研究者詳細 - 後藤　丹十郎

MISC - 後藤　丹十郎

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Ｒelationships between plant size and amount of overhead irrigation required for uniform water supply to individual cell medium

the scientific reports of the faculty of agriculture 92 27 - 30 2003年

培養液中のNaCl濃度がピートバッグ栽培イチゴの生育，収量と品質に及ぼす影響

Yoshida Yuichi, Miyata Hideyuki, Goto Tanjuro

園芸学研究 2 ( 3 ) 171 - 174 2003年

セル培地に必要な散水量と植物体の大きさの関係

後藤丹十郎, 吉田裕一

岡山大学農学部学術報告 92:27-30 ( 1 ) 27 - 30 2003年

記述言語：日本語出版者・発行元：岡山大学農学部

In order to clarify the problems with overhead irrigation systems for cell transplant production, uniformity of water supply by a boom spraying system was investigated. Furthermore, uneven water soaking into individual cell medium caused by plant cover growing in such cells was investigated. The amount of water supply from a boom spraying system varied considerable with the arrangement of the nozzles. Although a larger number of nozzles was set on the boom, the maximum amount of supplied water in the central part of the boom was about twice as much as that at each end of the boom. When no plant was grown in the cells, uniform water supply to individual cell mudium was obtained by a downright sprinkler system. However, when stock (Matthiola incana R. Br.) plants were grown in cells, variation in the amount of water soaking into the medium increased noticeably with increase in the plant size growing in the cells and with a decrease in the amount of supplied water. Plant covers with overlapped leaves may disturb the uniformity in the amount of water soaked into individual cell medium. As twice the water consumption may be required for uniform water supply into individual cell medium with an overhead irrigation system, a subirrigation system may be desirable for economical and ecological automatic irrigation to produce cell transplants on a large scale.セル育苗における灌水方法として用いられている頭上散水法の問題点を明らかにするため，実際の苗生産施設において，ブーム式の頭上散水装置による育苗ベンチ内の散水むらを調べた．また，苗齢（23，42日齢区）の異なるストックセル苗に散水ノズルによって散水（１/２セルトレイあたり０，150，300，450）した場合のセルごとの水分吸収量の変動を調べた．ブーム式の頭上散水装置による散水量は，ノズルからの散水の重なり程度によって大きく異なり，散水量の最大値は最小値の約２倍であった．ブームの中央部においても散水量にばらつきがみられ，最大30%程度異なった．均一な散水を行った場合であっても，セルで植物が生育している場合には，散水量が少ないほどセルあたりの灌水量の変動が大きくなった．また，植物体（葉面積）が大きいほど，変動が大きくなった．以上のことから，頭上散水法ですべてのセルに必要量散水するには，蒸発散量の２倍以上の散水が必要と推定され，セル育苗の灌水自動化にあたっては，灌水の均一化，養水分の利用効率の面から，頭上散水法より底面給水法を採用することが望ましいと考えられた．

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セル培地に必要な散水量と植物体の大きさの関係

岡山大学農学部学術報告 92 ( ,27-31 ) 2003年

Salinity levels affecting growth, yield and quality of strawberry grown in peat bags

Hort. Res 2:171-174 2003年

根域制限と日射比例給液制御を組み合わせた高糖度トマト生産システムの開発 : (第1報)根域容量と給液量が'ハウス桃太郎'の生育・収量・果実品質と養水分吸収に及ぼす影響

