EFFECT OF IRRIGATION INTERVALS AND BIOFERTILIZATION ON GROWTH, YIELD, OIL PRODUCTION AND CHEMICAL CONSTITUENTS OF ROSEMARY ( Rosmarinus officinalis,L.) PLANTS. | ||||
| Journal of Productivity and Development | ||||
| Article 20, Volume 12, Issue 2, July 2007, Page 645-665 PDF (342.87 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpd.2007.45048 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ahmed El-Leithy* 1; Mohamed Salem1; El Sayed El-Ghadban2; Nabil Abd El- Ghani2 | ||||
| 1Ornamental Hort. Department, Fac. Agric., Cairo Univ., Egypt. | ||||
| 2Med. and Arom. Plant Research Dept., Hort. Research Instit., Agric. Research Center, Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| This investigation was carried out aiming to study the effect of irrigation intervals ( every 7 , 11 and 15 days) and Biofertilization ( nitrobien and phosphorein each at 0 , 3 and 6 g /pot) on growth, yield, oil production and chemical composition of rosemary (Rosmarinus officinalis, L.), during two successive seasons of 2004 and 2005. The results showed that irrigation every 7 days gave the tallest plant, the highest oil percentage and oil yield/ plant in the first cut of both two seasons, the highest number of branches/ plant, fresh and dry weights/plant, total carbohydrates , N, P and K percentage in the first and second cut of both seasons and gave the highest linalool and P-cymene percentages in the essential oil. Whereas irrigation every 11 days gave the tallest plant, the highest oil percentage and oil yield/ plant in the second cut of both seasons and the highest α-pinene, β-pinene, limonene, 1,8 cineol and camphor percentages compared to irrigation every 15 days which gave the lowest values. Nitrobien and phosphorein at 3 and 6 gm/ pot significantly increased plant height, number of branches/ plant, fresh and dry weights/ plant and oil yield/ plant, and increased the main constituents of the essential oil (γ- Terpenene, 1,8 cineol, linalool , camphor, P-cymene, bornyl acetate and β caryophyllene percentages ), total carbohydrates, N, P and K contents in the first and second cut of both two seasons compared to unfertilized control. Interaction between irrigation intervals and bio-fertilization had a significant effect on vegetative growth characteristics and oil percentage and oil yield. Irrigation every 7 days and phosphorein at 6 g /pot gave the highest values of plant height ( in the first cut), number of branches /plant ( second cut), fresh and dry weights /plant ( in the first cut, oil yield /plant ( in the first cut), total carbohydrates, N and P contents in the first and second cut of both seasons. Whereas irrigation every 11 days and phosphorein application at 6 g /pot gave the highest dry weight/ plant, oil percentage and oil yield/ plant in the second cut of both two seasons. irrigation every 11 days and nitrobien application at 3 g /pot gave the highest β-pinene, 1,8 cineol, camphor and bornyl acetate percentages in the essential oil. Whereas irrigation every 11 646 EL-LEITHY ET AL days and phosphorein at 3 gm/pot gave the highest linalool and P- cymene percentages in the essential oil. | ||||
| Keywords | ||||
| Irrigation intervals; biofertilization; Growth; yield; oil production; chemical constituents; rosemary (rosmarinus officinalis; l.) plants | ||||
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