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Title: Ultra-low altitude and low spraying technology research with UAV in paddy

Author
item XUE, XINYU - Nanjing Research Institute For Agriculture
item QIN, WEICAI - Nanjing Research Institute For Agriculture
item Lan, Yubin

Submitted to: International Conference on Precision Agriculture Abstracts & Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 7/15/2012
Publication Date: 7/15/2012
Citation: Xue, X., Qin, W., Lan, Y. 2012. Ultra-low altitude and low spraying technology research with UAV in paddy. International Conference on Precision Agriculture Abstracts & Proceedings. CD-ROM.

Interpretive Summary:

Technical Abstract: Aerial application has characteristics of low-volume, small droplet, and possibility of drift. To control rice planthopper, leaf roller and blast, the research aimed at screening agrichemicals and determining the feasibility of using high concentration of conventional dosage for aerial application. The results showed that higher concentration of imidacloprid WP, ME, WG, carbendazim WP and Jinggangmycin were safe for rice; while chlorpyrifos EC, EW, showed significant phytotoxicity. The results of UAV application showed that the droplets in the lower leaves of rice were 92.8 percent of those in the upper leaves, which was significantly higher than conventional ground application. The amount of spray drift was 12.9 percent of the total spray amount at the flight velocity of 3 m/s and wind speed of 4-5m/s. A 90 percent of the spray drift from the spray area was concentrated in the range of 8 m. The spray drift in the air was zero at a distance of 50 m. In the control efficacy field trails, we found that 80 percent of the conventional dosage gave the best control effect.