Faculty Profiles - GOTO Tanjuro

Papers - GOTO Tanjuro

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防蛾用黄色LED光がキクの開花反応に及ぼす影響

石倉聡, 梶原真二, 福島圭吾, 後藤丹十郎

岡山大学農学部学術報告 102 35 - 41 2013

Development of an Insect Pest Control System using Pulsed Light from a Yellow-LED in the Production of Autumn-flowering Chrysanthemums : Investigation of an Appropriate Irradiance Range for the Production of Autumn-flowering Chrysanthemums Reviewed

ISHIKURA Satoshi, GOTO Tanjuro, HIRAMA Junji, YAMASHITA Shinichi, NOMURA Masashi, YOON Jungbeom

Shokubutsu Kojo Gakkaishi 24 ( 4 ) 244 - 251 2012.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

In order to develop an insect pest control device using pulsed light from a yellow LED, the dependency of the production of autumn-flowering chrysanthemums on the irradiance was investigated. The Electro-Retino Gram (ERG) signals of the compound eyes of Helicoverpa armigera and Spodoptera litura due to irradiation with pulsed yellow light with 20 ms pulse width and 100 ms period were determined over the irradiance range from 1 to1000 mW m^-2. The ERG signals showed that these 2 types of noctuid moth continuously and reproducibly recognized pulsed illumination within the irradiance range from 1 to 100 mW m^-2. Therefore, the effects of the irradiance of pulsed light from a yellow LED (0，20，35 and 50 mW m^-2) on flowering and the cut flower characteristics of the autumn-flowering chrysanthemum, 'Zimba', were determined. No significant differences were found in the number of days to flower budding or flowering, or the cut flower characteristics below35 mW m^-2. However, the number of days to flowering and the cut flower length of plants exposed to 50 mW m^-2 irradiance increased significantly compared to those exposed at other irradiances. Thus, no delay in flowering occurred below 35 mW m^-2 irradiance and the maximum irradiance for which no delay occurred is between 35 and 50 mW m^-2.

DOI： 10.2525/shita.24.244

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Other Link： http://agriknowledge.affrc.go.jp/RN/2010850090

Flower Induction in June-bearing Strawberry by Intermittent Low Temperature Storage Reviewed

Yuichi Yoshida, Eiji Ozaki, Kenji Murakami, Tanjuro Goto

JOURNAL OF THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE 81 ( 4 ) 343 - 349 2012.10

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC HORTICULTURAL SCI

In this paper, we describe a new artificial flower-inducing treatment, intermittent low temperature storage, which we suggest could be a low-cost and useful technology for the forcing of June-bearing strawberries. Tray-grown 'Nyoho' plants were placed in a refrigerator (13 degrees C, in the dark) for 4 days and then transferred to an outdoor shelter with 50% shading, also for 4 days (4D/4D). Plants were transferred at noon and this 4D/4D cycle was repeated twice. Similarly, 3D/3D and 2D/2D cycles were applied 3 and 4 times, respectively. The outdoor conditions during the period of treatment from late August to mid-September were as follows: mean daily temperature, 22.5 to 29 degrees C; and day length (sunrise to sunset) 12.2 to 13.1 h. The efficient use of a refrigerator could be achieved by alternately subjecting two groups of plants to the same duration of low temperature in the dark and outdoor conditions. Treated plants were grown on peat bags and flowering performance was compared with untreated controls and continuously cold-stored (12D) plants. In intermittently cold-stored plants, flowering was significantly earlier than that in untreated controls by 6 to 10 days. Compared to the continuous 12D plants, flowering was 15 and 4 days earlier in 4D/4D plants within the plots planted on September 13 and 17, respectively. The 2 to 4 days under outdoor conditions imposed in the low temperature storage apparently induced uniform flower initiation through the improvement of carbohydrate nutrition in strawberries. Although further studies are required to establish the most effective treatment procedures, intermittent low temperature storage could be a useful new flower-inducing technology for early forcing of June-bearing strawberries.

