Mechanical harvest and in-field handling of tree fruit crops.

2018 ◽  
pp. 179-233
Author(s):  
M. Karkee ◽  
A. Silwal ◽  
J. R. Davidson
Keyword(s):  
Fruit Crops ◽  
Tree Fruit

WILD BEE POLLINATOR DIVERSITY AND ABUNDANCE IN ORCHARD AND UNCULTIVATED HABITATS IN THE OKANAGAN VALLEY, BRITISH COLUMBIA

1987 ◽  
Vol 119 (7-8) ◽  
pp. 735-745 ◽  
Author(s):  
Cynthia D. Scott-Dupree ◽  
Mark L. Winston
Keyword(s):  
Fruit Crops ◽  
Wild Bees ◽  
Osmia Lignaria ◽  
Flower Visitation ◽  
Wild Bee ◽  
Tree Fruit ◽  
Floral Visitation ◽  
Abundance And Diversity ◽  
Fruit Orchards ◽  
Okanagan Valley

AbstractWild bee pollinators were collected in tree-fruit orchards and uncultivated habitats in the Okanagan Valley. Higher abundance and diversity of wild bee pollinators were found at uncultivated sites than on tree-fruit crops. Wild bees were not abundant enough in orchard habitats to provide adequate tree-fruit pollination. Variable flower visitation patterns by polylectic bees in orchard and uncultivated habitats make it difficult to predict floral visitation patterns. Therefore, orchardists cannot rely on a substantial and predictable contribution to pollination of fruit crops by wild bee species. Research into the use of wild bees as managed pollinators for tree-fruit crops in the Okanagan Valley may have potential. Future studies should consider three wild bee species collected in Okanagan Valley orchards, Bombus terricola occidentalis Greene, Bombus bifarius nearcticus Handlirsch, and Osmia lignaria propinqua Cresson, for pollination management.

scholarly journals Effects of the Fall Foliar Urea Application on N Reserves and Fruiting Performance of Gala/M26 Apple Trees in Pot-in-Pot System

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 796A-796
Author(s):  
Pinghai Ding* ◽  
Minggang Cui ◽  
Leslie H. Fuchigami
Keyword(s):  
Fruit Set ◽  
Foliar Application ◽  
Fruit Size ◽  
Growing Season ◽  
Fruit Crops ◽  
Apple Trees ◽  
Fruit Thinning ◽  
Tree Fruit ◽  
Dormant Season ◽  
Foliar Urea

Reserve nitrogen is an important factor for plant growth and fruiting performance in tree fruit crops. The fall foliar urea application appears to be an efficient method for increasing N reserves. The effect of fall foliar urea application on N reserves and fruiting performance were studied with four year old `Gala'/M26 trees grown in 20 gallon containers in a pot-in-pot system from 2001 to 2003 at the Lewis-Brown Horticulture Farm of Oregon State Univ.. The trees were either sprayed with 0 or 2 times 3% urea after harvest in October. Shoot and spur samples were taken at the dormant season for reserve N analysis. Fruit performance was recorded in the following growing season. The fall foliar application significantly increased spur N reserve and had the trend to increase shoot N reserve but not significantly. The fall foliar application significantly increased tree fruit set and cluster fruit set. With normal fruit thinning, fall foliar urea application has the trend to increase both tree yield and average fruit size; without fruit thinning, fall foliar urea application has the trend to increase tree yield. These results indicate that fall foliar urea application an effective method to increase reserve N for maintaining tree yield.

Machinery-Canopy Interactions in Tree Fruit Crops

2021 ◽  
pp. 415-442
Author(s):  
Xin Zhang ◽  
Qin Zhang ◽  
Manoj Karkee ◽  
Matthew D. Whiting
Keyword(s):  
Fruit Crops ◽  
Tree Fruit

Breeding rootstocks for tree fruit crops

1995 ◽  
Vol 23 (4) ◽  
pp. 395-402 ◽  
Author(s):  
James N. Cummins ◽  
Herb S. Aldwinckle
Keyword(s):  
Fruit Crops ◽  
Tree Fruit

Evaluation of mobile 3D light detection and ranging based canopy mapping system for tree fruit crops

2019 ◽  
Vol 158 ◽  
pp. 284-293 ◽  
Author(s):  
Momtanu Chakraborty ◽  
Lav R. Khot ◽  
Sindhuja Sankaran ◽  
Pete W. Jacoby
Keyword(s):  
Light Detection And Ranging ◽  
Fruit Crops ◽  
Light Detection ◽  
Mapping System ◽  
Tree Fruit

scholarly journals Sensing and Automation in Pruning of Tree Fruit Crops: A Review

2018 ◽  
Author(s):  
Long He ◽  
James Schupp
Keyword(s):  
3D Structure ◽  
Fruit Production ◽  
Robotic Systems ◽  
Fruit Crops ◽  
Short Supply ◽  
End Effector ◽  
Tree Fruit ◽  
Structure Reconstruction ◽  
Human Labor ◽  
Tree Branch

Pruning is one of the most important tree fruit production activities, which is highly dependent on human labor. Skilled labor is in short supply, and the increasing cost of labor is becoming a big issue for the tree fruit industry. Growers are motivated to seek mechanical or robotic solutions for reducing the amount of hand labor required for pruning. This paper reviews the research and development of sensing and automated systems for branch pruning for tree fruit production. Horticultural advancements, pruning strategies, 3D structure reconstruction of tree branches, as well as practice mechanisms or robotics are some of the developments that need to be addressed for an effective tree branch pruning system. Our study summarizes the potential opportunities for automatic pruning with machine-friendly modern tree architectures, previous studies on sensor development, and efforts to develop and deploy mechanical/robotic systems for automated branch pruning. We also describe two examples of qualified pruning strategies that could potentially simplify the automated pruning decision and pruning end-effector design.  Finally, the limitations of current pruning technologies and other challenges for automated branch pruning are described, and possible solutions are discussed.

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