Required amounts of medium and fertilizer for potted culture of zucchini


In Japan, zucchini culture has yet to get underway, and the current costs of zucchini can be attributed to damage from soil-borne disease and the unstable yields due to seasonal change of female flowers. Eradication of these problems will lead to stable supply and a consequent price reduction of zucchini fruits. We previously clarified the efficacy of potted culture as a new culture method for zucchini, but potted culture can be burdensome as the weak water and nutrient retention capacity of the medium warrants its regular replacement. To solve this problem, in this study, we investigated the blend ratio for mixing rice husk charcoal with peat and the amount of fertilizer required for potted culture of zucchini. Results revealed no significant differences in the length of the largest leaf, total number of flowers, number of female flowers, and the ratio of female flowers to total flowers with different blend ratios of rice husk charcoal to peat. However, the number of harvested fruits increased with higher ratios of rice husk charcoal to peat and was highest at 80:20. The length of the largest leaf increased with increased amounts of fertilizer, with the best response was at 200 g. No significant differences were noted between the ratio of female flowers to total flowers in any treatments. In addition, the number of harvested fruits was highest with 160 g and 200 g of fertilizer. Taken together, the optimal blend ratio of rice husk charcoal to peat is 80:20, and the optimal amount of fertilizer with this ratio is 160 g.

Share and Cite:

Ikeura, H. , Tokuda, T. and Hayata, Y. (2012) Required amounts of medium and fertilizer for potted culture of zucchini. Agricultural Sciences, 3, 816-821. doi: 10.4236/as.2012.36099.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Powell, C.A., Stoffella, P.J. and Paris, H.S. (1993) Plant population influence on squash yield, sweetpotato whitefly, squash silverleaf, and zucchini yellow mosaic, HortScience, 28, 796-798.
[2] Ikeura, H., Tokuda, T. and Hayata, Y. (2012) Efficacy in Zucchini Potted Culture, Journal of the Japanese Society of Agricultural Technology, 19, 7-11.
[3] Beardsell, D.V., Nichols, D.G. and Jones, D.L. (1979) Physical properties of nursery potting-mixtures. Scientia Horticulturae, 11, 1-8.
[4] Oshio, H., Nii, F. And Namioka, H. (1981) Characteristics of kuntan (rice husk charcoal) asoa mediumof soilless culture. Journal of the Japanese Society for Horticultural Science, 50, 231-238 (In Japanese).
[5] Yoshida, Y., Hanaoka, T. and Hidaka, K. (2002) Effect of Composition of Nutrient Solution on Nutrient and Water Uotake, Growth and Yield of ‘Nyoho’ Strawberry Growth with Peat Based Substrate. Horticultural Research (Japan), 1, 199-204 (In Japanese).
[6] Kato, H., Komori, A. and Miyake, H. (1996) Studies on Nutrient Solution Culture of Roses by Drainage Bed Using Rice Husk Charcoal as Medium, Bulletin of Yamanashi Prefectural Agriculture Research Center, 7, 15-23 (In Japanese).
[7] Sudhagar R. and Sekar K. (2009) Effect of coco peat medium on growth and quality of poinsettia (Euphorbia pulcherrima. Willd.), Asian Journal of Horticulture, 4, 52-56.
[8] Nazari, F., Farahmand, H., Khosh-Khui, M. and Salehi, H. (2011) Effects of coir as a component of potting media on growth, flowering and physiological characteristics of hyacinth (Hyacinthus orientalis L. cv. Sonbole-Irani). International Journal of Agricultural and Food Science, 1, 34-38.
[9] Vaughn, S., Deppe, N.A., Palmquist, D.E. and Berhow, M.A. (2011) Extracted sweet corn tassels as a reneable alternative to peat in greenhouse substrates. Industrial Crops Production, 33, 514-517.
[10] Manios, T. (2004) The composting potential of different organic solid wastes: Experience from the island of Crete. Environment International, 29, 1079-1089.
[11] Bari, Q.H. and Koenig, A. (2001) Effect of air recirculation and reuse on composting of organic solid waste. Resources Conservation and Recycling, 33, 93-111.
[12] Promchot, S. and Boonprakob, U. (2007) Replacing Agar with Vermiculite, Coconut Fiber and Charcoal Rice Husk in Culture Media for Embryo Rescue of Immature Nectarines Seeds, Thai Journal of Agricultural Science, 40, 167-173.
[13] Miao, Y., Horibe, K., Hoki M. and Iwai, S. (1999) Uses of Rice Husk Charcoal for Container Culture. Bulliten Graduate School of Bioresorce Mie University, 23, 31-36 (In Japanese).
[14] Inden, H. and Torres, A. (2004) Comparison of four substrates on the growth and quality of tomatoes. Acta Horoticultureae, 644, 205-215.
[15] Islam, S. (2008) Evaluating performance of ecologically sound organic substrates under different temperature regimes. International Journal of Agriculture and Biology, 10, 297-300.
[16] Endo, M., Kiriiwa, Y. and Nukaya, A. (2006) Effects of Coir and Peat Ratios on Growth, Yield and Water Relations of Strawberries ‘Akihime’ Grown in Soilless Culture, Journal of the Japanese Society for Horticultural Science, 75, 344-349 (In Japanese).
[17] Zaller, J.G. (2007) Vermicompost as a substitute for peat in potting media: Effects on germination, biomass allocation, yields and fruits quality of three tomato varieties.
[18] Wien, H.C., Stapleton, S.C., Maynard, D.N., Mc.Clurg, C. and Riggs, D.I.M. (2004) Flowering, Sex Expression, and Fruiting of Pumpkin (Cucurbita sp.) Cultivars under Various Temperatures in Greenhouse and Distant Field Trials. HortScience, 39, 239-242. Scientia Horticulturaea, 112, 191-199.
[19] Zuraiqi, S. and Battikhi, A.M. (1992) The effect of Frequency of Nitrogen Application on growth yield and quality of tomato grown under plastic-house. Emir Journal of Agricultural Science, 4, 1-13.
[20] Diez, J.A., Roman, R., Caballero, R. and Caballero, A. (1997) Nitrate leaching from soils under a maize-wheat-maize sequence, two irrigation schedules and three types of fertilizers, Agriculture, Ecosystems & Environment, 65, 189-199.
[21] Eghball, B. and Power, J.F. (1999) Composted and noncomposted mature application to conventional and notillage systems: corn yield and nitrogen uptake, Agronomy Journal, 91, 819-825.
[22] Evanylo, G., Sherony, C., Spargo, J., Starner, D., Brosius, M. and Haering, K. (2008) Soil and water environmental effects of fertilizer-, manure-, and compost-based fertility practices in an organic vegetable cropping system. Agriculture, Ecosystems & Environment, 127, 50-58.
[23] Reiners, S. and Riggs, D.I.M. (1997) Plant spacing and variety affect pumpkn yield and fruit size, but supplemental nitrogen does not. HortScience, 32, 1037-1039.
[24] Takemyou, T., Araki, T., Nagatani, H., Tamaki, M. and Hayata, Y. (2002) Study on the Potted culture of Zucchini (Cucurbita pepo L.). Bulletin of Hiroshima Prefectural University, 13, 95-100 (In Japanese).

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.