ISHS Acta Horticulturae 73: I International Symposium on Spices and Medicinal plants
EFFECT OF NITROGEN FERTILIZATION ON GROWTH, YIELD AND ALKALOID CONTENT IN DATURA INNOXIA MILL. |
| Authors: | A. Ruminska, El.S. El Gamal |
| Abstract:
Pot experiments were carried out to study the effects of levels, forms as well as time of adding nitrogen fertilizers on growth, yield and alkaloid content in Datura innoxia Mill. during 1975 and 1976 seasons. The results indicate that the growth of Datura innoxia increased with increasing the amount of nitrogen fertilization from 150 mg N/1 to 450 mg N/1 and then decreased at higher doses such as 600 mg N/1 of soil, whereas the nitrogen concentration in plant organs increased with increasing the nitrogen levels from 150 to 600 mg N/1. Also the growth of Datura innoxia was higher when plants received NH4 or urea than when they received NO3. The total nitrogen concentration in the different plant organs was higher when plants received NH4 than when they received two other forms. Application of all nitrogen fertilizer in one dose at the time of sowing brought better results in connection with growth of Datura innoxia than the two other times of application under study. There was no remarkable influence of levels, forms, and time of adding nitrogen fertilizer on the total alkaloid content. Also there was no relationship between the percentage of total N in plant organs and the percentage of alkaloid concentration. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
