Apple orchard frost protection with wind machine operation

2006 ◽  
Vol 141 (2-4) ◽  
pp. 71-81 ◽  
Author(s):  
António C. Ribeiro ◽  
J. Paulo De Melo-Abreu ◽  
Richard L. Snyder
2021 ◽  
Vol 13 (2) ◽  
pp. 273
Author(s):  
Wenan Yuan ◽  
Daeun Choi

Frost is a natural disaster that can cause catastrophic damages in agriculture, while traditional temperature monitoring in orchards has disadvantages such as being imprecise and laborious, which can lead to inadequate or wasteful frost protection treatments. In this article, we presented a heating requirement assessment methodology for frost protection in an apple orchard utilizing unmanned aerial vehicle (UAV)-based thermal and RGB cameras. A thermal image stitching algorithm using the BRISK feature was developed for creating georeferenced orchard temperature maps, which attained a sub-centimeter map resolution and a stitching speed of 100 thermal images within 30 s. YOLOv4 classifiers for six apple flower bud growth stages in various network sizes were trained based on 5040 RGB images, and the best model achieved a 71.57% mAP for a test dataset consisted of 360 images. A flower bud mapping algorithm was developed to map classifier detection results into dense growth stage maps utilizing RGB image geoinformation. Heating requirement maps were created using artificial flower bud critical temperatures to simulate orchard heating demands during frost events. The results demonstrated the feasibility of the proposed orchard heating requirement determination methodology, which has the potential to be a critical component of an autonomous, precise frost management system in future studies.


1994 ◽  
Vol 10 (5) ◽  
pp. 669-675 ◽  
Author(s):  
L. W. Heisey ◽  
P. H. Heinemann ◽  
C. T. Morrow ◽  
R. M. Crassweller

1977 ◽  
Vol 57 (1) ◽  
pp. 71-74 ◽  
Author(s):  
R. L. DAVIS

Wind machine tests were conducted in an Osoyoos, British Columbia, apple orchard on 6 spring nights during 1974. The magnitude of the temperature response observed was inversely proportional to the distance from the wind machine. It was determined that with temperature inversions of 5–7 C, some degree of frost protection could be provided over 3.2–3.6 h with a wind machine similar to that tested.


2016 ◽  
Vol 70 (10) ◽  
pp. 1044-1048
Author(s):  
Hiroki Katsura ◽  
Takashi Saigusa ◽  
Katsuhiko Hidaka ◽  
Kaname Harada ◽  
Shinichi Kurihara

2008 ◽  
Vol 62 (8) ◽  
pp. 941-948
Author(s):  
Koichi Tadaki ◽  
Tomoko Asada ◽  
Hideaki Kawakami ◽  
Kazutaka Kasuga ◽  
Shigeru Kurose

1995 ◽  
Vol 5 (4) ◽  
pp. 332-338
Author(s):  
Schuyler S. Korban ◽  
Cynthia A. St. Ores

“OrchardSim: Design of an Apple Orchard” is a computer simulation program that was developed as a tool for students and new apple growers to understand the process involved in designing an efficient apple orchard. This program was developed on Toolbook software. It explores key elements involved in designing an apple orchard. Users are introduced to these elements and then asked to make selections for each of the following parameters: soil type, cultivar, rootstock, and management system. The goal of the program is to find compatible selections that will result in an appropriate design of a 1-acre orchard. This full-color program uses text, graphics animation, and still pictures to provide the following: introductory and review information about each parameter, opportunities for the user to make a selection for each parameter, and a check for choices made to determine compatibility. Users receive feedback for each specific choice made for each of the parameters throughout the program. This simulation presents an alternative instructional tool, whereby the user plays an active role in the learning process by practicing and reviewing information at one's own pace. OrchardSim provides users with immediate feedback and an excellent opportunity for making high-risk decisions, with no financial loss that otherwise would have been costly if the learning process were pursued in the real orchard.


2021 ◽  
Vol 734 (1) ◽  
pp. 012030
Author(s):  
Ruiyan Li ◽  
Mingxiu Gao ◽  
Zexin XU ◽  
Jiafan Wang ◽  
Xiaoxin Xie

1981 ◽  
Vol 24 ◽  
pp. 1-9 ◽  
Author(s):  
B.J. Barfield ◽  
L.R. Walton ◽  
R.E. Lacey
Keyword(s):  

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