Kaur Navneet, Bhullar Makhan S
Punjab Agricultural University, Ludhiana, 141004, Punjab, India,
Environ Monit Assess. 2015 May;187(5):221. doi: 10.1007/s10661-015-4451-4. Epub 2015 Apr 2.
Terminal residues of pendimethalin and oxyfluorfen applied in autumn sugarcane- and vegetables-based intercropping systems were analyzed in peas (Pisum sativum), cabbage (Brassica oleracea), garlic (Allium sativum), gobhi sarson (Brassica napus), and raya (Brassica juncea). The study was conducted in winter season in 2010-2011 and in 2011-2012 at Ludhiana, India. Pendimethalin at 0.56 kg and 0.75 kg ha(-1) was applied immediately after sowing of gobhi sarson, raya, peas, garlic, and 2 days before transplanting of cabbage seedlings. Oxyfluorfen at 0.17 kg and 0.23 kg ha(-1) was applied immediately after sowing of peas and garlic and 2 days before transplanting of cabbage seedlings intercropped in autumn sugarcane. Representative samples of these vegetables were collected at 75, 90, 100, and 165 days after application of herbicides and analyzed by high-performance liquid chromatograph (HPLC) with diode array detector for residues. The residue level of pendimethalin and oxyfluorfen in mature vegetables was found to be below the limit of quantification which is 0.05 mg kg(-1) for both the herbicides. The soil samples were collected at 0, 7, 15, 30, 45, and 60 days after the application of their herbicides. The residues of herbicides in soil samples were found to be below the detectability limit of 0.05 mg kg(-1) after 60 days in case of pendimethalin and after 45 days in case of oxyfluorfen.
在以豌豆（Pisum sativum）、卷心菜（Brassica oleracea）、大蒜（Allium sativum）、油菜（Brassica napus）和芥菜（Brassica juncea）为种植对象的秋季甘蔗与蔬菜间作系统中，分析了二甲戊灵和乙氧氟草醚的最终残留情况。该研究于2010 - 2011年和2011 - 2012年冬季在印度卢迪亚纳进行。在油菜、芥菜、豌豆、大蒜播种后立即施用0.56千克/公顷和0.75千克/公顷的二甲戊灵，在卷心菜幼苗移栽前2天施用。在秋季甘蔗间作的豌豆和大蒜播种后立即施用0.17千克/公顷和0.23千克/公顷的乙氧氟草醚，在卷心菜幼苗移栽前2天施用。在施用除草剂后的75、90、100和165天采集这些蔬菜的代表性样本，并用配备二极管阵列检测器的高效液相色谱仪（HPLC）分析残留量。发现成熟蔬菜中二甲戊灵和乙氧氟草醚的残留水平低于定量限，这两种除草剂的定量限均为0.05毫克/千克。在施用除草剂后的0、7、15、30、45和60天采集土壤样本。发现土壤样本中除草剂的残留量在二甲戊灵施用60天后和乙氧氟草醚施用45天后低于可检测限0.05毫克/千克。