吉田裕一, 松野太樹, 後藤丹十郎

園芸学会雑誌. 別冊, 園芸学会大会研究発表 71 ( 2 ) 356 - 356 2002年10月

培養液濃度が春咲きストックの養分吸収と生長に及ぼす影響

下野和彦, 後藤丹十郎, 景山詳弘

園芸学会雑誌. 別冊, 園芸学会大会研究発表 71 ( 2 ) 419 - 419 2002年10月

日射比例制御底面給液法で育苗したストックセル苗に対する適正液肥濃度の季節変化

後藤丹十郎, 今永明美, 笠原真樹, 吉田裕一, 景山詳弘

園芸学会雑誌. 別冊, 園芸学会大会研究発表 71 ( 2 ) 190 - 190 2002年10月

熱融着性ポリエステル繊維で固化した培地によるシュクコンカスミソウセル苗の生育および切り花品質

後藤丹十郎, 笠原真樹, 藤井一徳, 元岡茂治, 小西国義

園芸学会雑誌. 別冊, 園芸学会大会研究発表 71 ( 1 ) 166 - 166 2002年4月

スプレイギクのベンチ栽培における窒素施肥曲線の利用 : (第2報)夏秋ギク型および秋ギク型スプレイギクにおける養水分吸収の比較

島浩二, 後藤丹十郎, 景山詳弘

園芸学会雑誌. 別冊, 園芸学会大会研究発表 71 ( 1 ) 299 - 299 2002年4月

Transplant production of stocr with Aufomatically Xuvirrigated Cell Flat(1) Relationships betweeevapofranspiration and enviroumeafal facfors,especially solan radiation

J.of Society of High Tech ni Agri. 14(2), 81-86 2002年

自動底面灌水によるストックのセル苗生産（第１報）蒸発散量と環境要因、特に日射量との関係について

後藤丹十郎, 山田祐介, 藤本裕也, 吉田裕一, 景山詳弘

植物工場学会誌 14(2), 81-86 ( 2 ) 81 - 86 2002年

記述言語：日本語出版者・発行元：JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS

Changes in the evapotranspiration (ETP) of stock (Matthiola incana R. Br.) cv. White Dorse seedlings in a cell flat were measured, and regression analyses were conducted to investigate the relationships between ETP and environmental factors (solar radiation ; SR, saturation deficit ; SD and air temperature ; AT). In each sowing month, ETP was positively correlated with SR, SD and AT. Coefficients of determination (R²) were higher than 0.81 in SR throughout the year and larger than those in SD or AT in most sowing months. Seasonal variation of R² in the regression lines was also lowest between ETP and SR compared to the other two factors. Thus, ETP was strongly affected by SR in each sowing month. When the yearly data were pooled, the regression line between ETP (y;mg·plant^-1) and SR (x;MJ·M^-2) was expressed as follows ; y = 276.2x+24.1 (R²= 0.873). Although R² of a multiple regression equation became 0.921 when SD and AT were included as explanatory variables, there was little difference between the values of R^-2-. A simple regression line of ETP and SR could estimate ETP. Change in ETP during seedling growth caused by the increase in the total leaf area was only 1.7 fold in comparison to changes in total dry weight and leaf area which were 10 and 7 fold, respectively. ETP at night was considered negligible in the estimation of ETP. When the transplants of stock are grown with an automatic fertigation system for a cell flat (12ml cell volume), supplying every 5 to 6 MJ·m^-2 cumulative solar radiation may be a suitable value for fertigation frequency.

