Shabnam Moradi; Babak Pasari; Reza Talebi
Abstract
To study the effects of mycorrhiza, organic and chemical fertilizers on growth of tobacco plant, an experiment was carried out as split plots in a randomized complete block design with three replications in Marivan during 2014-2015. The main factor was two levels of inoculation by mycorrhiza including ...
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To study the effects of mycorrhiza, organic and chemical fertilizers on growth of tobacco plant, an experiment was carried out as split plots in a randomized complete block design with three replications in Marivan during 2014-2015. The main factor was two levels of inoculation by mycorrhiza including no inoclution and inoclution by mycorrhiza (Glumus interaradices) and subplots were organic and chemical fertilizers in five levels as, control (distilled water), fulvic acid, seaweed extract (Ascophyllum nodosum), urea and fulvic acid + seaweed extract + urea. The results showed that the studied characters were not affected significantly by mycorrihza. Also, the results of foliar application of fertilizers were showed that the most characters were affected significantly. Mean comparison of lower part of leaves weight showed that maximum leaf fresh weight in hectare and leaf dry weight in hectare was obtained by foliar application of seaweed extract. The maximum value of leaf length was achieved in fulvic acid and urea treatments. Mean comparison of middle part of leaves weight showed that the maximum value of leaf fresh weight in hectare was obtained by seaweed extract, and the maximum leaf dry in hectare was achieved by fulvic acid and distilled water (control) treatments. In upper part of leaves weight showed the maximum value of leaf fresh weight in hectare and income were obtained by fulvic acid. In this experiment, the highest income was achieved by fulvic acid spraying treatment and following by seaweed extract and fulvic acid + seaweed extract + urea.
Alireza Pirzad; Manoochehr Alizade; Abdollah Hassanzadeh Gorttapeh; Reza Darvishzade
Abstract
To evaluate the effect of gamma rays on the seeds and amounts of nitrogen on growth and yield of chamomile (Chamomilla recutita synonym Matricaria chamomilla), a factorial experiment was conducted based on randomized complete block design with three replications at the Research Farm of Agriculture College ...
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To evaluate the effect of gamma rays on the seeds and amounts of nitrogen on growth and yield of chamomile (Chamomilla recutita synonym Matricaria chamomilla), a factorial experiment was conducted based on randomized complete block design with three replications at the Research Farm of Agriculture College of Shahid-Beheshti.-Urmia in 2010. Treatments were gamma rays from cobalt-60 on chamomile seeds cv. ‘Bodegold’ (zero, four, eight, 12, 16, and 20 Gray) and different levels of nitrogen (zero, 50, 100, and 150 kg/ha, urea after appearance of the 4th leaf). The highest leaf dry weight per plant (12.5 g) and per hectare (4194 kg/ha), stem dry weight per plant (49 g) and biomass (19995 kg/ha) were obtained at 8 gray and 100, 100, 150, and 150 kg/ha of nitrogen. The highest dried flower yield at the second harvest (104 kg/ha) were obtained from 20 gray by 100 kg/ha nitrogen, and the yield of the third harvest (122 kg/ha) was from 20 gray of gamma irradiation. While, the highest flower yield at the first harvest (419 kg/ha) and total yield (533 kg/ha) were produced from 0 gray and 150 kg/ha nitrogen. Essential oil percent did not affected by treatments, but despite the significant interaction effect of gamma irradiation and nitrogen on the yield of essential oil, means comparison showed no significant differences among treatments. Yield of dried flower in the first harvest, had the greatest impact on the harvest index.