Effects of reduced pesticide application on rice planthopper control by M45 multi-rotor plant protection UAV

ZHANG Yali; GAO Qichao; DENG Jizhong; CHEN Pengchao; HUANG Xiaoyu; LIN Fangyuan; ZENG Wen; JIA Ruichang

doi:10.7671/j.issn.1001-411X.202103002

Journal of South China Agricultural University > 2021 > 42(6): 36-42. > DOI: 10.7671/j.issn.1001-411X.202103002

ZHANG Yali, GAO Qichao, DENG Jizhong, et al. Effects of reduced pesticide application on rice planthopper control by M45 multi-rotor plant protection UAV[J]. Journal of South China Agricultural University, 2021, 42(6): 36-42. DOI: 10.7671/j.issn.1001-411X.202103002

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Effects of reduced pesticide application on rice planthopper control by M45 multi-rotor plant protection UAV

ZHANG Yali^{1, 2,},
GAO Qichao^{1, 2},
DENG Jizhong^{1, 2},
CHEN Pengchao^{2, 3},
HUANG Xiaoyu^{2, 3},
LIN Fangyuan⁴,
ZENG Wen^{1, 2, ,},
JIA Ruichang^{1, 2, ,}

1.
College of Engineering, South China Agricultural University, Guangzhou 510642, China
2.
National Center for International Joint Research on Precision Agriculture Aviation Pesticides Spraying Technology, Guangzhou 510642, China
3.
College of Electronic Engineering/College of Artificial intelligence, South China Agricultural University, Guangzhou 510642, China
4.
Agricultural and Rural Bureau of Xinhui District, Jiangmen City, Guangdong Province, Jiangmen 529100, China

More Information

Received Date: January 26, 2021
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
In order to explore the effect of reduced pesticide application on the control effect of rice planthopper by multi-rotor plant protection UAV and promote the development of reduced pesticide application technique for rice.

Method
Field experiment was carried out using an M45 multi-rotor plant protection UAV for rice pesticides application. We used two spray volumes of 15.0 and 22.5 L/hm², and three pesticide dosages of 100%, 90%, and 80% of the conventional artificial control dosage. The effect of different spray volume and reduced dosage on the droplet deposition and the control of rice planthopper were analyzed.

Result
The droplet deposition in the upper part of the rice canopy was significantly higher than that in the lower part of the canopy. The differences of two spray volumes and three dosages on the droplet deposition were not significant. At the same time, the number of rice planthopper decreased significantly after one week of treatment. Under the condition of the same spray volume, the effect of reduced dosage on the control effect of rice planthopper was not significant. Rice spray dosage of 80% of manual application met the requirement of rice planthopper control.

Conclusion
The spray dosage of 80% can be considered as feasible dosage in the UAV application for rice. The results provide useful reference for promoting the reductions of pesticide application for rice and the operating cost of rice plant protection.
- plant protection UAV,
- reduced pesticide application,
- droplet deposition,
- rice planthopper,
- control effect

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References (19)

References

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