A. Hassanzadeh; M. Heidari; H. Khoshghalb; H. Ghorbani Ghozhdi
Abstract
In order to study the effect of different amounts of nitrogen fertilizer and foliar application of boron on some physiological traits in karela plants (Momordica charantia L.), a factorial experiment in a randomized complete block design with three replications was conducted at the Sharood University ...
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In order to study the effect of different amounts of nitrogen fertilizer and foliar application of boron on some physiological traits in karela plants (Momordica charantia L.), a factorial experiment in a randomized complete block design with three replications was conducted at the Sharood University of Technology in 2013. The treatments consisted of three levels of nitrogen fertilizer: 75, 150 and 225 kg N.ha-1 (urea source) as the first factor and four foliar applications of boron including: 0, 1, 2 and 3 g per liter of boric acid as the second factor. The traits measured in this study included the length and diameter of fruit, fruit yield, chlorophyll "a","b", and carotenoids, the conent of sugar nitrate and nitrate reductase enzyme activity. The results showed that, nitrogen fertilizer except diameter of fruit had significant on all of attribute traits. Foliar application of boron in this study had significant effect on fruit yield, the content of chlorophyll "b" (P<0.05) in leaf, sugar and the amont of nitrate in leaf and fruit (P<0.01). Interaction between nitrogen fertilizer and foliar application of boron had significant effect on fruit yield and leaf nitrate content. The results showed that the highest fruit yield was obtained at 150 kg N.ha-1 and 2 g per liter of boron. In addition, the highest amount of nitrate in leaf and fruit tissues was obtained at 225 kg N. ha-1 treatment. Finally, 150 kg N. ha-1 fertilizer and 2 g per liter of boron was identified as the best treatment to obtain maximum yield and fruit quality.
M. Heidari; M. Mobasri Moghadam
Abstract
In order to study the effects of rate and time of nitrogen application on yield and yield components of karela (Momordica charantia L.), a field experiment as split plot design with three replications was conducted in 2011 at Research Center for Agriculture and Natural Resources of Sistan. The treatments ...
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In order to study the effects of rate and time of nitrogen application on yield and yield components of karela (Momordica charantia L.), a field experiment as split plot design with three replications was conducted in 2011 at Research Center for Agriculture and Natural Resources of Sistan. The treatments consisted of three levels of nitrogen fertilizer, obtained from urea source, at the rate of N1=75, N2=150 and N3=225 kg N.ha-1 as main plot, and three time application including: T1=1/2 at 3 and 4 leaves and 1/2 before flowering, T2= 1/2 at 3 and 4 leaves and 1/2 after fruit to start and T3=1/3 at 3 and 4 leaves, 1/3 before flowering and 1/3 after fruit to start were used as sub plot. Results showed that nitrogen application had significant effect on the yield and amount of biomass production (p < 0.01) in karela. By increasing nitrogen level from 75 to 225 kg N.ha-1, yield and biomass values increased. The amount of yield increased about 63.1%. Nitrogen treatment had positive and significant effect on yield components including plant height, number of lateral branches, number of fruits per plant, number of seeds per fruit, the length and diameter of fruit. Timing of nitrogen application had only significant effect on yield, the amount of biomass production, number of fruits per plant, length and diameter of fruit. The maximum yield of karela was obtained at T2 treatment.
S. Sarani; M. Heidari; M. Glavi; B. Siahsar
Abstract
To evaluate the effects of salinity in the presence and absence of iron on growth, photosynthesis pigments and electrophoresis bands in two chamomiles, an experiment was conducted as completely randomized factorial design with three replicates at university of Zabol in 2009. The treatments were two genuses ...
