harvesting time of kiwifruit can influence quality characteristics. the current research was carried out according to a completely randomized design with three replications at faculty of agricultural sciences, university of guilan in 2009. weight loss, flesh firmness, total soluble solid (tss), titritable acidity (ta), ascorbic acid, total phenol content and antioxidant capacity of harvested fr...

abstract: olives belong to the family of olea europaea l. is a popular fruit tree. the fruit and the oil extracted from it is consumed worldwide particularly in the mediterranean regions. in this study changes in the fatty acid composition of the oil extracted from olive fruit during the course of maturation is investigated. this work is concerned with the best harvesting point when oleic acid ...

This paper describes a new laser-based computer vision system used for automatic fruit recognition. Most relevant vision studies for fruit harvesting are reviewed. Our system is based on an infrared laser-range finder sensor generating range and reflectance images and it is designed to detect spherical objects in non-structured environments. A special image restoration technique is defined and ...

A method for locating apples was developed to process real-time video image sequences captured with an over-the-row harvester. The concepts of background modeling in RGB color were used, which is a novel approach to the apple segmentation problem. In background modeling, the distributions of background colors are approximated from real data. The algorithm developed for this task, Global Mixture...

in present research the effects of four levels (0, 0.5, 1, 2 mm) of each of salicylic acid and putrescine treatments on the quality improvement of granny smith apple fruit were studied. factorial experiment in randomized complete block with three replications on 16 trees, eighteen years in researcher station of agriculture university of tehran was designed. for this purpose the trees were spray...

shipped long distances and supply was dependent on local production areas. Demand for year-round, inexpensive produce has led to consolidation of production where temperatures are warm, sunshine is plentiful, and labor is cheap. In most cases, produce is now shipped long distances before being consumed. Tomatoes grown in Mexico are trucked 3,500 miles, bananas grown in Ecuador travel 6,000 mile...

Abstract In this study, we present a recognition method for fruit-harvesting robot to automate the harvesting of pears and apples on joint V-shaped trellis. It is necessary recognize three-dimensional position target by insert its end-effector. However, RGB-D (red, green, blue depth) camera has problem in that point cloud obtained outdoor environments can be inaccurate. Therefore, propose an ef...

A field experiment was conducted to determine effects of concentration and spray volume of metsulfuron-methyl as an abscission aid for mechanical harvesting of citrus. Concentrations of 1, 2, and 4 mg·L metsulfuron-methyl were applied to ‘Hamlin’ orange [Citrus sinensis (L.) Osbeck] trees at 470, 1900, and 4700 L·ha (0.5 to 19 g·ha a.i.). Effective fruit loosening was achieved with all applicat...

A machine vision system for estimating number of citrus fruit drop was developed in this study. The objectives of this study were to design rugged hardware, to develop an image processing algorithm for accurate estimation of fruit count and to conduct field experiments. Image acquisition hardware was developed to be used in a commercial citrus grove specifically for unfavorable imaging conditio...

The transcriptomes of five pear cultivars, 'Hosui' (P. pyrifolia), 'Yali' (P. bretschneideri), 'Kuerlexiangli' (P. sinkiangensis), 'Nanguoli' (P. ussuriensis), and 'Starkrimson' (P. communis) were sequenced at seven key fruit developmental stages, from fruit setting to maturation and fruit senescence after harvesting. In total, 33,136 genes that could be mapped by reads, were analyzed. Most gen...