Hasan Mousapour; Ahmad Ghanbari; Mohammad Reza Asghari pour
Abstract
This experiment was conducted to examine the effect of sowing date and different combinations of ajwain and isabgol intercropping on the grain yield, yield components, ajwain essential oil yield, weed control, and the mucilage percent of isabgol as split plot based on RCBD with three replications in ...
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This experiment was conducted to examine the effect of sowing date and different combinations of ajwain and isabgol intercropping on the grain yield, yield components, ajwain essential oil yield, weed control, and the mucilage percent of isabgol as split plot based on RCBD with three replications in Zabol University research farm in 2013. The main factors included two sowing dates of January 09 and February 08. The six additive cropping patterns including sole cropping of ajwain, sole cropping of isabgol, 25% isabgol + 100% ajwain, 50% isabgol + 100% ajwain, 75% isabgol + 100% ajwain, 100% isabgol + 100% ajwain comprising subplot. The results revealed that delayed sowing led to significant increase in ajwain essential oil percentage, however, seed and biological yield, essential oil yield and 1000-seed weight of ajwain decreased by 12.31, 13.7, 0.5 and 35.1%, respectively. In addition, sowing delaying did not have significantly impact on grain and biological yield of isabgol. Intercropping patterns significantly reduced yield and yield components of both crops. The highest seed yield of ajwain (2309 kg.ha-1) and isabgol (539 kg.ha-1) were obtained in sole cropping. The lowest dry weight of weeds was obtained from the planting date of January and cropping pattern of 100% isabgol + 100% ajwain. The highest LER was observed in cropping patterns of 50 and 75 of isabgol + 100% ajwain, that it is indicated yield advantage in intercropping over monocropping.
Hasan Mosapour Yahyaabadi; Mohammad Reza Asgharipour
Abstract
In this study, the effect of drought and different concentrations of silicon was examined on seed yield, essential oil percentage and physio-chemicals properties in fennel plant. The experimental design was a split plot with three irrigation regimes: irrigation at 100, 70 and 40 percent of FC comprising ...
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In this study, the effect of drought and different concentrations of silicon was examined on seed yield, essential oil percentage and physio-chemicals properties in fennel plant. The experimental design was a split plot with three irrigation regimes: irrigation at 100, 70 and 40 percent of FC comprising the main treatments, and five levels of silicon foliar sprays (0, 2.5, 5, 7.5 and 10 mM) as sub-treatments that were applied with three replications. The experiment was conducted in 2014 at the Zabol University research farm in Zabol, south Iran. Limited irrigation significantly decreased chlorophyll, carotenoids, leaf relative water content, while electrolyte leakage showed a 2 -fold increase over the control. In limited irrigation conditions 7.5 mM silicon increased relative water content, chlorophyll, antocianine, proline and soluble sugare by 38, 30, 38, 12 and 22 percent, respectively, while decreased electrolyte leakage by 28 perent over the control. These results suggested that silicon spraying by photosynthetic pigments and soluble osmolytes increasing could increase the ability of plants to drought stress, and in this way increased seed yield by 61 percent under severe stress conditions.