Mehdi Heydari-Rahni; Mohammad Nasri; Yousef Filizadeh; Pourang Kasraie
Abstract
The effects of chemical fertilizer of urea in 5 levels (0, 30, 60, 90 and 150 kg ha-1) and biofertilizers in 4 levels (Nitroxin, Phosphate barvar2, mixed of both and control) on quantity and quality yield of valerian are studied during 2016 to 2020. Measured parameters include valernic acid (percent), ...
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The effects of chemical fertilizer of urea in 5 levels (0, 30, 60, 90 and 150 kg ha-1) and biofertilizers in 4 levels (Nitroxin, Phosphate barvar2, mixed of both and control) on quantity and quality yield of valerian are studied during 2016 to 2020. Measured parameters include valernic acid (percent), valernic acid (g ha-1), root dry weight (kg ha-1), shoot dry weight (kg ha-1), root diameter (mm), root length (cm), leaf width (cm), and leaf length (cm). This study is carried out at the Homad-Absard Agricultural Complex in Damavand city, Tehran Province, Iran, as factorial layout based on a randomized complete blocks design with 3 replications. Results show that the biofertilizers have had a significant effect (p≤0.01) on the all quantity and quality parameters studied. Unlike the urea chemical fertilizer at all levels, which have had a negative effect on the yield and amount of valernic acid (percent), bio-fertilizers has increased it. Maximum and minimum amount of valernic acid (percent) are measured in control and 150 kg ha-1 urea, respectively. The highest root dry weight belongs to interaction of Nitroxin+ Phosphate barvar2+150 kg urea (665 kg ha-1) and control (221 kg ha-1) respectively. Results of this experiment show that biofertilizers with positive effects on the parameters are able to replace the chemical fertilizers.
Kamal Sadat Asilan
Abstract
In order to investigate the effect of nitrogen, phosphorus, and potassium elements on fatty acid profiles, oil percentage, grain yield, and flax seed oil, Lirina cultivar, a factorial experiment has been conducted during 2019, based on a randomized complete block design with three replications in Hashtgerd ...
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In order to investigate the effect of nitrogen, phosphorus, and potassium elements on fatty acid profiles, oil percentage, grain yield, and flax seed oil, Lirina cultivar, a factorial experiment has been conducted during 2019, based on a randomized complete block design with three replications in Hashtgerd research farm, Alborz Province. It has employed a factorial arrangement in a randomized complete block design with three replications with the factors involving three levels of nitrogen fertilizers (N1=30, N2=60, and N3=90 Kgha-1, three levels of phosphorus fertilizers (P1=40, P2=80, and P3=120 Kg.ha-1), and three levels of potassium fertilizers (K1=40, K2=80, and K3=120 Kg.ha-1). Result show that the highest amount of linolenic acid (43.99%), linoleic acid (17.68%), and palmitic acid (6.02%) have occurred in 30 kg. ha-1 nitrogen and 40 kg.ha-1 phosphorus. The highest amount of oleic acid (27.49%) and stearic acid (5.25%) belong to 30 kg.ha-1 phosphorus. Based on the results, the highest amount of grain yield (2384 kg.ha-1) and oil yield (939 kg.ha-1) are recorded in 90 and 120 kg.ha-1 nitrogen and phosphorus, respectively. Therefore, according to the results, different levels of fertilizer on percentage of oil has had no significant effect.
siavash ariafar; Ali Reza Sirousmehr
Abstract
In order to study the effects of water stress and municipal compost on qualitative and quantitative characteristics of Nigella sativa, this experiment was conducted in 2012 at the Agricultural Research Station of University of Zabol, Iran in a complete randomized block in split plot design with three ...
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In order to study the effects of water stress and municipal compost on qualitative and quantitative characteristics of Nigella sativa, this experiment was conducted in 2012 at the Agricultural Research Station of University of Zabol, Iran in a complete randomized block in split plot design with three replications. Treatments included irrigation intervals: Every seven days (without stress), every nine days (mild stress) and every 12 days (severe stress) and municipal compost treatments include: without municipal compost application (control), 10, 20 and 30 tons per hectare. The results showed that the effect of water stress was significant on the biological and seed yield, proline and chlorophyll (a). Also biological yield, grain yield and chlorophyll (a) decreased in water stress condition. But proline content in leaves increased with increasing stress level. According to results highest biological yield, grain yield, essential oil percentage, proline, chlorophyll a, chlorophyll b, total chlorophyll and carotenoids were obtained In municipal compost application. The Interaction between water stress and municipal compost treatments on chlorophyll a, chlorophyll b, total chlorophyll and carotenoid were significant. According to results, the best treatment at the increase on seed yield and essential oil content were application 30 tons per hectares of municipal compost in Zabol weather conditions.