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1. Dynamics calculation with variable mass of mountain self-propelled chassis

Author:
Makharoblidze, R.M.; Lagvilava, I.M.; Basilashvili, B.B.; Khazhomia, R.M.
Source:
Annals of Agrarian Science 2016 v.14 no.4 pp. 340-342
ISSN:
1512-1887
Subject:
harvesting,   etc   ; automation; dusting; equations; fruits; planting; pressing; spraying; tractors;     Show all 9 Subjects
Abstract:
... Many technological processes in the field of agricultural production mechanization, such as a grain crop, planting root-tuber fruits, fertilizing, spraying and dusting, pressing feed materials, harvesting of various cultures, etc. are performed by the machine-tractor units with variable mass of links or processed media and materials. In recent years, are also developing the systems of automatic co ...
DOI:
10.1016/j.aasci.2016.10.006

2. Evaluation of bruise resistance of pears to impact load

Author:
Komarnicki, P.; Stopa, R.; Szyjewicz, D.; Młotek, M.
Source:
Postharvest biology and technology 2016 v.114 pp. 36-44
ISSN:
0925-5214
Subject:
harvesting,   etc   ; computer analysis; fruits; growers; mechanical properties; pears; water content;     Show all 7 Subjects
Abstract:
... The main cause of bruises resulting in loss for fruit growers are dynamic and impact type loads to which fruit is exposed during harvesting, loading and transport. Due to the characteristic shape of the contact plane of the fruit during the impact with the hard surface of e.g., a box or another fruit, there appears a problem of pressure force concentrated in a small area, leading to local exceedin ...
DOI:
10.1016/j.postharvbio.2015.11.017

3. Light Relations in a Plum Orchard Trellised Horizontally in Comparison with Standard, Central Leader Training

Author:
Mika, Augustyn; Buler, Zbigniew
Source:
Journal of Horticultural Research 2016 v.24 no.2 pp. 31-36
ISSN:
2353-3978
Subject:
mechanical harvesting,   etc   ; canopy; fruits; horticulture; lighting; orchards; photosynthesis; planting; plums; trees;     Show all 10 Subjects
Abstract:
... Plum trees of ‘Elena’, designed for mechanical harvesting with a straddle self-propelled harvester, were planted in 2008 in the experimental orchard at Dąbrowice at a distance of 4 × 1.5 and 2.0 m. The trees were trained to a central leader to a height of 2.7 m and 1.5 or 2.0 m spread. Plum trees designed for mechanical harvesting with a small tractor-driven harvester were spaced at 4 × 1.0 or 1.5 ...
DOI:
10.1515/johr-2016-0018

4. Field test of different end-effectors for robotic harvesting of sweet-pepper

Author:
Hemming, J.; van Tuijl, B. A. J.; Gauchel, W.; Wais, E.
Source:
Acta horticulturae 2016 no.1130 pp. 567-574
ISSN:
0567-7572
Subject:
harvesting,   etc   ; cameras; color; field experimentation; fruits; greenhouses; leaves; lighting; peduncle; plant damage; robots;     Show all 11 Subjects
Abstract:
... This paper focusses on field experiments with two different types of end-effectors for robotic harvesting of sweet-pepper fruits. One of the major issues is to reach, grasp and detach the fruit efficiently, without damaging it, while avoiding obstacles in the environment. End-effectors for harvesting fruit must be able to adapt to different fruit sizes and geometries. Two types of end-effectors we ...
DOI:
10.17660/ActaHortic.2016.1130.85

5. Gradual release of PGRs by dispenser application to control suckers in 'Fuji Suprema' apple trees

Author:
Meyer, G. A.; Rufato, L.; Talamini, J. de A.; Bueno, M. E.; Rufato, A. de R.; Kretzschmar, A. A.
Source:
Acta horticulturae 2016 no.1130 pp. 317-322
ISSN:
0567-7572
Subject:
harvesting,   etc   ; Malus domestica; branches; budbreak; buds; fruits; naphthaleneacetic acid; pesticides; prohexadione calcium; shoots; solar radiation; Brazil;     Show all 12 Subjects
Abstract:
... The use of growth regulators in controlling the growth of apple trees reduces pruning costs, improves efficiency of pesticide treatments and harvesting of fruits. Apple tree bending of new branches is common practice to increase the number of productive structures and the higher incidence of solar radiation and facilitates other cultural practices. However, the present buds formed at the bending i ...
DOI:
10.17660/ActaHortic.2016.1130.47

