| Автор | Hara, Tetsuo |
| Автор | Sonoda, Yoji |
| Дата выпуска | 1979 |
| dc.description | AbstractA water culture experiment was conducted to interpret how three major nutrients (N, P, K) contribute to cabbage-head fonnation when they are supplied in a different amount and at different growth stages.The critical N, P, and K contents in the outer leaves which resulted in a 50% decrease in the cabbage-head yield due to each deficiency were 1.3, 0.1. and 0.3% on a dry basis, respectively. The longer the period of each nutrient supply, the higher was the cabbage-head yield. The contribution of nitrogen per unit weight to cabbage-head fonnation was the highest at the third growth stage (i.e. early cabbage-head development phase) and that of phosphorus and potassium at the first growth stage (i.e. outer-leaf expansion phase) among the four growth stages.The nitrogen supplied for 20 days at any growth stage of the four growth stages did not produce an ordinary cabbage-bead but the phosphorus at the second growth stage (i.e. outerleaf development phase) produced a big cabbage-head comparable to that of the plants receiving phosphorus during the whole growth stage. The potassium supplied at the first or the second growth stage produced a small cabbage-bead but failed to produce any cabbage-head at the later growth stages. |
| Формат | application.pdf |
| Издатель | Taylor & Francis Group |
| Копирайт | Copyright Taylor and Francis Group, LLC |
| Тема | cabbage-head formation |
| Тема | N-P-K nutrition |
| Название | The role of macronutrients for cabbage-head formation |
| Тип | research-article |
| DOI | 10.1080/00380768.1979.10433151 |
| Electronic ISSN | 1747-0765 |
| Print ISSN | 0038-0768 |
| Журнал | Soil Science and Plant Nutrition |
| Том | 25 |
| Первая страница | 113 |
| Последняя страница | 120 |
| Аффилиация | Hara, Tetsuo; Faculty of Agriculture, Gifu University |
| Аффилиация | Sonoda, Yoji; Faculty of Agriculture, Gifu University |
| Выпуск | 1 |
| Библиографическая ссылка | Hara, T. and Sonoda, Y. (1979). The role of macronutrients for cabbage-head formation. (Preliminary Report) Growth performance of a cabbage plant, and potassium nutrition in the plant. Soil Sci. Plant Nutr., 15: 103–111. |
| Библиографическая ссылка | Tanaka, A. and Hara, T. (1970). Nutria-physiological studies on the photosynthetic rate of the leaf. I. Effect of nitrogen status on the photosynthetic rate in the com plant. J. Sci. Soil Manure. Japan, 41: 502–508. (in Japanese) |
| Библиографическая ссылка | Iwata, M. and Utada, A. (1968). Effects of nitrogen supplied in various growth stages on the growth and yield of several vegetable crops. J. Japan Soc. Hort. Sci., 37: 57–66. (in Japanese, English summary) |
| Библиографическая ссылка | Kato, T. (1965). Fundamental studies on fertilization for lettuce plant. Res. Rep. Kochi Univ. 14, Natural Science II, : 49–60. (in Japanese, English summary) |
| Библиографическая ссылка | Fujimura, T., Mori, T., Kitano, T. and Aoiki, Y. (1960). Studies on fertilization for lettuce. I. Nutrient absorption at different stages of growth and effect of nitrogen and potassium levels and their balance on the growth. J. Japan Soc. Hort. Sci., 29: 191–196. (in Japanese, English summary) |