DOI： 10.2503/jjshs1.81.343

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気温および地温がキク‘精興の誠’の黄斑発生に及ぼす影響

後藤丹十郎, 山口訓史, 藤田紫乃, 四谷亮介

岡山大学農学部学術報告 101 33 - 37 2012

Effects of Fertigation Management Based on Apparent Nitrogen Absorption Concentration on Cut Flower Yield, Characteristic Form and Nitrate Nitrogen Concentration of Soil Solution in Carnation 'Nora' Reviewed

Yamanaka Masahito, Goto Tanjuro, Ogawa Kinoe, Uda Akira, Miyaura Toshifumi, Yamaguchi Kunio

Hort. Res. (Japan) 10 ( 4 ) 475 - 483 2011

Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

To develop simple and versatile fertilizer management in cultivation by fertigation of carnations (Dianthus caryophyllus L.), the effects of fertilizer management by apparent nitrogen absorption concentration on cut flower yields, characteristic form and soil solution concentration were investigated using the cultivar 'Nora'. Cut-flower yield by the four-split (seasonally-split) application method was highest among treatments and that by the twelve-split (monthly-split) application method was higher than that of the fixed application method. The cut flower weight (g)/length (cm) ratio of the fixed application method was smaller than that of the twelve-split application method between 33 and 36 weeks after the beginning of harvest. There were differences in EC and nitrate nitrogen concentration between the different methods of treatment. The nitrate nitrogen concentration of soil solution in each treatment ranged from 8 to 169 ppm, from 54 to 103 ppm, and 21 to 108 ppm for the four-split, twelve-split and fixed application methods, respectively, 20 weeks after the beginning of harvest. Fluctuation in the fixed application method was the greatest among the treatments, fluctuation in the four-split application method was least among the treatments examined, and the nitrate nitrogen concentration of soil solution was maintained at an optimal concentration level for the growth of carnations throughout the cultivation period.<br>

DOI： 10.2503/hrj.10.475

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Characteristics of Water Consumption in Winter-Spring Harvest Cropping Type of Carnation Reviewed

Yamanaka Masahito, Goto Tanjuro, Uda Akira, Iwai Toyomichi, Higashiura Masaru

Hort. Res. (Japan) 10 ( 1 ) 33 - 40 2011

Authorship：Last author Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

We investigated the effects of flower bearing types and pinching methods on the characteristics of water consumption in winter-spring harvest cropping type of carnation (Dianthus caryophyllus L.) in order to develop liquid fertilizer management of cultivation by fertigation. The standard type 'Nora' and spray type 'Barbara' were cultivated by bottom fertigation with single pinching or double pinching. The amount of daily water consumption changed with cultivation time, the amount of daily water consumption was lowest in summer for the early cultivation time and greatest in spring for the later cultivation time. The total amount of water consumption for 'Nora' grown by single pinching was 32.29 L (per plant), that of 'Nora' grown by double pinching was 35.26 L, that of 'Barbara' grown by single pinching was 29.75 L and that of 'Barbara' grown by double pinching was 30.29 L. There was a positive correlation between the amount of water consumption over 4 weeks and the number of leaves during those 4 weeks. There was a positive correlation between the amount of daily water consumption and the daily integrated solar radiation 4 weeks after planting. The amount of water consumption (y: L·plant⁻¹·4 weeks⁻¹) could be estimated by a regression line between the integrated solar radiation (X₁: MJ·m⁻²·4 weeks⁻¹) and the leaf number at that time (X₂: per plant) as follows; y = 0.00697X₁ + 0.00930X₂ − 1.36616, regardless of cultivar or pinching methods. Moreover, the amount of water consumption could be estimated by solar radiation alone starting 12 weeks after planting.<br>

DOI： 10.2503/hrj.10.33

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Effects of polyethylene pot removal and irrigation method on growth and flowering of garden-type cyclamen Reviewed

Goto, T, Shimizu N, Koma Y, Morishita T, Fujii K, Nakano Y, Shima K

Acta Horticulture 886 83 - 90 2011

種子のロットおよび採種時期がブプレウルムの生育、開花および切り花形質に及ぼす影響

後藤丹十郎, 石井真由美, 藤原一毅

岡山大学農学部学術報告 100 25 - 29 2011

スプレーカーネーションの灌水同時施肥栽培における栽植方式が収量および切り花品質に及ぼす影響

山中正仁, 後藤丹十郎, 東浦優

岡山大学農学部学術報告 100 31 - 37 2011

1A1-B05 Mobile eggplant grading robot : Discriminating experiment of plants by using IC tags