6. 3D pose estimation of green pepper fruit for automated harvesting

Author:
Eizentals, Peteris; Oka, Koichi
Source:
Computers and electronics in agriculture 2016 v.128 pp. 127-140
ISSN:
0168-1699
Subject:
harvesting,   etc   ; algorithms; automatic detection; cutting; fruits; greenhouses; laboratory experimentation; lidar; sweet peppers;     Show all 9 Subjects
Abstract:
... This paper presents a novel pose estimation algorithm for stem position detection in Japanese green pepper automatic harvesting. When the available visual cues do not provide sufficient information to the harvesting robot, information about the pose of the fruit in space is necessary for accurate stem position detection. In the proposed method the orientation of a fruit in space is obtained by fit ...
DOI:
10.1016/j.compag.2016.08.024

7. Evolution of factors affecting mechanical olive harvesting

Author:
Almeida, A.; Figueiredo, T.; Fernades-Silva, A.
Source:
Acta horticulturae 2016 no.1139 pp. 575-580
ISSN:
0567-7572
Subject:
mechanical harvesting,   etc   ; cultivars; farm income; field experimentation; fruits; olives; orchards; ripening; tree shakers; trees; Portugal;     Show all 11 Subjects
Abstract:
... Harvest efficiency is defined as the percentage of fruits harvested by total production. The percentage of fruits harvested is less than 100% when working with trunk shakers to detach olives. It is important to increase the percentage of fruits harvested in order to increase farmer's income. This objective can be achieved knowing the evolution of the main factors affecting fruit detachment. Fruit ...
DOI:
10.17660/ActaHortic.2016.1139.99

8. Three types of rind coloring in response to fruit bagging in new citrus cultivars

Author:
Takishita, F.; Nonaka, K.; Imai, A.; Hamada, H.
Source:
Acta horticulturae 2016 no.1135 pp. 131-138
ISSN:
0567-7572
Subject:
harvesting,   etc   ; Citrus; bags; color; cultivars; fruits; market value; solar radiation; winter;     Show all 9 Subjects
Abstract:
... In some citrus cultivars released from NIFTS, rind color degradation before harvest is a serious problem. Once rind color forms, it degenerates along a decreasing temperature gradient in winter. This phenomenon occurs in cultivars like 'Setoka'. If the rind color degradation occurs, market value is lost. This study investigated the influence of bagging colors on rind color parameters in 10 citrus ...
DOI:
10.17660/ActaHortic.2016.1135.16

9. Colour-agnostic shape-based 3D fruit detection for crop harvesting robots

Author:
Barnea, Ehud; Mairon, Rotem; Ben-Shahar, Ohad
Source:
Biosystems engineering 2016 v.146 pp. 57-70
ISSN:
1537-5110
Subject:
harvesting,   etc   ; color; computer vision; data collection; fruits; image analysis; leaves; lighting; robots; sweet peppers;     Show all 10 Subjects
Abstract:
... Most agricultural robots, fruit harvesting systems in particular, use computer vision to detect their fruit targets. Exploiting the uniqueness of fruit colour amidst the foliage, almost all of these computer vision systems rely on colour features to identify the fruit in the image. However, often the colour of fruit cannot be discriminated from its background, especially under unstable illuminatio ...
DOI:
10.1016/j.biosystemseng.2016.01.013

10. Fruit Characteristics and Detachment Parameters of Sour Cherry (Prunus cerasus L. cv. ‘Kütahya’) as Affected by Various Maturity Stages

Author:
Aslantas, Rafet; Angin, Ilker; Gokalp Boydas, Mustafa; Ozkan, Gursel; Kara, Mazhar
Source:
Erwerbs-Obstbau 2016 v.58 no.2 pp. 127-134
ISSN:
0014-0309
Subject:
harvesting,   etc   ; Prunus cerasus; color; fruit maturity; fruit quality; fruits; specific energy; total soluble solids; trees;     Show all 9 Subjects
Abstract:
... The variability in fruit maturity and quality has difficulties in determining the optimal harvesting maturity. Therefore, maturity stage in harvest is crucial for both fruit quality and minimizing the fruit detachment force. This study investigates the fruit characteristics and detachment parameters of sour cherry (cv. ‘Kütahya’) in terms of different maturity stages. Sour cherries were grouped in ...
DOI:
10.1007/s10341-016-0270-1

11. Analysis of shaking-induced cherry fruit motion and damage

Author:
Zhou, Jianfeng; He, Long; Karkee, Manoj; Zhang, Qin
Source:
Biosystems engineering 2016 v.144 pp. 105-114
ISSN:
1537-5110
Subject:
mechanical harvesting,   etc   ; Prunus avium; cameras; cherries; fresh market; fruits; plant damage; vibration;     Show all 8 Subjects
Abstract:
... High percentage of shaking-induced fruit damage is the major obstacle for mechanical harvesting of fresh-market sweet cherry. This study focused on the evaluation of the effect of vibration frequency on fruit motion, detaching time and damage during mechanical cherry harvesting with a shaker. A high-speed camera was used to capture the fruit trajectory on eighteen limbs excited at the frequencies ...
DOI:
10.1016/j.biosystemseng.2016.02.007
Chorus Open Access:
10.1016/j.biosystemseng.2016.02.007

