전착제를 활용한 무인항공기 농약 살포 시 수도작에서의 농약 비산 양상 비교

The effectiveness of adjuvants was evaluated in enhancing deposition within target spray area and reducing off-target pesticide drift during UAV-based pesticide applications. Tricyclazole, a widely used fungicide formulation in rice cultivation, was selected to measure deposition behavior using a Cellulose Deposition Sampler (CDS). The results demonstrated that the inclusion of paraffin and lecithin type adjuvants increased average depositions in CDS and rice plant samples (panicle and green leaf blade). Drift patterns were influenced by wind direction, and higher wind speeds were associated with increased drift rates. Compared to the untreated control, the relative drift reduction ratio ranged from –1.3 to 34.6% for the paraffin adjuvant and from 33.8 to 65.9% for the lecithin adjuvant, with greater drift reduction observed at higher wind speeds. Pesticide residue levels in harvested brown rice remained below the maximum residue limit (MRL) across all treatments, ensuring food safety of adjuvants. These findings indicate that the use of adjuvants in UAV-based applications can effectively reduce drift, improve application efficiency, and promote environmental sustainability in agricultural practices. KCI Citation Count: 0