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Effect of irrigation intervals, nitrogen rate and nitrogen splitting on essence of German chamomile (Matricaria chamomilla L.)
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Abstract: (5311 Views) |
| In order to determine the best irrigation interval, nitrogen rate and nitrogen splitting on essence of German chamomile (Matricaria chamomilla L.), a field experiment was conducted in the Experimental Field of the Islamic Azad University of Tabriz, in 2006-2007 cropping season. The experiment was established as a randomized complete blocks design using a split plot factorial arrangement and three factors including irrigation intervals (I1=6 I2=12, I3=18 days) in main plots, and factorial combination of nitrogen (urea) rate (N1=50 N2=100, N3=150 kg ha-1) and nitrogen splitting (T1= 100% at planting time T2= 50%:50% at planting and stem elongation stages, T3= 25%:50%:25% at planting, stem elongation and early flowering stages, respectively) in subplots. Results revealed that application of 100 kg ha-1 and increasing irrigation intervals from 6 to 12 days had positive effect on flower number per plant. The highest dry flower yield (378.8 kg ha-1) belonged to I1N2. Application of nitrogen fertilizer at T2 increased dry flower yield up to 350.5 kg ha-1, in comparison with T1 and T3, respectively. Flower essence content was not affected by nitrogen fertilizer splitting however, it was affected by two other factors. Essence yield ranged from 1.56 l ha-1 in I3N3 up to 3.63 l ha-1 in I2N2. Nitrogen fertilizer application at T1 and T3, both caused a significant reduction on flower essence. |
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| Keywords: German chamomile, Irrigation intervals, Matricaria chamomilla L., Nitrogen rate, Nitrogen splitting |
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Full-Text [PDF 3646 kb]
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2015/02/28 | Accepted: 2015/02/28 | Published: 2015/02/28
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