Mukherjee Irani, Gopal Madhuban, Das T K
Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012, India.
Bull Environ Contam Toxicol. 2007 Jul;79(1):49-52. doi: 10.1007/s00128-007-9221-8. Epub 2007 Jun 30.
Lactofen, a member of the diphenyl ether chemical family, shows great potential for the control of broadleaf weeds associated with leguminous crops. It presents a high degree of selectivity when applied post-emergence to soybean and peanut crops. This paper presents the persistence of lactofen under a soybean crop under various conditions, including without remediation techniques, under soil solarization with polyethene sheets, and soil solarization followed by straw amendment. The results indicate that dissipation is faster when using the soil solarization technique (set II) compared to no treatment (set I) and is further enhanced by tstraw amendment, where almost 90% dissipation was recorded (set III). The dissipation followed first-order kinetics with a half-life that varied from 30 to 10 days. The half-life of lactofen was 15 days in treatments of soil solarization and straw amendments alone, indicating that both techniques have to be used in combination to achieve successful remediation of soil. Use of biodegradable polythene/substitute material will make this process a popular technique and may also improve its commercial viability.
乳氟禾草灵是二苯醚化学家族的一员，在防治与豆科作物相关的阔叶杂草方面具有巨大潜力。在大豆和花生作物出苗后施用时，它表现出高度的选择性。本文介绍了在各种条件下，包括不采用修复技术、用聚乙烯薄膜进行土壤太阳能消毒以及土壤太阳能消毒后添加秸秆改良剂的情况下，乳氟禾草灵在大豆作物下的残留情况。结果表明，与不处理（第一组）相比，采用土壤太阳能消毒技术（第二组）时消散更快，而秸秆改良剂进一步增强了消散效果，在第三组中记录到几乎90%的消散率。消散遵循一级动力学，半衰期从30天到10天不等。单独进行土壤太阳能消毒和添加秸秆改良剂处理时，乳氟禾草灵的半衰期为15天，这表明两种技术必须结合使用才能成功修复土壤。使用可生物降解的聚乙烯/替代材料将使这个过程成为一种受欢迎的技术，也可能提高其商业可行性。
