M. Pouryousef; D. Mazaheri; A.R. Yousefi; A. Rahimi; A. Tavakoli
Abstract
In order to study the effect of fertilizing treatments and limited irrigation regimes on grain qualitative traits and mucilage production of Isabgol (Plantago ovata Forsk.), a field experiment was conducted at Experimental Farm of College of Agronomy and Animal Sciences, University of Tehran. The experimental ...
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In order to study the effect of fertilizing treatments and limited irrigation regimes on grain qualitative traits and mucilage production of Isabgol (Plantago ovata Forsk.), a field experiment was conducted at Experimental Farm of College of Agronomy and Animal Sciences, University of Tehran. The experimental design was a split plot based on a randomized complete block design with three replications. In this research, four irrigation regimes including full irrigation, light limited irrigation, moderate limited irrigation and severe limited irrigation, were assigned to the main plots and five fertilizing treatments including control (without fertilizer), chemical fertilizer, combined use of chemical fertilizer and Barvar Phosphate Biofertilizer, cattle manure and combined use of chemical fertilizer and cattle manure, were assigned to the sub plots. Results showed that irrigation regimes had significant effect (p ≤ 0.05) on all measured traits. Mucilage and grain yields decreased with decrement in irrigation frequency from full to severe limited irrigation but mucilage percentage and grain swelling factor increased; therefore, the highest mucilage and grain yield were obtained in full irrigation regime. The highest mucilage percentage and grain swelling factor were obtained in severe limited irrigation. Results also showed that fertilizing treatments had significant effect (p ≤ 0.05) on all measured traits. The highest mucilage yield (252.58 kg/ha) was obtained in combined use of chemical fertilizer and cattle manure treatment under full irrigation regime. Mucilage percentage and grain swelling factor were significantly higher (p ≤ 0.05) in cattle manure treatment.
S. Davazdahemami; F. Sefidkon; M.R. Jahansooz; D. Mazaheri
Abstract
In order to evaluate the effects of water salinity on ajowan (Carum copticum L.), a completely randomized design was conducted in Esfahan province in 2007. Eight water salinity treatments (0.3-21 dS/m) with 3 replications were applied in the field. The seeds (at ripening) and foliage (initial flowering) ...
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In order to evaluate the effects of water salinity on ajowan (Carum copticum L.), a completely randomized design was conducted in Esfahan province in 2007. Eight water salinity treatments (0.3-21 dS/m) with 3 replications were applied in the field. The seeds (at ripening) and foliage (initial flowering) of ajowan were harvested. After drying the plant materials in shade, their essential oils were obtained by hydro-distillation. The oils were analyzed by capillary gas chromatography, using flame ionization and mass spectrometric detection. According to results seed and foliage oils percentage were 3.5-4.4 and 0.25-0.35 cc/100 g, respectively. Maximum seed and foliage oils yield were 8.3 and 2.4 cc/m2 and minimum were 3.5 and 1.5 cc/m2 in control and in 21 dS/m, respectively. Maximum biological and seed yields were 202.7 and 1367.6 and minimum were 96.7 and 739.5 gr/m2 in control and 21dS/m, respectively. The most important constituents of essential oil were: thymol (55.5% and 56.2%), γ-terpinene (22.5% and 26.9%), ρ-cymene (14.2% and 11.2%), limonene (1.9% and 0.5%) and carvacrol (0.3% and 1.4%), respectively.
S. Davazdahemami1; F. Sefidkon; M.R. Jahansooz; D. Mazaheri
Volume 24, Issue 3 , November 2008, , Pages 263-270
Abstract
In order to compare biological yield, essential oil content, composition and phonological stages of moldavian balm in three planting date seasons, a completely randomized design with three replications was conducted in 2006-2007 in Isfahan province. Biological yield per date and area unit, allocation ...
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In order to compare biological yield, essential oil content, composition and phonological stages of moldavian balm in three planting date seasons, a completely randomized design with three replications was conducted in 2006-2007 in Isfahan province. Biological yield per date and area unit, allocation index, percentage and yield of essential oil, dry matter to fresh matter ratio and essence components and period of sowing to flowering were measured. According to results, the majority of seedlings were injured in autumn planting date (November). Fresh and dry biological yields, essential oil quality per m2 of moldavian balm had significant differences and in spring (March) were 12.7 kg, 10.3cc and 4.1kg and in summer (June) were 4.1, 1 kg and 4.1cc, respectively. Essential oil quantity were significantly higher than summer sowing date (June). 46.7% and 62.2% fresh biological matter changed to dry matter in spring sowing date and summer sowing date, respectively. Sum of five major components (neral, geraniol, geranial, neryl acetate and geranyl acetate) in essence were 92% and 64.4% in spring and summer sowing date and maximum change was seen in geranyl acetate (from 35.3% in spring to 14% in summer). Growth periods from sowing to flowering stage were 122 and 61 days in spring and summer sowing date, respectively. Thus, summer sowing date is comparable with spring sowing date.
