Details

Autor(en) / Beteiligte

• Liu, Yan
• Jiang, Fengqiong
• Zhang, Yuwei
• Xu, Chuanhui
• Fu, Lihua
• Lin, Baofeng

Titel

Phosphate-modified cellulose/chitosan with high drug loading for effective prevention of rice leaffolder (Cnaphalocrocis medinalis) outbreaks in fields

Ist Teil von

• International journal of biological macromolecules, 2023-07, Vol.243, p.125145-125145, Article 125145

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The continuous infestation of pests has seriously affected rice growth, yield and quality. How to reduce the use of pesticides and effectively control insect pests is a bottleneck problem. Herein, based on hydrogen bonding and electrostatic interactions, we posed a novel strategy to construct emamectin benzoate (EB) pesticide loading system using self-assembled phosphate-modified cellulose microspheres (CMP) and chitosan (CS). CMP provides more binding sites for EB loading and CS coating further enhances the carrier loading capacity up to 50.75 %, which jointly imparted pesticide photostability and pH-responsiveness. The retention capacity of EB-CMP@CS in rice growth soil reached 101.56-fold that of commercial EB, which effectively improved the absorption of pesticides during rice development. During the pest outbreak, EB-CMP@CS achieved effective pest control by increasing the pesticide content in rice stems and leaves, the control efficiency of the rice leaffolder (Cnaphalocrocis medinalis) reached 14-fold that of commercial EB, and could maintain the effective pest control effect during the booting stage of rice. Finally, EB-CMP@CS-treated paddy fields had improved yields and were free of pesticide residues in the rice grain. Therefore, EB-CMP@CS achieves effective control of rice leaffolder in paddy fields and has potential application value in green agricultural production. Based on the high drug load carrier of phosphate-modified cellulose/chitosan, the effective control of rice leaffolder in paddy field was realized. [Display omitted] •Phosphate-modified cellulose carrier with drug load up to 50.75 % was obtained.•EB-CMP@CS retention in rice growing soil was 101.56 times that of commercial EB.•Effective control of the rice leaffloder was realized and prevented pest outbreak.•The application of EB-CMP@CS in paddy fields was multi-dimensional tracked.•EB-CMP@CS-treated rice yield was significantly enhanced without pesticide residues.