Seyyed Gholamreza Moosavi; Mohamad Javad Seghatoleslami; Mansour Fazeli-Rostampoor; Zeinolabedin Jouyban
Volume 4, Issue 3 , Spring 1393, , Pages 153-162
Abstract
In order to study the effect of water deficit stress and different nitrogen levels on flower yield, yield components and water use efficiency of Calendula officinalis L., an experiment was conducted as split plot based on randomized complete block design with three replications, at research field of ...
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In order to study the effect of water deficit stress and different nitrogen levels on flower yield, yield components and water use efficiency of Calendula officinalis L., an experiment was conducted as split plot based on randomized complete block design with three replications, at research field of Islamic Azad University, Birjand branch in 2009. In this experiment, irrigation treatments (irrigation after 60, 120 and 180 mm cumulative evaporation from pan class A) set as main plots and nitrogen rates (0, 60,120 and 180 kg N ha-1) set as sub plots. The results showed that increasing irrigation interval from 60 to 180 mm cumulative evaporation reduced flower number per m-2, biomass yield and plant height 65.6, 69.3 and 8.3%, respectively. Also in comparison with control, irrigation after 120 and 180 mm evaporation reduced flower dry yield 16.2 and 72%, respectively. However, the highest WUE was related to irrigation after 120 mm evaporation (0.161 and 0.788 kg m-3 for dry flower and biomass, respectively). Nitrogen fertilizer utilization significantly increased flower yield, flower number, biological yield, WUE and plant height, but there was not any significant difference between 120 and 180 kg N ha-1 treatments. Interaction of irrigation and nitrogen on all traits was not significant. Totally, the results indicated that treatment of irrigation after 120 mm evaporation with 120 kg N ha-1 application is suitable for marigold cultivation in Birjand
D. Hashemabadi; A.A. Mostofipour; A.R. Berimavandi; B. Kaviani; M. Zarchini
Volume 2, Issue 3 , Spring 1391, , Pages 147-154
Abstract
This study was done to evaluate the effect of different planting arrangements (square, lozenge and rectangular) and various concentrations of potassium sulfate (K2SO4) fertilizer (0, 100, 200 and 300 kg/ha) on yield and essential oils quantitative of Calendula officinalis L., a medicinal and ornamental ...
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This study was done to evaluate the effect of different planting arrangements (square, lozenge and rectangular) and various concentrations of potassium sulfate (K2SO4) fertilizer (0, 100, 200 and 300 kg/ha) on yield and essential oils quantitative of Calendula officinalis L., a medicinal and ornamental plant. The experiment was done as a factorial in randomized completely blocks design (R.C.B.D.) with 3 replications. The results showed that the plant height, the number of flowers, flowers dry weight, potassium content of aerial part, flower essential oil and carotenoids content in petals were significantly increased. The highest plant height (54.18 cm) was calculated from plants grown under 200 kg/ha K2SO4 and rectangular arrangement. Maximum number of flowers per square meter (727.93), flower dry weight per square meter (140.58 g), potassium content of aerial part (0.9 mg/L), essential oils content per square meter (0.27 g) and carotenoids content in petals (8.24 mg/L) were obtained from plants grown under soil conditions containing 300 kg/ha K2SO4 and with square arrangement. The results of current study recommend using of 300 kg/ha of K2SO4 and square planting arrangement for increasing the yield and essential oils content of calendula.