Pesticide Residue Laboratory, Indian Institute of Horticultural Research, Hessaraghatta Lake P.O., Bangalore, 560089, India.
Environ Monit Assess. 2016 Jul;188(7):406. doi: 10.1007/s10661-016-5404-2. Epub 2016 Jun 14.
Carbendazim is widely used on pomegranate for control of a large number of fungal diseases. Its residue levels in/on pomegranate fruits and soil were evaluated under field conditions. The quick, easy, cheap, effective, rugged, and safe (QuEChERS) method in conjunction with liquid-chromatography mass spectrometry was used for analysis of carbendazim. Recovery of carbendazim was within 78.92-96.28 % and relative standard deviation within 3.8-10.9 % (n = 6). Carbendazim residues on pomegranate fruits dissipated at the half lives of 17.3 and 22.8 days from treatments at 500 and 1000 g active ingredient (a.i.) ha(-1), respectively. Its residues in pomegranate aril were highest on the tenth day and reduced thereafter. The residue level of carbendazim on pomegranate whole fruits from standard dose treatment was less than the EU maximum residue limit (MRL) of 0.1 mg kg(-1) at harvest. The carbendazim residues were <LOQ in the aril and field soil at harvest. The pre-harvest intervals (PHIs) of carbendazim on pomegranate were 65.4 and 103.4 days. The results of this study can be used to determine the judicious use of carbendazim for plant protection of pomegranate crop.
多菌灵广泛用于防治石榴的多种真菌病害。在田间条件下,评估了其在石榴果实和土壤中的残留水平。采用快速、简便、廉价、有效、耐用和安全(QuEChERS)方法结合液相色谱-质谱法分析多菌灵。多菌灵的回收率在 78.92-96.28%之间,相对标准偏差在 3.8-10.9%(n=6)之间。在 500 和 1000 g 有效成分(a.i.)公顷(ha)(分别)的处理后,石榴果实上的多菌灵残留半衰期分别为 17.3 和 22.8 天。其在石榴果肉中的残留量在第十天最高,此后逐渐降低。来自标准剂量处理的石榴全果中的多菌灵残留量低于欧盟最大残留限量(MRL)0.1 mg kg(-1)在收获时。在收获时,多菌灵在石榴果肉和田间土壤中的残留量均低于检测限(LOQ)。多菌灵在石榴上的预收获间隔(PHI)分别为 65.4 和 103.4 天。本研究结果可用于确定合理使用多菌灵防治石榴作物病害。