Effects of planting date, full fertilizer, and harvest time on quantitative and qualitative yield of Satureja rechingeri Jamzad
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.
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