Effects of citrus tree-shape and spraying height of small unmanned aerial vehicle on droplet distribution

Zhang Pan, Deng Lie, Lyu Qiang, He Shaolan, Yi Shilai, Liu Yande, Yu Yongxu, Pan Haiyang

Abstract


In order to explore the droplet penetration of spraying with unmanned aerial vehicle (UAV) on citrus trees with different shapes, the tests were carried out at different working heights. The material was five years old Cocktail grapefruit (Citrus paradisi cv. Cocktail) grafted on Trafoliata (Poncirus trifoliata L. Raf.) and the type of UAV sprayer used was the 3W-LWS-Q60S. A solution of 300 times Ponceau 2R diluents liquid instead of pesticide was used for citrus fields spraying and the droplets were collected by paper cards. Droplets deposition parameters were extracted and analyzed using digital image processing after scanning the cards. The results showed that: 1) For the trees with round head shape canopy, the droplet depositions of the upper, middle and lower layers had a significant difference at 0.05 level. The droplet deposition had the best effect when the working height was 1.0 m, where the average droplet deposition densities were 39.97 droplets/cm2 and the average droplet size was 0.30 mm, but the droplet coverage (3.19%) was lower than that at the working height of 1.5 m (4.27%). 2) Under three different working heights of UAV, the tree with open center shape can obtain higher droplet deposition density at all three layers than that with the round head shape canopy. It was especially prominent when the working height was 1.0 m, as the middle layer increased by 49.92%. However, the higher range of droplet deposition density meant larger fluctuation and dispersion. 3) The open center shape canopy and the 1.0 m working height obviously improved the droplet coverage rate and droplet density in the citrus plant. For these parameters of open center shape citrus tree, there was no obvious difference in the front and rear direction, but in the left and middle part of the tree crown, the difference reached a 0.05 significant level. Considering droplet deposition characteristics and the spray uniformity, the UAV performed better when working on open center shape plants at a 1.0 m working height.
Keywords: citrus, tree shape, unmanned aerial vehicle (UAV), droplet deposition
DOI: 10.3965/j.ijabe.20160904.2178

Citation: Zhang P, Deng L, Lyu Q, He S L, Yi S L, Liu Y D, et al. Effects of citrus tree-shape and spraying height of small unmanned aerial vehicle on droplet distribution. Int J Agric & Biol Eng, 2016; 9(4): 45－52.

Keywords


citrus, tree shape, unmanned aerial vehicle (UAV), droplet deposition

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References


Shan Y. Present situation development trend and countermeasures of citrus industry in China. Journal of Chinese Institute of Food Science and Technology, 2008; 8(1): 1–8. (in Chinese with English abstract)

Zhang F. Statistical analysis of main fruit production in China in 2013. Chinese Fruit Industry Information, 2014; 31(12): 30–42. (in Chinese with English abstract)

Mustafa M, Imran M, Rasool A, Azeem M, Riaz A, Afzal M. Evaluation of commercial citrus cultivars for resistance to citrus leaf miner and its management. Journal of Entomology and Zoology Studies, 2014; 2(6): 213–216.

Atiq M, Khan M A, Sahi S T, Ahmad R. Genetic response of citrus germplasm against citrus leaf miner. Journal of Animal and Plant Sciences, 2013; 23(1): 240–243.

Wise J C, Jenkins P E, Schilder A M, Vandervoort C, Isaacs R. Sprayer type and water volume influence pesticide deposition and control of insect pests and diseases in juice grapes. Crop Protection, 2010; 29: 378–385.

He X K. Improving severe draggling actuality of plant protection machinery and its application techniques. Transactions of the CSAE, 2004; 20(1): 13–15. (in Chinese with English abstract)

Zhang D Y, Lan Y B, Chen L P, Wang X, Liang D. Current status and future trends of agricultural aerial spraying technology in China. Transactions of the CSAM, 2014; 45(10): 54–59. (in Chinese with English abstract)

Fritz B K, Hoffmann W C, Lan Y B, Thomson S J, Huang Y B. Low-level atmospheric temperature inversion: Characteristics and impacts on agricultural applications. Agric. Eng. Int.: The CIGR EJournal X: PM-08-001, 2008.

Faiçal B S, Costa F G, Pessin G, Ueyama J, Freitas H, Colombo A, et al. The use of unmanned aerial vehicles and wireless sensor networks for spraying pesticides. Journal of Systems Architecture, 2014; 60(4): 393–404.

Hoffmann W C, Fritz B K, Lan Y. Evaluation of a proposed drift reduction technology high-speed wind tunnel testing protocol. Journal of ASTM International, 2009; 6(4): 1–10.

Huang Y, Hoffman W C, Lan Y B, Fritz B K, Thomson S J. Development of a low-volume sprayer for an unmanned helicopter. Journal of Agricultural Science, 2014; 7(1): 148–153.

Zhang S C, Xue X Y, Qin W C, Sun Z, Ding S M, Zhou L X. Simulation and experimental verification of aerial spraying drift on N-3 unmanned spraying helicopter. Transactions of the CSAE, 2015; 31(3): 87–93. (in Chinese with English abstract)

Ru Y, Jin L, Zhou H P, Jia Z C. Performance experiment of rotary hydraulic atomizing nozzle for aerial spraying application. Transactions of the CSAE, 2014; 30(3): 50–55. (in Chinese with English abstract)

Huang Y, Thomson S J. Characterization of spray deposition and drift from a low drift nozzle for aerial application at different application altitudes. Int J Agric & Biol Eng, 2011; 4(4): 28–33.