12. Effect of catching surface and tilt angle on bruise damage of sweet cherry due to mechanical impact

Author:
Zhou, Jianfeng; He, Long; Karkee, Manoj; Zhang, Qin
Source:
Computers and electronics in agriculture 2016 v.121 pp. 282-289
ISSN:
0168-1699
Subject:
mechanical harvesting,   etc   ; Prunus avium; bruising (plant); cameras; deformation; fresh market; fruit drop; fruits;     Show all 8 Subjects
Abstract:
... Fruit bruise damage induced by mechanical impact is the most critical obstacle for the application of mechanical harvesting on fresh-market sweet cherries. One of main sources of fruit bruise is the mechanical impact by fruit catching surfaces occurring in fruit collection during mechanical harvesting. The goal of this research was to investigate the effect of cushion material, fruit drop height, ...
DOI:
10.1016/j.compag.2016.01.004
Chorus Open Access:
10.1016/j.compag.2016.01.004

13. Promotion of gold kiwifruit 'Haegeum' (Actinidia chinensis Planch.) maturity using plastic house cultivation

Author:
Cho, Younsup; Cho, Hyesung; Park, Moonyoung; Kim, Eunsik; Lim, Donggeun; Jung, Byeongjoon
Source:
Acta horticulturae 2016 no.1130 pp. 345-350
ISSN:
0567-7572
Subject:
harvesting,   etc   ; Actinidia chinensis; cold storage; color; dry matter content; fruit quality; fruits; growers; kiwifruit; marketing; shipping; temperature; vines;     Show all 13 Subjects
Abstract:
... 'Haegeum', a Korean gold kiwifruit, arrives at the critical hue angle (103°) for harvest earlier than 'Hort16A', which is a dominant gold kiwifruit in the market. However, some growers want to harvest even earlier with good internal colour for advanced shipping. In an attempt to promote earlier internal yellow colour expression of gold kiwifruit, 'Haegeum' vines were cultivated in a plastic vinyl ...
DOI:
10.17660/ActaHortic.2016.1130.52

14. Field evaluation of a mechanical-assist cherry harvesting system

Author:
Zhou, Jianfeng; He, Long; Whiting, Matthew; Amatya, Suraj; Larbi, Peter A.; Karkee, Manoj; Zhang, Qin
Source:
Engineering in agriculture, environment and food 2016 v.9 no.4 pp. 324-331
ISSN:
1881-8366
Subject:
mechanical harvesting,   etc   ; Prunus avium; canopy; cherries; engineering; fresh market; fruits; industry; labor; ladders; orchards; pedicel; plant damage; trees;     Show all 14 Subjects
Abstract:
... Mechanical harvest is one promising method to mitigate the labor pressure in fresh-market tree fruit industries. Due to the difficulty in adopting fully mechanical harvesting technologies in most of the current existing canopy architectures, this study aimed to evaluate the feasibility of a mechanical-assist shake-and-catch system to harvest sweet cherries in a large range of commercial orchards. ...
DOI:
10.1016/j.eaef.2016.05.003
Chorus Open Access:
10.1016/j.eaef.2016.05.003

15. Estimation of fruit locations in orchard tree canopies using radio signal ranging and trilateration

Author:
Arikapudi, Rajkishan; Vougioukas, Stavros G.; Jiménez-Jiménez, Francisco; Anjom, Farangis Khosro
Source:
Computers and electronics in agriculture 2016 v.125 pp. 160-172
ISSN:
0168-1699
Subject:
harvesting,   etc   ; Monte Carlo method; data collection; fruits; georeferencing; gloves; growers; harvesters; open space; orchards; peaches; pears; radio; robots; trees; California;     Show all 16 Subjects
Abstract:
... The development of novel robotic harvesters could benefit significantly from a model-based design approach, in which harvesting performance metrics—such as fruit reachability and average pick-and-place cycle—are calculated via simulation, and are used to guide mechanical design. The actual spatial distributions of fruits on orchard trees are necessary for such an approach. Reported methods for mea ...
DOI:
10.1016/j.compag.2016.05.004
Chorus Open Access:
10.1016/j.compag.2016.05.004

