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Copyright of Ege Üniversitesi Ziraat Fakültesi Dergisi is the property of Ege Universitesi, Ziraat Fakultesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ege Üniversitesi Ziraat Fakültesi Dergisi is the property of Ege Universitesi, Ziraat Fakultesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This thesis was conducted in Gaziantep in 2018 to investigate the effects of pre-harvest ethephon hormone treatments with ripening effects on plants on harvest mechanization of different pistachio (Pistacia vera L.) varieties. Pistachio tree of Uzun and Siirt pistachio varieties (at the age of 40) were used in experiments. Four different ethephon doses (0, 1 000, 3 000, 5 000 ppm) were applied 15 days ahead of two different harvest periods (light, dark). Harvest was performed with a shoulder-type hooked branch shaker. Manual harvest was also performed to make economic analysis. Phenological observation, cluster abscission rate, fruit breaking resistance, endocarp removal force from the seed, flower bud abscission and leaf abscission rates were determined. Also for fruits, split ratios, split space, endocarp colouring, seed colour, endocarp separation, endocarp splitting, 100 endocarped fruit weight, 100 seed weight, 100 red seed coated weight, 100 dry roasted seed weight and 100 seed weight and seed yield were determined. Manual and machine harvests were compared. Applied hormone doses had positive effects on cluster breaking force from the branch and endocarp removal force from the seed, but did not have any significant effects on leaf abscission. The greatest cluster breaking force at both harvest periods was observed in 5 000 ppm treatments of Uzun variety and in 3 000 ppm treatments in light harvest period and 5 000 ppm treatments in dark harvest period of Siirt cultivar. The doses were also prominent for fruit breaking from the clusters. Machine harvest yielded quite fast outcomes as compared to manual harvest. [ABSTRACT FROM AUTHOR]

The study was carried out to determine effect of harvest methods on fiber quality in cotton grown in Efeler, Kocarlı, Incirliova, Soke, Germencik and Nazilli districts of Aydın province, Turkey. The experiment was arranged as randomized complete plots design with two factors. In this study Gloria was used as research material. The effect of locations on ginning percentage, fiber fineness, fiber strength, fiber length and fiber brightness were found to be significant. The ginning percentage, fiber fineness, fiber maturity, fiber strength, color reflectance, yellowness rate of fiber and trash count in fiber were influenced significantly by harvest methods. A significant locationXharvest methods interactions were determined for ginning percentage, fiber fineness, maturity degree of fiber, fiber length and fiber strength measurements. Besides, the lowest fiber color was found in the harvest machine at all locations. The result showed that hand harvest was more appropriate than machine harvest method especially for ginning percentage, maturity degree of fiber, fiber strength, fiber brightness, trash count in fiber and fiber color. On the other hand, machine harvest time was found to be appropriate in terms of yellowness rate of fiber and fiber fineness. [ABSTRACT FROM AUTHOR]

Robotic harvesting systems consist of three important parts. These are; robotic arm, image processing and gripper. Within robotic harvesting systems, consisting of three parts, gripper, which ensures the last motion is the most important part, ensuring plucking the fruit from tree branch.In this study, the determination of location of fruit on the branch was done through the use of image processing, the most significant input for the robotic system and fruit harvesting, and the shearing process was applied. In processing the images in two-dimensional form, the fruit images transferred into the digital media were processed with the help of the camera program by grounding on the shape features of the fruit. The processed data were transferred into the robotic system by means of a robotic control card. The movement of the robotic system was provided according to the x and y coordinate values coming through the image processing.Pneumatic scissors system, design of which has been completed, has been mounted on the end of robotic arm. Tries have been carried out on 100 kiwis, which are on different positions. As the result of these tests, it was observed that the stem thickness of the fruit and stem ultimate strength were effective in harvesting the fruit.Cutting performance has been analyzed systematically. It has been observed that system could achieve the cutting of the fruit from tree branch, with a success rate of 72%. The reasons of 28% failure rate have been studied. According to study results, the fact that fruit rib is in the end of scissors, that scissors hold head of fruit, instead of fruit rib and that scissors hold beginning point of fruit and fruit rib and snag within rib cause failure for plucking process. According to the results obtained from the tries it has been observed that, pneumatic scissors system is appropriate. [ABSTRACT FROM AUTHOR]

In this research, Nazilli 84 S, Beyaz Altin 119 and Carmen variety of cotton (Gossypium hirsutum L.) from Aegean Area were analyzed for some physical properties and relation of between rupture force and rupture energy under co. Cotton balls were pulled between two parallel hugs to determine the deformation, rupture force, and rupture energy. The tests were carried out at three deformation rates of 2.0, 4.0, 6.0 mms-1, naturally harvest moisture and X axis. The average carpel openness, carpel depth, unit mass and terminal velocity, deformation, rupture force, and rupture energy of locks were investigated experimentally. Rupture force, rupture energy, and deformation of the cotton increased in magnitude with an increase in deformation rate. The highest deformation, rupture force and rupture energy among the tree varieties were obtained for Carmen at a deformation rate of 6.0 mms-1. [ABSTRACT FROM AUTHOR]