Faculty Profiles - GOTO Tanjuro

Effects of Water and Nutrient Stresses on Reduction of Vegetative Growth in Chrysanthemum Grown under Restricted Root Zone Volume

Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10470034

Goto Tanjuro, Takaya Noriyuki, Yoshioka Naoko, Yoshida Yuichi, Kageyama Yoshihiro, Konishi Kuniyoshi

Journal of the Japanese Society for Horticultural Science 70 ( 6 ) 760 - 766 2001

Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

DOI： 10.2503/jjshs.70.760

Studies on transplants production of Dianthus caryophyllus L, and Gypsophilla paniculata L, Using Cell tray-Effets of cell volume and transplanting age on growth and cut flower quality-

Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10470034

Anthocyanin accumulation in strawberry fruits as affected by mineral nutrition

YOSHIDA Y., GOTO T., HIRAI M.

69 ( 2 ) 345 - 345 2000.9

Effects of nitrogen form on the growth and nutrient uptake of stock transplants using cell tray

GOTO T., MATSUNO T., YOSHIDA Y., KAGEYAMA Y.

69 ( 1 ) 358 - 358 2000.3

Goto Tanjuro, Kageyama Yoshihiro, Konishi Kuniyoshi

Journal of Japan. Soc, Hort. Sci 69 ( 6 ) 749 - 757 2000

Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

Experiments were conducted to evaluate the effects of cell (root zone) volume during rooting and transplanting age in two cut flower species. Cuttings of carnation, Dianthus caryophyllus L. 'Nora' and Gypsophila paniculata L. 'Bristol Fairy', were grown in trays, comprised of 406 and 128 cells pre-filled with 6 and 20 ml potting medium/cell, respectively. 'Nora' cuttings were transplanted when 20 to 50 days old at 10-days intervals, whereas 'Bristol Fairy' cuttings were transplanted when 22 to 52 days old. 'Nora' was less affected of cell volume in respect of rootball formation, i.e., 30-day old transplants with 6 and 20 ml volume capacities, the rootballs occupied 13.5 and 6.3% of the cell, respectively ; whereas in 40-day old transplants, the rootballs occupied 93.8% of the cell. Contrarily, 'Bristol Fairy' was profoundly affected that 52-day old transplants with 6 ml and 12 ml volume capacities occupied 100 and 85% of the cell, respectively. Older plants with rootballs were easier to transplant than the younger ones. However, the older ones grew slower after transplanting than the younger ones. Younger transplants had more succulent roots per plant than the older ones. The number of days from pinching to cut flower harvest in 'Nora' increased with delayed transplanting. The older transplants had longer stems, heavier flowers, and more nodes per plant than younger ones. Flower quality varied less among plants raised from the different cell volumes. Older transplants of 'Bristol Fairy' not only had longer harvesting periods, but they also had weaker shoot growth following pinching which resulted in low flower production. Younger transplants had fewer nodes per stem. Cuttings grown from 6 ml cell volume capacities required fewer days from pinching to flower harvest than those grown in 20 ml ones. Our study indicates that transplanting 'Nora' cuttings is optimal if done before rootballs are formed for production in trays. Transplants with full rootballs are sufficiently suitable in commercial production for 'Nora', whereas transplanting of 'Bristol Fairy' cuttings should be done before rootball formation occurs on account of their slow growth rate.

DOI： 10.2503/jjshs.69.749

Studies on Transplant Production of Dianthus caryophyllus L. and Gypsophila paniculata L. Using Different Size Cell Trays : Effects of Cell (Root Zone) Volume and Transplanting Age on Subsequent Growth and Cut Flower Quality

Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469820

Goto Tanjuro, Kageyama Yoshihiro, Konishi Kuniyoshi

Journal of the Japanese Society for Horticultural Science 69 ( 6 ) 749 - 757 2000

Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

DOI： 10.2503/jjshs.69.749

Effects of Nutrient Solution Volume on Mineral Uptake and Cut Flower Quality in Spray Chrysanthemum in NFT System

Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469820

YOON Hae suk, GOTO Tanjuro, KAGEYAMA Yoshihiro

Environment control in biology 38 ( 3 ) 121 - 127 2000

Mineral Uptake as influenced by growing seasons and developmental stages in spray chrysanthemums grown under a hydroponic system

Yoon Hae Suk, Goto Tanjuro, Kageyama Yoshihiro

Journal of Japan Soc. Hort. Sci 69 ( 3 ) 255 - 260 2000

Language：English Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

Characteristics of mineral uptake in spray chrysanthemums grown under a hydroponic system were investigated in relation to growing seasons and developmental stages. The amounts of N, P, K, Ca, and Mg, taken up per plant, differed markedly over the growing seasons and between 'Sei Aloha' and 'Talk'. However, the ratios of P, K, Ca, and Mg to N uptake were similar over both the growing seasons and cultivars. The ratios obtained from the nutrient solution analyses were P/N 13.3±0.4%, K/N 102.6±3.4%, Ca/N 29.6±0.7% and Mg/N 10.0±0.4%. The ratios corresponded to those estimated via plant tissue analyses. Uptake of 4.3-5.2mg N fertilizer led to an increase of 1g in fresh weight. The rate of N uptake steadily rose after planting until flower buds became visible. The upward trend continued during bud development but decreased rapidly towards harvest. The ratios of P/N and K/N decreased from 16.2% and 134.2% to 8.4% and 69.5%, respectively, from the vegetative growth to the flowering stages. The ratios of Ca/N and Mg/N varied slightly.

DOI： 10.2503/jjshs.69.255

Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469710

Developing a nitrogen Application curve for spray chrysanthemums grown in hydrop'onic system and its practical use in NFT system.

Hae Suk Yoon, Tanjuro Goto, Yoshihiro Kageyama

Journal of Japan. Soc. Hort. Sci 69 ( 4 ) 416 - 422 2000

Effects of root zone volume on the growth of snapdragon seedlings under optimum nutrient and water supply

T Goto, T Sagawa, Y Kageyama, K Konishi

PROCEEDINGS OF THE XXV INTERNATIONAL HORTICULTURAL CONGRESS, PT 1 511 ( 511 ) 233 - 238 2000

Language：English Publisher：INTERNATIONAL SOCIETY HORTICULTURAL SCIENCE

The effects of root zone volume on the growth of snapdragon under optimum nutrient and water supply in soil culture or continuous flowing hydroponic system (CFHS) were investigated for seven weeks. In soil culture, seeds were sown in 30, 100, 300, and 1000 ml containers and fertigated with a 3/8 strength Enshi-shoho nutrient solution at 6-10 kPa (pF1.7-2.0) of soil moisture tension. In CFHS, plants were set on one reservoir and the volume of each plant was limited to 10, 30, 100, 300, and 1000 ml using cylindrical containers. A 1/8 strength Enshi-shoho nutrient solution flowed continuously at 170 ml / minute into the containers of CFHS for each plant.
In soil culture, shoot dry weight at harvest significantly increased with increasing root zone volume. Led area and stem length of plants grown in 30 ml containers were smaller than that of others at three weeks after sowing. In CFHS, shoot dry weights of plants grown in 10 and 30 ml containers at harvest were lower than those of others in large containers grown on CFHS. Stem length, node number and leaf area were unaffected by root zone volume. In soil culture, reduced shoot growth was observed at a very young stage when the roots made contact with the container walls, but not on CFHS. These results indicate that the difference in growth of plants in soil culture was caused mainly by some substances retarding growth, probably originating from the roots rather than nutrient or water supply.

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