Agriculture and horticulture
M. Nosrati Momvandi; E. Zeid Ali; M.J. Zarea; H. Mumivand; M. Kiani
Abstract
To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, ...
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To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, and carvacrol percentage) of Satureja rechingeri Jamzad, a factorial experiment was conducted in a randomized complete block design with three replications in 2017. Based on the results, all the mentioned traits except the stems to leaves ratio were affected by planting date and full fertilizer treatment. The planting date of April 21 and the application of full fertilizer increased all the studied traits except the carvacrol percentage and the stems to leaves ratio. The morning harvest time treatment increased the percentage and essential oil yield. The highest percentage of carvacrol (93.66%) was obtained in the triple interaction of planting date (March 20) × full fertilizer (two per thousand) × harvest time (evening) and the lowest one (82.77%) was obtained in the triple interaction of planting date (March 20) × no fertilizer application × harvest time (morning). The results showed that in the planting date of April 21 treatment, the application of full fertilizer caused better results in most of the mentioned traits. Also, the morning and evening harvest treatments caused the highest percentage and essential oil yield and carvacrol percentage. To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, and carvacrol percentage) of Satureja rechingeri Jamzad, a factorial experiment was conducted in a randomized complete block design with three replications in 2017. Based on the results, all the mentioned traits except the stems to leaves ratio were affected by planting date and full fertilizer treatment. The planting date of April 21 and the application of full fertilizer increased all the studied traits except the carvacrol percentage and the stems to leaves ratio. The morning harvest time treatment increased the percentage and essential oil yield. The highest percentage of carvacrol (93.66%) was obtained in the triple interaction of planting date (March 20) × full fertilizer (two per thousand) × harvest time (evening) and the lowest one (82.77%) was obtained in the triple interaction of planting date (March 20) × no fertilizer application × harvest time (morning). The results showed that in the planting date of April 21 treatment, the application of full fertilizer caused better results in most of the mentioned traits. Also, the morning and evening harvest treatments caused the highest percentage and essential oil yield and carvacrol percentage.
Agriculture and horticulture
F. Darabi; N. Abbasi; M.J. Zarea
Abstract
To investigate the role of putrescine and 24-epibrassinolide on the morphophysiological changes of Ocimum basilicum L. in the water deficiency tolerance, an experiment was conducted as a factorial split plot in a randomized complete block design with three replications in the research farm of Agriculture ...
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To investigate the role of putrescine and 24-epibrassinolide on the morphophysiological changes of Ocimum basilicum L. in the water deficiency tolerance, an experiment was conducted as a factorial split plot in a randomized complete block design with three replications in the research farm of Agriculture Faculty, Ilam University during 2017-19 crop years. The experimental treatments included the drought stress at three levels (40, 80, and 120 mm evaporation from Class A evaporation pan) in the main plots and putrescine foliar application at three levels (Put0: 0, Put1: 0.5, and Put2: 2 mM) and 24-epibrassinolide foliar application at three levels (Br0: 0, Br1: 0.5, and Br2: 2 μM) factorially in the subplots. The results showed that the multiple interaction of year, drought stress, putrescine, and 24-epibrassinolide had a significant effect on the traits including chlorophyll a, chlorophyll b, and basil essential oil percentage, so that the foliar application of 2 mM putrescine and 2 μM 24-epibrassinolide at all levels of drought stress, especially 80 mm evaporation from the evaporation pan, caused a further increase in these traits in both years of the experiment, which was higher in the first year than the second one. The optimal irrigation treatment (40 mm evaporation from evaporation pan) with application of 2 mM putrescine and 0.5 μM 24-epibrassinolide and drought stress treatments (80 and 120 mm evaporation from evaporation pan) with application of 2 mM putrescine and 2 μM 24-epibrassinolide had more leaves and secondary branches. The results of this study showed that the drought stress had an important role in reducing the basic factors in basil growth. In general, according to the results obtained, the foliar application of 2 mM putrescine with 2 μM 24-epibrassinolide to improve the physiological activities and increase the essential oil content, and 2 mM putrescine with 0.5 μM 24-epibrassinolide to increase the seed yield could be recommended in basil under drought stress conditions.
