Y. Behzadi; A. Salehi
Abstract
The aim of this study was to determine the effects of biological, organic, and chemical fertilizers on the uptake of nitrogen (N), phosphorus (P), potassium (K), grain yield, and essential oil in anisum (Pimpinella anisum L.). The experiment was carried out in the agricultural research field of Yasouj ...
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The aim of this study was to determine the effects of biological, organic, and chemical fertilizers on the uptake of nitrogen (N), phosphorus (P), potassium (K), grain yield, and essential oil in anisum (Pimpinella anisum L.). The experiment was carried out in the agricultural research field of Yasouj University in 2013, as a randomized complete block design with three replications. The treatments consisted of pure vermicompost (zero, 5 and 10 ton.ha-1), biofertilizer (Azotobacter, Barvar-1), biological phosphate fertilizer (Barvar-2) and the mixed Barvar-1 and Barvar-2, urea fertilizer, nano-biofertilizers and combined treatments of vermicompost (2.5, 5 and 7.5 ton.ha-1) with biological fertilizers Barvar-1,2 and the mixed Barvar-1,2. Results showed that the maximum nitrogen (1.390%) phosphorus (0.290%) potassium (1.866%) and chlorophyll a+b (0.410 ml.g-1) were obtained by the application of vermicompost at 10ton.ha-1. Also, maximum grain yield (595.90 kg.h-1) and essential oil yield (16.60 kg.h-1) were obtained by the application of vermicompost at 10ton.ha-1, showing no significant difference with combined treatment of vermicompost at 7.5 ton.ha-1 and Barvar-1,2. The minimum values for the study traits were obtained from the control treatment. According to the results, it appears that the application of 7.5 ton.ha-1 vermicompost is the best treatment to produce anise grain yield in organic system.
A. Kheiry; M. Arghavani; M. Khastoo
Abstract
The present study aimed to investigate the effect of application of organic fertilizers on the yield of medicinal plant, calendula (Calendula officinalis L.). The experiment was conducted in a randomized complete block design with 10 treatments and 3 replications in the research farm of Zanjan University. ...
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The present study aimed to investigate the effect of application of organic fertilizers on the yield of medicinal plant, calendula (Calendula officinalis L.). The experiment was conducted in a randomized complete block design with 10 treatments and 3 replications in the research farm of Zanjan University. Treatments included cattle manure, poultry manure, and vermicompost, each at three levels (5, 10, and 15 tons per hectare) and control (without fertilizer). The measured traits were the thousand seed weight, number of capitules per plant, leaf area, plant height, petal dry weight, capitule diameter, chlorophyll content index, flavonoids, carotenoids, and essential oil percentage. Data were analyzed by SAS software, and mean comparisons was performed by Duncan's test. The results showed significant effects of fertilizer on thousand seed weight, capitule number per plant, leaf area, carotenoids, and essential oil percentage at p≤0.01, and plant height, petal dry weight, and flavonoid at p≤0.05. The type of fertilizer had no significant effect on capitule diameter and leaf chlorophyll content. Overall, the results showed that using organic fertilizers had favorable impact on yield, growth characteristics, and active ingredients content of Calendula.
S. Nasirzade; S. Fallah; Sh. Kiani; A. Mohammadkhani
Abstract
In order to investigate the response of quantitative and qualitative characteristics of isabgol (Plantago ovata Forssk.) to different levels of cow manure and nitrogen fertilizers, an experiment was conducted in a randomized complete blocks design with four replications at the research farm, Shahrekord ...
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In order to investigate the response of quantitative and qualitative characteristics of isabgol (Plantago ovata Forssk.) to different levels of cow manure and nitrogen fertilizers, an experiment was conducted in a randomized complete blocks design with four replications at the research farm, Shahrekord University in 2011. Treatments consisted of: control (no fertilizer) and three levels of nitrogen fertilizer (30, 60 and 90 N/ha in the form of urea) and three levels of cow manure (14.29, 28.58 and 42.78 Mg/ha). Results showed that there were no significant differences in quantitative and qualitative characteristics between cow manure and urea fertilizer applications. The highest grain yield and aboveground biomass (1618 and 9464 kg/ha, respectively) were observed in 90 kg N/ha from urea fertilizer, but it had no significant difference with that of the 42.87 Mg/ha of cow manure. The application of 42.87 Mg/ha of cow manure resulted in the greatest seed mucilage amount (%26.75), swelling factor (10.38 ml) and mucilage yield (415 kg/ha), but swelling factor and mucilage yield of this treatment had no significant difference with that of the 90 kg N/ha from urea fertilizer. In general, it is concluded that the use of cow manure in isabgol production, not only does not reduce grain and mucilage yield of isabgol but also it can produce high- mucilage seeds, resulting in reduced pollution caused by the use of chemical fertilizers.
A. Salehi; A. Ghalavand; F. Sefidkon; A. Asgharzade
Abstract
In order to study the effects of zeolite, bio and organic fertilizers on N, P, K concentration, essential oil content and yield in organic cultivation of German Chamomile (Matricaria chamomilla), a factorial experiment in randomized complete blocks design with twelve treatments and three replications ...
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In order to study the effects of zeolite, bio and organic fertilizers on N, P, K concentration, essential oil content and yield in organic cultivation of German Chamomile (Matricaria chamomilla), a factorial experiment in randomized complete blocks design with twelve treatments and three replications was conducted in the faculty of agriculture, Tarbiat Modares University, 2005. The factors were PGPR inoculums (inoculated and no inoculated), zeolite (0 and 9 tons/ha) and vermicompost (0, 5, 10 tons/ha). Results showed that the highest concentration of N, P and K in plant, essential oil content and yield were obtained with PGPR inoculums. Zeolite also showed significant effects on the mentioned traits except P concentration. With application of zeolite 9 ton/ha, essential oil content, essential oil yield, N and K concentration were increased. Essential oil content, essential oil yield, N, P and K concentration were also increased with increasing of vermicompost levels as the highest values were obtained with application of 10 ton/ha vermicompost. There was positive and synergistic interaction between PGPR inoculums and vermicompost on N concentration as the highest and lowest N concentration percentage in herb were obtained in treatments of V3B2 (1.48) and V1B1 (1.12), respectively. According to the results, it appears that application of 10 tons vermicompost, inoculation with PGPR and 9 tons zeolite was the best treatment in production of German chamomile essential oil yield in organic system.
