Adak Totan, Kumar Jitendra, Shakil Najam A, Pandey Sushil
Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012, India.
National Bureau of Plant Genetic Resources, New Delhi, 110012, India.
J Sci Food Agric. 2016 Oct;96(13):4351-7. doi: 10.1002/jsfa.7643. Epub 2016 Feb 25.
Nano-size and wide-range solubility of amphiphilic polymers (having both hydrophilic and hydrophobic blocks) can improve uniformity in seed coatings. An investigation was carried out to assess the positive effect of amphiphilic polymers over hydrophilic or hydrophobic polymers as seed coating agents and pesticide carriers.
Amphiphilic polymers with 127.5-354 nm micelle size were synthesized in the laboratory using polyethylene glycols and aliphatic di-acids. After 6 months of storage, germination of uncoated soybean seeds decreased drastically from 97.80 to 81.55%, while polymer-coated seeds showed 89.44-95.92% germination. Similarly, vigour index-1 was reduced from 3841.10 to 2813.06 for control seeds but ranged from 3375.59 to 3844.60 for polymer-coated seeds after 6 months. The developed imidacloprid formulations retained more pesticide on soybean seed coatings than did a commercial formulation (Gaucho(®) 600 FS). The time taken for 50% release of imidacloprid from seed coatings in water was 7.12-9.11 h for the developed formulations and 0.41 h for the commercial formulation.
Nano-range amphiphilic polymers can be used to protect soybean seeds from ageing. Formulations as seed treatments may produce improved and sustained efficacy with minimum environmental contamination. © 2016 Society of Chemical Industry.
两亲性聚合物（兼具亲水和疏水链段）的纳米尺寸和广泛溶解性可提高种子包衣的均匀性。开展了一项研究，以评估两亲性聚合物作为种子包衣剂和农药载体相对于亲水性或疏水性聚合物的积极效果。
在实验室中使用聚乙二醇和脂肪族二酸合成了胶束尺寸为127.5 - 354 nm的两亲性聚合物。储存6个月后，未包衣大豆种子的发芽率从97.80%急剧降至81.55%，而聚合物包衣种子的发芽率为89.44% - 95.92%。同样，对照种子的活力指数 - 1从3841.10降至2813.06，而聚合物包衣种子在6个月后的活力指数范围为3375.59至3844.60。所开发的吡虫啉制剂在大豆种子包衣上保留的农药比市售制剂（高巧（®）600 FS）更多。所开发制剂中吡虫啉从种子包衣在水中50%释放所需的时间为7.12 - 9.11小时，而市售制剂为0.41小时。
纳米级两亲性聚合物可用于保护大豆种子免于老化。作为种子处理的制剂可以在对环境污染最小的情况下产生改善的和持续的效果。© 2016化学工业协会。