YAMAMOTO Chikafumi, MONTA Mitsuji, NAMBA Kazuhiko, GOTO Tanjuro

The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2010 _1A1 - B05_1-_1A1-B05_3 2010

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

In the progress of precision farming, it is very important to collect variety of information on crops and field. In this study, we developed a prototype mobile eggplant grading robot in order to get information that be used for presentation of better way on cultivation. This robot can collect and accumulate the fruit's features information and location information at the same time while harvesting. After the field test experiment, a prototype mobile eggplant grading robot has achieved its purpose which was acquiring and storing information in real time and has created field spatial maps from the information. In the previous experiments, a rotary encoder was used in order to discriminate plant location based on the distance from the start point of the robot. However, the detecting error of the distance increased in proportion to the travelling distance of the robot because of the slip of the rotary encoder. In this paper, the robot discriminated plants by using IC tags attached to individual plants and a transmitter-receiver mounted on the robot. From the results, the robot could discriminate individual plants correctly.

DOI： 10.1299/jsmermd.2010._1A1-B05_1

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給液濃度がかん水同時施肥法で栽培したスプレーカーネーションの切り花収量と品質および時期別養分吸収特性に及ぼす影響

山中正仁, 後藤丹十郎, 小河甲, 宇田明, 岩井豊通

岡山大学農学部学術報告 99 55 - 62 2010

Effect of Dissolved Oxygen Concentration in Irrigation Water on the Growth and Postproduction Quality of Potted Cyclamen Using the Ebb & Flow System Reviewed

MAEDA Shigeichi, NAKA Terufumi, SUMIKAWA Yuka, GOTO Tanjuro

Shokubutsu Kojo Gakkaishi 21 ( 4 ) 169 - 174 2009.12

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

We investigated the effects of the dissolved oxygen (DO) concentration in irrigation water on the growth and postproduction quality of potted cyclamen (Cyclamen persicum Mill.), grown using a recirculating Ebb & Flow subirrigation system (Ebb & Flow system). Four levels of DO were set: 4∼6 ppm (control, no air supply), 7∼9 ppm, 15∼18 ppm, and 30∼35 ppm, using an air compressor and two types of oxygen generator. The increase in the DO concentration of irrigation water caused a rise in the pH, but no alkalization of substrates or physiological damage of potted cyclamen was observed during cultivation. The results indicated that growth suppression during a high-temperature period was avoided by treatment with over 15 ppm DO; therefore, the growth and start of flowering of cyclamen were accelerated during the total cultivation period. Moreover, the results showed that the postproduction quality of cyclamen under floral display conditions at a low-light intensity was degraded easily over 15 ppm DO, but it was maintained for longer with 7∼9 ppm DO. From the above results, when the DO concentration in irrigation water was fixed until shipment, we considered that treatment with 7∼9 ppm DO, which facilitated a higher postproduction quality, was more desirable for potted cyclamen production with the Ebb & Flow system.

DOI： 10.2525/shita.21.169

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Other Link： http://agriknowledge.affrc.go.jp/RN/2010782414

Effects of increased water evaporation from the medium on medium temperature and the growth of pansy and cyclamen during high temperature period Reviewed

Nakano Y, Maeda S, Goto T, Higashide T, Kinoshita T, Yoshikawa H

Hort. Res. 8 ( 4 ) 475 - 481 2009.10

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

To improve the growth and development of pansy (Viola × wittrockiana Gams) and cyclamen (Cyclamen persicum Mill.) nursery plants in summer, we investigated the effects of increased water evaporation from medium on medium temperature and plant growth. Medium temperature declined when the polyethylene pot was removed using the soil cast with heat-adhesive polyester fiber. Air blowing on the surface of the medium promoted a cooling effect. Although either removing the pot or blowing air was likely to enhance the growth and development of these plants, simultaneous application of both treatments was more effective during high temperature periods. In pansy plants, these treatments lowered the leaf temperature and plant death rate, and increased the shoot dry matter. The number of leaves and floral buds, and shoot dry matter of cyclamen plants cultivated with these treatments were larger than those of non-treated plants.<br>

