Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India.
Division of Crop Protection, ICAR-Indian Institute Vegetable Research, Varanasi, India.
J Environ Sci Health B. 2020;55(5):501-507. doi: 10.1080/03601234.2020.1724750. Epub 2020 Feb 10.
Controlled release (CR) nanoformulations of Mancozeb (Manganese-zinc double salt of -bisdithiocarbamic acid), a protective fungicide, have been developed using poly (ethylene glycols) (PEGs) based functionalized amphiphilic copolymers and evaluated for the management of early blight in tomato. During the field experiment, it was observed that number of infected leaflets/plants were less in developed formulation treated plants as compared to commercial products. Number of infected leaflets per plant was 2.40-4.60 and the number of fruits per plant were 6.40-9.00 at 50 mg L, whereas at 100 mg L, the corresponding numbers were 2.10-4.10 and 6.30-9.10 respectively. These formulations can be used to optimize the release of Mancozeb to achieve disease control for the desired period depending upon the matrix of the polymer used. Importantly, sufficient amount of active ingredient remains available for a reasonable period of time after application leading to reduced number of applications of pesticide.
代森锰锌（乙撑双二硫代氨基甲酸盐的锰锌双盐）的控释（CR）纳米制剂已经使用基于聚乙二醇（PEGs）的功能化两亲嵌段共聚物开发出来，并用于评估其对番茄早疫病的防治效果。在田间试验中，与商业产品相比，开发的制剂处理植物中受感染的叶片/植物数量较少。在 50mg/L 时，每株植物的受感染叶片数为 2.40-4.60，每株植物的果实数为 6.40-9.00，而在 100mg/L 时，相应的数量分别为 2.10-4.10 和 6.30-9.10。这些制剂可以根据聚合物基质优化代森锰锌的释放，以在所需的时间段内实现对疾病的控制。重要的是，在施药后相当长的一段时间内，仍有足够数量的有效成分可供使用，从而减少农药的使用次数。