16. Variation of lycopene and beta-carotene contents after harvesting of gac fruit and its prediction

Author:
Bhumsaidon, Apinya; Chamchong, Montip
Source:
Agriculture and natural resources 2016 v.50 no.4 pp. 257-263
ISSN:
2452-316X
Subject:
harvesting,   etc   ; Momordica cochinchinensis; aril; beta-carotene; color; equations; fruits; lycopene; natural resources; phytonutrients; prediction; storage time; Thailand;     Show all 13 Subjects
Abstract:
... The effects were investigated of three different stages of harvesting, the storage time and sample preparation methods before extraction using a Waring blender (WBM) or ball mill (BMM) on the lycopene and β-carotene contents from the gac aril. It was found that after harvesting and being stored at 26 ± 1 °C and 24±1% RH for 15 d, the lycopene contents from the color break, medium ripe and fully ri ...
DOI:
10.1016/j.anres.2016.04.003

17. Detection of red and bicoloured apples on tree with an RGB-D camera

Author:
Nguyen, Tien Thanh; Vandevoorde, Koenraad; Wouters, Niels; Kayacan, Erdal; De Baerdemaeker, Josse G.; Saeys, Wouter
Source:
Biosystems engineering 2016 v.146 pp. 33-44
ISSN:
1537-5110
Subject:
harvesting,   etc   ; algorithms; apples; branches; cameras; color; cost effectiveness; fruits; image analysis; leaves; monitoring; orchards; researchers; robots; solar radiation; trees;     Show all 16 Subjects
Abstract:
... Recognising and accurately locating fruits on a tree is a critical challenge in developing fruit-by-fruit robotic harvesting. Many researchers have investigated the potential of red, green, blue (RGB) colour imaging for this purpose, but have had limited success due to the occlusion of the target fruits by foliage, branches or other fruits as well as due to the non-uniform and unstructured nature ...
DOI:
10.1016/j.biosystemseng.2016.01.007

18. The effect of within-year variation in acorn crop size on seed harvesting by avian hoarders

Author:
Pesendorfer, Mario B.; Koenig, Walter D.
Source:
Oecologia 2016 v.181 no.1 pp. 97-106
ISSN:
0029-8549
Subject:
harvesting,   etc   ; Aphelocoma californica; Melanerpes formicivorus; Quercus lobata; crops; foraging; fruits; seed dispersal; seeds; simulation models; temporal variation; trees; woodpeckers;     Show all 13 Subjects
Abstract:
... Spatial and temporal variation in resource distribution affect the movement and foraging behavior of many animals. In the case of animal-dispersed trees, numerous studies have addressed masting—the synchronized variation in seed production between years—but the fitness consequences of spatial variation in seed production within a year are unclear. We investigated the effects of variable acorn prod ...
DOI:
10.1007/s00442-016-3557-x

19. Effect of simulated rainfall on the effectiveness of insecticides against spotted wing drosophila in blueberries

Author:
Gautam, Bal K.; Little, Brian A.; Taylor, Milton D.; Jacobs, James L.; Lovett, William E.; Holland, Renee M.; Sial, Ashfaq A.
Source:
Crop protection 2016 v.81 pp. 122-128
ISSN:
0261-2194
Subject:
harvesting,   etc   ; Drosophila suzukii; adjuvants; bioassays; blueberries; chemical treatment; fruiting; fruits; irrigation systems; malathion; mortality; rain; rainfall simulation; ripening; spinosad; sprayers;     Show all 16 Subjects
Abstract:
... The current spotted wing drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae) management strategy relies on routine application of insecticides during the fruit ripening and harvesting period. The amount and frequency of insecticide spray needed to maintain continuous protection of fruits may depend on a variety of factors including the level of rainfall. Studies were conducted to det ...
DOI:
10.1016/j.cropro.2015.12.017
Chorus Open Access:
10.1016/j.cropro.2015.12.017

20. Simulation of vibration harvesting mechanism for sea buckthorn

Author:
Fu, Longsheng; Peng, Jun; Nan, Qiang; He, Dongjian; Yang, Yougang; Cui, Yongjie
Source:
Engineering in agriculture, environment and food 2016 v.9 no.1 pp. 101-108
ISSN:
1881-8366
Subject:
harvesting,   etc   ; Hippophae rhamnoides; branches; crops; economic valuation; finite element analysis; fruits; harvesters; simulation models; trees; vibration; China;     Show all 12 Subjects
Abstract:
... Sea buckthorn (SBT) is an ideal plant for ecological management and thus planted widely in western China. Its fruit is of high nutritional and medicinal values. However, its economic value is far from development because of high cost for harvesting SBT fruits. Mechanical vibration is one of feasible way to make fruit separation. To design proper vibratory harvesters for tree crops, the vibration h ...
DOI:
10.1016/j.eaef.2015.08.003