Cotton Science

Effects of adjuvants on physicochemical properties of nanopesticide applied by plant protection unmanned aerial vehicles and control of aphids in cotton field

Hu Hongyan, Ma Yajie, Shan Yongpan, Song Xianpeng, Wang Dan, Ren Xiangliang, Li Jie, Niu Yibo, Wu Changcai, Ma Xiaoyan, Ma Yan

Cotton Science, 2023, 35(3): 239-250. DOI: 10.11963/cs20220033

农药配方 Formulation of pesticide	样品编号 Sample number	粒径大小 Size/nm	平均粒径 Average size/nm
10%烯啶虫胺水剂+20%呋虫胺可溶粒剂	1	358.70	348.78±5.32 a
Nitenpyram 10% aqueous solutions + dinotefuran 20% soluble granule	2	347.17
	3	340.47
8%烯啶虫胺·呋虫胺纳米农药	1	10.95	10.90±0.04 b
8% Nitenpyram·dinotefuran nanopesticide	2	10.94
	3	10.82

Table 1 Particle size of nanopesticide and conventional pesticide

Other figure/table from this article

Fig. 1 Plant protection unmanned aerial vehicle (UAV) spraying test (A) and droplet test card layout (B)
Fig. 2 Static surface tension (A) and dynamic surface tension (B) of spray solutions
Fig. 3 Dynamic contact angle (A) and morphological changes (B) over time of droplet on cotton leaves
Table 2 Comparison of the wetting area and droplet evaporation performance at 33 ℃ of each treatment solution
Fig. 4 Comparison of the droplet density (A) and droplet size (B) among nanopesticide treatments at different positions of the cotton canopy Different small letters above the same set of bars represent significant differences (P < 0.05).
Fig. 5 Comparison of the control efficacy on cotton aphids among nanopesticide treatments NF and RNF mean plant protection unmanned aerial vehicles (UAV) spray conventional dosage and 20% reduced dosage of nanopesticide, respectively; A1, A2 and A3 mean adjuvants Youruopai, Jiexiaofeng and Aero-mate 320, respectively; CM means manual spray conventional pesticide. Different small letters above the same set of bars represent significant differences among the different treatments at the same survey time (P < 0.05).