Zhang D Y, Chen L P, Zhang R R, Xu G, Lan Y B, Hoffmann W C, et al. Evaluating effective swath width and droplet distribution of aerial spraying systems on M-18B and Thrush 510G airplanes. Int J Agric & Biol Eng, 2015; 8(2): 21－30.

Fritz B K, Hoffmann W C, Bagley W E, Hewitt A. Field scale evaluation of spray drift reduction technologies from ground and aerial application systems. Journal of ASTM International, 2011; 8(5): 1–11.

Fritz B K, Hoffmann W C, Wolf R E, Bretthauer S, Bagley W E. Wind tunnel and field evaluation of drift from aerial spray applications with multiple spray formulations. Journal of ASTM International, 2012; STP1558-EB, 1–18.

Fritz B K, Hoffmann W C, Bagley W E. Effects of spray mixtures on droplet size (DS) under aerial application conditions and implications on drift. Applied Engineering in Agriculture, 2010; 26(1): 21–29.

Fritz B K, Hoffmann W C, Jank P A. Fluorescent tracer method for evaluating spray transport and fate of field and laboratory spray applications. Journal of ASTM International, 2011; 8(3): 1–9.

Li J Y, Zhou Z Y, Hu L, Zang Y, Yan M L. Optimization of operation parameters for supplementary pollination in hybrid rice breeding using uniaxial single-rotor electric unmanned helicopter. Transactions of the CSAE, 2014; 30(10): 10－17. (in Chinese with English abstract)

Qin W C, Xue X Y, Zhou L X, Zhang S C, Sun Z, Kong W, et al. Effects of spraying parameters of unmanned aerial vehicle on droplets deposition distribution of maize canopies. Transactions of the CSAE, 2014; 30(5): 50–56. (in Chinese with English abstract)

Liao J, Zang Y, Zhou Z Y, Luo X W. Quality evaluation method and optimization of operating parameters in crop aerial spraying technology. Transactions of the CSAE, 2015, 31(Z2): 38–46. (in Chinese with English abstract)

Hu Y G, Liu S Z, Wu W Y, Wang J Z, Shen J W. Optimal flight parameters of unmanned helicopter for tea plantation frost protection. Int J Agric & Biol Eng, 2015; 8(5): 50－57.

Zhou Z Y, Zang Y, Luo X W, Lan Y B, Xue X Y. Technology innovation development strategy on agricultural aviation industry for plant protection in China. Transactions of the CSAE, 2013; 29(24): 1–10. (in Chinese with English abstract)

Huang Y, Hoffmann W C, Lan Y B, Wu W, Fritz B K. Development of a spray system an unmanned aerial vehicle platform. Applied Engineering Agriculture, 2009; 25(6): 803–809.

Xue X Y, Tu K, Qin W C, Lan Y B, Zhang H H. Drift and deposition of ultra-low altitude and low volume application in paddy field. Int J Agric & Biol Eng, 2014; 7(4): 23–28.

Huang Y B, Thomson S J, Hoffmann W C, Lan Y B, Fritz B K. Development and prospect of unmanned aerial vehicle technologies for agricultural production management. Int J Agric & Biol Eng, 2013; 6(3): 1–10.

Yildirim B, Yesiloglu T, Incesu M, Kamiloglu M, Ozguven F, Tuzcu O, et al. The effects of mechanical pruning on fruit yield and quality in ‘Star Ruby’ grapefruit. Journal of Food, Agriculture & Environment, 2010; 8 (2): 834–838.

Martin B M, Castillo I P, Torregrosa A. Effect of mechanical pruning on the yield and quality of ‘Fortune’mandarins. Spanish Journal of Agricultural Research, 2014; 12(4): 952–959.

Qin W C, Xue X Y, Zhou L X, Zhang S C, Sun Z, Kong W, et al. Effects of spraying parameters of unmanned aerial vehicle on droplets deposition distribution of maize canopies. Transactions of the CSAE, 2014, 30(5): 50–56. (in Chinese with English abstract)

Yıldırım B, Yeşiloğlu T, İncesu M, Kamiloğlu M, Özgüven F, Tuzcu Ö, et al. The effects of mechanical pruning on fruit yield and quality in ‘Star Ruby’grapefruit. Journal of Food, Agriculture & Environment, 2010; 8(2): 834–838.

Martin-Gorriz B, Castillo I P, Torregrosa A. Effect of mechanical pruning on the yield and quality of ‘Fortune’mandarins. Spanish Journal of Agricultural Research, 2014; 12(4): 952–959.

Xu L, Zhu H, Ozkan H E, Bagley W E, Krause C R. Droplet evaporation and spread on waxy and hairy leaves associated with type and concentration of adjuvants. Pest Management Science, 2011; 67(7): 842–851.

Yuan H Z, Wang Z Q, Sun R H, Li S F, Dong Z, Sun L P. Influences of nozzle type and spray adjuvant on the distribution of spray droplets with stretcher mounted sprayer in peach orchards. Plant Protection, 2010; 1: 106–109.

Ru Y, Zhou H P, Shu C R. Deposition evaluation of aerial electrostatic spraying system assembled in fixed-wing. Applied Engineering in Agriculture, 2014; 30(5): 751–757.

Shu C R, Pan H Y, Zhou H P, Zhan M, Mei A H, Ru Y, et al. Deposition effects of electrostatic and non-electrostatic aerial spray. Scientia Silvae Sinicae, 2012; 48(4): 75–80




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