Microneedle-Based Precision Engineering for Agrochemical Delivery and Plant Health Monitoring In Situ

Microneedles, which are small needle-shaped devices, have gained attention as versatile tools with applications across various fields owing to their precision and minimal invasiveness. In the literature, the integration of microneedle technology into agricultural domains has been explored, particularly focusing on the real-time monitoring of precise agrochemical delivery and crop biosensing in situ. In this study, we summarize representative microneedle types and corresponding fabrication techniques. Then, we discuss the advantages of microneedles in plant health management and drug delivery, as well as related challenges, such as safety and mass production. The agricultural applications of microneedles can potentially overcome the limitations of traditional methods and offer innovative solutions for crop disease management. This study demonstrates that microneedles present innovative possibilities in agriculture and contribute to the improvement of sustainable agriculture.