboratory studies. The half-life of pendimethalin was extended by an average of approximately 1.29 times in the field and 1.74 times in the laboratory. The half-life of oxyfluorfen was extended by an average of about 1.19 times in the field and 1.32 times in the laboratory. Moreover, the extended period of herbicide degradation in the fumigant and nonfumigant treatments significantly reduced ginger plant height, leaf number, stem diameter, and the chlorophyll content. The study concluded that applying a dose below the recommended rate of these herbicides in chloropicrin (CP) or CP + 1,3-dichloropropene fumigated ginger fields is appropriate, as application of the recommended herbicide dose in fumigated soil may be phytotoxic to ginger.
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.
authors: Bin
authors: B
authors: Huang
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.
authors: Jun
authors: J
authors: Li
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.
authors: Wensheng
authors: W
authors: Fang
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.
authors: Pengfei
authors: P
authors: Liu
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.|State Key Laboratory for Biology of Plant Disease and Insect Pests , Beijing 100193, China.
authors: Meixia
authors: M
authors: Guo
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.|State Key Laboratory for Biology of Plant Disease and Insect Pests , Beijing 100193, China.
authors: Dongdong
authors: D
authors: Yan
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.|State Key Laboratory for Biology of Plant Disease and Insect Pests , Beijing 100193, China.
authors: Qiuxia
authors: Q
authors: Wang
authors: Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, China.|State Key Laboratory for Biology of Plant Disease and Insect Pests , Beijing 100193, China.
authors: Aocheng
authors: A
authors: Cao
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D005651:Fumigation; D020939:Zingiber officinale / Q000737:chemistry / Q000254:growth & development*; D006207:Half-Life; D055768:Halogenated Diphenyl Ethers / Q000737:chemistry*; D006540:Herbicides / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D055768:Halogenated Diphenyl Ethers; D006540:Herbicides; D012987:Soil; D012989:Soil Pollutants; C016027:oxyfluorofen; C030856:pendimethalin
keywords: degradation; ginger; oxyfluorfen; pendimethalin; soil fumigation