The computer-aided teaching of apple tree pruning and training

2017 ◽  
Vol 25 (4) ◽  
pp. 568-577 ◽  
Author(s):  
Simon Kolmanič ◽  
Stanislav Tojnko ◽  
Tatjana Unuk ◽  
Štefan Kohek
Keyword(s):  
Apple Tree ◽  
Computer Aided ◽  
Tree Pruning ◽  
And Training

Phlyctaena vagabunda Desm., Pezicula malicorticis (Jackson) Nannf., and other fungi associated with apple twigs

1971 ◽  
Vol 11 (49) ◽  
pp. 254
Author(s):  
LJ Penrose
Keyword(s):  
Botrytis Cinerea ◽  
Apple Tree ◽  
New South ◽  
New South Wales ◽  
First Record ◽  
Apple Fruit ◽  
Source Of Infection ◽  
South Wales ◽  
Tree Pruning

The apple fruit rotting fungi Phlyctaena vagabunda, Pezicula malicorticis and Botrytis cinerea were isolated from apple tree pruning stubs or cankers. This report constitutes the first record of Pezicula malicorticis in New South Wales. It is suggested that pruning stubs provide the source of infection for fruit rots caused by these fungi.

Development of a Robotic End-Effector for Apple Tree Pruning

2020 ◽  
Vol 63 (4) ◽  
pp. 847-856 ◽  
Author(s):  
Azlan Zahid ◽  
Long He ◽  
Lihua Zeng ◽  
Daeun Choi ◽  
James Schupp ◽  
...  
Keyword(s):  
Cutting Force ◽  
Apple Tree ◽  
Field Tests ◽  
Force Sensor ◽  
Pneumatic Cylinder ◽  
List Type ◽  
End Effector ◽  
Wide Range ◽  
Simulation Results ◽  
Tree Pruning

HighlightsAn end-effector with two degrees of freedom (2R) was developed for pruning apple trees.A rational 2×2 relationship (R2 = 0.93) was found for ‘Fuji’ apple tree branch diameter and cutting force.Simulation showed that the cutter can be aligned in a wide range of orientations in a spherical workspace.The developed end-effector was able to cut branches up to 12 mm in diameter.Abstract. Robotics and automation technologies are now used extensively in agriculture, while production operations for tree fruit crops still largely depend on manual labor. Manual pruning is a labor-intensive and costly task in apple production. Robotic pruning is a potential solution, but it involves several challenges due to the unstructured work environment. This study focused on designing an end-effector prototype for pruning considering the maneuvering, spatial, mechanical, and horticultural requirements. Branch cutting force was measured with a thin force sensor to provide guidelines for the end-effector design. The test results indicated the relationship between the force required to cut different diameter branches with an R2 value of 0.93. The end-effector was developed using two rotary motors, a pneumatic cylinder, and a pair of bypass shear blades. A three-directional linear manipulator system and a control system were built for moving the end-effector to targeted locations. A mathematical model was developed for simulation of the workspace utilization and reachable points of the end-effector. The simulation results indicated that the end-effector can be aligned in a wide range of orientations of the cutter. Field tests were conducted for validation of the simulation results and performance assessment of the end-effector. The results indicated that the end-effector with the current parameter settings successfully cut branches up to 12 mm in diameter and was able to cut branches in a wide range of possible orientations in a given 3D space. The robotic end-effector developed in this study is a core component of an automated pruning system for fruit trees. In future work, an integrated manipulator system will be developed for branch accessibility with collision-free trajectories. Keywords: Malus × domestica (Borkh.), Pruning end-effector, Reachable-points simulation, Tree pruning.

<i>Development of a Robotic End Effector for Apple Tree Pruning</i>

2019 ◽  
Author(s):  
Azlan Zahid ◽  
Long He ◽  
Lihua Zeng
Keyword(s):  
Apple Tree ◽  
End Effector ◽  
Tree Pruning

Hand Pruning and Training of Tropical and Subtropical Fruit Trees

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Jeff Wasielewski ◽  
Jonathan Henry Crane ◽  
Carlos Balerdi
Keyword(s):  
Size Control ◽  
Fruit Trees ◽  
Hand Tools ◽  
Wind Events ◽  
Subtropical Fruit ◽  
Tree Pruning ◽  
And Training

This new 6-page document explains the proper way to prune fruit trees using hand tools. An important aspect of growing tropical and subtropical fruit trees is size control through pruning. In addition to size control, pruning also makes it easier to spray the tree and harvest fruit from the tree. Pruning also makes the tree more hardy to wind events and healthier in general because you can remove damaged or unhealthy parts of the tree. Written by Jeff Wasielewski, Jonathan Crane, and Carlos Balerdi, and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1372

A Novel Serious Game for Education and Training of Computer-Aided Manufacturing (CAM) Programming

2021 ◽  
Author(s):  
Aggelos Marinakis ◽  
Anastasia Katsamaki ◽  
Ioanna Pateraki ◽  
Evangelos Nikolidakis ◽  
Aristomenis Antoniadis
Keyword(s):  
Education And Training ◽  
Serious Game ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
And Training
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