通过紫外线荧光和杂草数量变化对多通道喷雾沉积模式进行空间评估的方法

IF 2 3区 农林科学 Q2 AGRONOMY Crop Science Pub Date : 2024-10-09 DOI:10.1002/csc2.21377
Daewon Koo, Navdeep Godara, Juan R. Romero Cubas, Shawn D. Askew
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引用次数: 0

摘要

农用喷雾器的喷雾沉积模式传统上是沿着田间横断面离散取样,占处理面积的 0.5% 或更少。这种方法可能无法完全捕捉到大规模、多次喷洒过程中固有的尺寸变化,尤其是农用无人喷洒机(ASD)上的变化。本研究调查了利用紫外线荧光染料和夜间航空成像技术评估大规模、多通道喷雾沉积模式的情况。通过荧光测定法对处理前放置的 384 个培养皿中提取的紫外荧光染料的强度水平进行评估,确认了紫外荧光摄影的数字色调在预测代理染料沉积方面的准确性。结果表明,与乘座式喷雾器相比,无论喷嘴类型如何,自动喷洒装置的应用在目标区域内都表现出更大的空间变异性,这主要是由于过度喷洒造成的。此外,自动喷洒器对邻近非目标区域产生的喷雾漂移至少是乘骑式喷洒器和喷枪式喷洒器的三倍。在使用多通道自动喷洒器或手持式四喷头喷杆喷洒喹啉草酯或托吡酯后,通过原位光滑蟹草侵扰进一步评估了多通道沉积。根据地面分辨率为 9.3-dm2 的叠加网格标注的杂草侵扰情况,在沿每个喷洒器喷洒区域的中心和边缘评估的横断面之间检测到的空间异质性并不一致。与手持式喷雾器相比,自动喷洒器对平滑蟹草的控制率提高了 11%,但喷洒到非目标区域的漂移增加了 18%,这与紫外线荧光研究结果类似。数字评估荧光摄影的平均色调似乎是评估喷雾沉积的多维和连续空间关系的一种可行方法。
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A method to spatially assess multipass spray deposition patterns via UV fluorescence and weed population shifts
Spray deposition patterns from agricultural sprayers are traditionally sampled discretely along a field transect accounting for 0.5% or less of the treated area. Such methods may not fully capture the dimensional variability inherent in large‐scale, multiple‐pass spray applications, especially evident from an agricultural spray drone (ASD). This study investigated the utilization of UV‐fluorescent dye and nighttime aerial imaging techniques to assess large‐scale, multipass spray deposition patterns. Accuracy of digital hue from UV‐fluorescent photography to predict deposition of proxy dye was confirmed via fluorometry assessed intensity levels of extracted UV‐fluorescent dye from 384 Petri dishes placed prior to treatment. Results showed that ASD applications, regardless of nozzle type, exhibited greater spatial variability within the target area compared to ride‐on sprayer applications, primarily due to overapplication. Additionally, the ASD generated spray drift to adjacent nontarget areas that was at least three times more than that of ride‐on and spray‐gun sprayers. Multipass deposition was further assessed via in situ smooth crabgrass infestation following treatment with quinclorac or topramezone by multipass ASD or hand‐held, four‐nozzle spray boom. Weed infestation annotated from overlaid grids with 9.3‐dm2 ground resolution inconsistently detected spatial heterogeneity between transects assessed along the center and edge of each sprayer pass. The ASD controlled smooth crabgrass 11% more than the hand‐held sprayer, albeit with an 18% increase in spray drift to nontarget areas, similar to the UV‐fluorescence study. Digitally assessed average hue of fluorescence photography appears to be a viable method to assess multidimensional and continuous spatial relationships of spray deposition.
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来源期刊
Crop Science
Crop Science 农林科学-农艺学
CiteScore
4.50
自引率
8.70%
发文量
197
审稿时长
3 months
期刊介绍: Articles in Crop Science are of interest to researchers, policy makers, educators, and practitioners. The scope of articles in Crop Science includes crop breeding and genetics; crop physiology and metabolism; crop ecology, production, and management; seed physiology, production, and technology; turfgrass science; forage and grazing land ecology and management; genomics, molecular genetics, and biotechnology; germplasm collections and their use; and biomedical, health beneficial, and nutritionally enhanced plants. Crop Science publishes thematic collections of articles across its scope and includes topical Review and Interpretation, and Perspectives articles.
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