DOI： 10.2525/jshita.14.81

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00157916735?from=CiNii

自動底面灌水によるストックのセル苗生産（第２報）日射批判灌水法および定時灌水法における灌水頻度がセル苗の生長と生産性に及ぼす影響

後藤丹十郎, 藤本裕也, 吉田裕一, 景山詳弘

植物工場学会誌 14(2), 87-91 ( 2 ) 87 - 91 2002年

記述言語：日本語出版者・発行元：JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS

We demonstrated the practical utility of solar radiation mediated fertigation control for transplant production in a cell flat with an automatic ebb-and-flow fertigation system. Furthermore, we investigated seasonal changes in growth and productivity of stock (Matthiola incana R. Br.) cv. White Dorse as affected by fertigation frequency controlled in response to solar radiation (5 or 10 MJ · m^-2) and scheduled time course (once or twice per day). The shoot dry weight of transplants and fresh weight of cut flowers were higher in plants fertigated with every 5 MJ · m^-2 of solar radiation, sown between late April and late July. In plants sown during other periods, there was no significant difference in growtn and productivity among plants fertigated differently. When the plants sown in June were fertigated twice per day, the exposure was 5 MJ · m^-2 in average of cumulatlve solar radiation from fertigation to subseauent fertigation. However, the maximum cumulative value exceeded 8 MJ · m^-2. Water stress caused by the high solar radiation accompanied by high temperature and large saturation deficit may have resulted in reduced growth of the transplants and decreased quality of the cut flowers. When the stock transplants were grown in a cell flat (220 cells of 12ml cell volume), suffcient but not excess fertigation could be obtained by supplying nutrient solution every 5 MJ · m^-2 of solar radiation with an automatic ebb-and-flow fertigation system.

DOI： 10.2525/jshita.14.87

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Transplant production of stocbwith automatically subirrigated cell flat(Part2) growth and Productivity of trausplants as affectedby fentigaton ferguency controlled in respouse fo solar radiation or Scheduled in time course

J.of Society of High,Tech in Agri 14(2), 87-91 2002年

根域制限で栽培したキクの光合成、蒸散特性と葉の形態に及ぼす養水分供給頻度の影響

園芸学会雑誌 71(2), 277-283 2002年

キク '精興の誠' の葉身における黄斑の発生に及ぼす養水分ストレスの影響

後藤丹十郎

園学雑 71 ( 1 ) 320 - 320 2002年

Anthocyanin accumulation in strawberry fruits as affected by nitrogen nutrition

Y Yoshida, T Goto, M Hirai, M Masuda

PROCEEDINGS OF THE FOURTH INTERNATIONAL STRAWBERRY SYMPOSIUM, VOLS 1 AND 2 ( 567 ) 357 - 360 2002年

記述言語：英語出版者・発行元：INTERNATIONAL SOCIETY HORTICULTURAL SCIENCE

Effects of nutrient deficiency (N, P and K) on color development and anthocyanin accumulation in strawberry fruit were determined. In fruits of N deficient `Nyoho' red color began to develop faster, while L* value and hue angle were lower at 24 days after anthesis (DAA) compared to those of control or P and K deficient plants, but there was no significant difference at 27 to 36 DAA. The concentration of total anthocyanins was significantly higher in N deficient fruits than that in control at 24 DAA, but was significantly lower in N deficient fruits compared to that in controls at 33 or 36 DAA. In case of 'Toyonoka', there was no effect of treatment on color development and anthocyanin concentration. In three other cultivars (Tochiotome, Sachinoka and Hokowase), L* value, hue and chroma were significantly higher, and the concentration of total anthocyanins was also lower in N deficient fruits compared to the other treatments. It was concluded that the anthocyanin synthesis. in strawberry fruits may be reduced by N deficiency.

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香川型イチゴピート栽培システム"らくちん"の開発 : (第8報)'女峰'の生育, 収量と品質に及ぼす培養液中NaCl濃度の影響

吉田裕一, 宮田英幸, 後藤丹十郎

園芸学会雑誌. 別冊, 園芸学会大会研究発表 70 ( 2 ) 298 - 298 2001年9月

バラのベンチ栽培における培地の種類と切り花生産量

景山詳弘, 岡崎裕之, 後藤丹十郎

園芸学会雑誌. 別冊, 園芸学会大会研究発表 70 ( 2 ) 201 - 201 2001年9月

熱融着性ポリエステル繊維で固化した培地によるストックおよびキンギョソウのセル苗の生育および切り花品質

後藤丹十郎, 横張大輔, 藤井一徳, 元岡茂治, 小西国義

園芸学会雑誌. 別冊, 園芸学会大会研究発表 70 ( 2 ) 316 - 316 2001年9月

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