DOI： 10.2503/hrj.8.475

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Effect of Types of Media Hardened by the Heat Fusion of Polyester Fibers on Yield of Cut Flower Stems and the Characteristic Form of Rose, and on the Fluctuation of Nutrient Solutions in Closed Hydroponic Culture Reviewed

Kajihara Shinji, Nobuyasu Hiroyuki, Katsutani Noritoshi, Goto Tanjuro

Hort. Res. (Japan) 8 ( 1 ) 61 - 66 2009

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

The effects of using media hardened by heat fusion of polyester fibers on yields and quality of cut flower stems 'Asami·Red' (syn. 'Rote Rose') rose and on the composition of nutrient solutions for a year under closed hydroponic culture were investigated. The yields of cut flower stems grown in vermiculite medium (grain diameter: 6–7 mm) and coconut coir medium (fiber length: 3 mm) were remarkably higher than those grown in rockwool and perlite medium (grain diameter: 0.6–1.5 mm or 2.5 mm). The weight of a cut flower stem did not differ among the media, however stem lengths from both grain perlite media were shorter than those from other media. Eighteen months after transplanting, the length and width of each medium were the same as those just after planting, and the thickness in rockwool and coconut coir media decreased slightly. The solidity of each medium remained almost the same at the termination of the project. The pH of the nutrient solution in the rockwool medium changed the most, becoming higher than that of the other media for most of the time. The EC in coconut coir medium tended to be high throughout the project. The concentration of NH₄-N decreased, while other inorganic components increased gradually. In conclusion, the vermiculite or coconut coir media hardened by heat fusion of polyester fibers is the most favorable of alternative media tested in comparisons with rockwool medium under closed hydroponic culture.<br>

DOI： 10.2503/hrj.8.61

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Partitioning of Photosynthate Originating from Bent Shoots in the Arching and High-rack Culture Systems of Rose Production Reviewed

Shinji, Kajihara, Junki Itou, Noritoshi Katsutani, Tanjuro Goto, Hideo Shimaji

Scientia Horticulturae 121 485 - 489 2009

頭上灌水と底面灌水の組み合わせが熱融着性ポリエステル繊維固化ポットレス培地で育てた花壇苗の生育に及ぼす影響

大橋佑司, 後藤丹十郎, 清水希, 小間康史, 森下照久, 藤井一徳, 島浩二

98 17 - 22 2009

熱融着性ポリエステル繊維で固化した屋上基盤における一年生草本の施肥管理技術 Reviewed

末留昇, 長澤淳一, 豊原憲子, 藤井一徳, 後藤丹十郎, 島浩二

近畿中国四国農業研究 14 14 - 19 2009

塩化ナトリウムを添加した液肥処理がパンジーの生育に及ぼす影響

島浩二, 前田茂一, 後藤丹十郎

和歌山農林水産総合技術センター研究報告 10 1 - 6 2009

Characteristic of the bedding flower seedlings that raised in media hardened by heat fusion polyester fiber and investigation of a simple wall greening method by use these seedlings(PAPERS AND REPORTS OF THE 39TH SCIENTIFIC RESEARCH MEETING) Reviewed

TOYOHARA Noriko, YOSHIKAWA Hiroyasu, SUETOME Noboru, GOTO Tanjyuro, NAMURA Sukeyasu, SHIMA Koji

Journal of the Japanese Society of Revegetation Technology 34 ( 1 ) 103 - 108 2008.8

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japanese Society of Revegetation Technology

A new media hardened by heat fusion polyester fiber has a characteristic that stanch the flow of media materials by watering. By raising bedding flower seedlings in the media, these materials were bound strongly with the growth of the plant, and penetration resistance of the media grew stronger. Pretreatment of slow release fertilizer for the media, it could keep flowering on the seedlings by only watering. 9cm diameter size media just fitted on 5.5cm pitch net-fence. This media was able to make wall greening quickly without using new base or soil. In summer high temperature, to keep the media wet condition and to send wind for them, the temperature of media were cold down and the ambient temperature of greening face was also cold down.

DOI： 10.7211/jjsrt.34.103

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キク‘精興の誠’の黄斑発生を助長する温度条件 Reviewed

7 ( 2 ) 235 - 240 2008

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