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To evaluate the effects of salinity in the presence and absence of iron on growth, photosynthesis pigments and electrophoresis bands in two chamomiles, an experiment was conducted as completely randomized factorial design with three replicates at university of Zabol in 2009. The treatments were two genuses of chamomile (German and Roman chamomile), four levels of salinity (0, 50, 100 and 150 mM NaCl) and two levels of iron (0 and 100 μmol). Results showed that, by increasing salinity from 0 to 150 mM NaCl, fresh and dry weight of shoot were reduced but root dry weight was added. At the absence of iron treatment, fresh and dry weight of both shoot and root were reduced in two genus of chamomile. Salinity decreased the amount of two pigments chlorophyll a and b and increased the amount of carotenoids. At the absence of iron, the amount of chlorophyll ‘a’ (32/9) and chlorophyll ‘b’ (35/5) percent decreased in comparison to control treatment (100 μmol). Unlike chlorophyll, at the absence of iron treatment, the amount of carotenoid was added. At the salinity stress from 0 to 150 mM, many protein bands in Roman chamomile were excluded. However, at the levels of 50 and 100 mM NaCl, a 42 KDa fraction band in this material was synthesized, but at the highest level of salinity (150 mM NaCl) many of their bands were removed. Presumably, the 150 mM NaCl is out of tolerance of Roman chamomile genotype. In this study, at the German chamomile genotype under salinity and iron deficiency no bonds were not removed and two bands 14 and 18 KDa were appeared.
A.R. Rezapor; M. Heidari; M. Galavi; M. Ramrodi
Abstract
In order to study the effects of water stress and different amounts of sulfur fertilizer on the grain yield, grain yield components, two osmotic components (carbohydrate and proline) and essential oil yield in Nigella sativa L. a field experimental split-plot design with three replications was conducted ...
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In order to study the effects of water stress and different amounts of sulfur fertilizer on the grain yield, grain yield components, two osmotic components (carbohydrate and proline) and essential oil yield in Nigella sativa L. a field experimental split-plot design with three replications was conducted in 2009 at Ghaen city. Treatments included three levels of irrigation as 50, 100 and 150 mm evaporation from class A pan evaporation in main plot and four levels of sulfur fertilizer included 0, 75, 150 and 225 kg ha-1 as Bentonite in sub plot. Results showed that water stress significantly affect the grain yield of Nigella sativa as grain yield decreased up to 22.8% at the level of 150 mm evaporation from the class A evaporation. Except 1000-seed weight, water stress significantly decreased all grain yield components, including biomass production, the number of capsules per plant and seeds per capsule. Maximum reduction at the highest level of water stress related to the number of seed capsules (31.64 percent). Carbohydrate and proline increased under water stress while essential oil yield decreased in Nigella sativa. Sulfur fertilizer improved grain yield as applying 225 kg/ha sulfur fertilizer increased it up to 7.2 percent. Sulfur fertilizer especially at 150 kg/ha had significant positive effects on the grain yield components, osmotic solutes and essential oil yield.
E. Arazmjo; M. Heidari; A. Ghanbari
Abstract
In order to study the effects of water stress and three sources of fertilizers on flower yield, physiological parameters (chlorophyll a and b, proline and carbohydrate concentration), sodium and potassium in Chamomile (Matricaria chamomoilla L.) a field experiment in split plot design with three replications ...
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In order to study the effects of water stress and three sources of fertilizers on flower yield, physiological parameters (chlorophyll a and b, proline and carbohydrate concentration), sodium and potassium in Chamomile (Matricaria chamomoilla L.) a field experiment in split plot design with three replications was conducted in 2008 at Zabol University. Treatments included W1 (90% FC or Control), W2 (75% FC) and W3 (50% FC) as main plot and three sources of fertilizers: F1 (Control or non fertilizer application), F2 (chemical fertilizer), F3 (manure fertilizer) and F4 (compost) as sub plots. Results showed water stress at W3 treatment, reduced dry flower yield about 18.1%. In this study, however the highest flower yield was obtained from W1 and use of chemical fertilizer treatments but at W3 treatment, among the fertilizer, manure fertilizer had the best effect on flower yield in Chamomile. Water stress increased the activity of substance but the highest active substance was obtained in W2 and use of chemical fertilizer. In this experiment, chlorophyll a and b and K contents in leaves by impact of water stress decreased but free proline, total soluble carbohydrate concentration and sodium were increased under water stress. Use of manure fertilizer had the highest positive effects on physiological parameters and potassium uptake under water stress in chamomile.
A. Lotfi; A.A. Vahabi Sedehi; A. Ganbari; M. Heydari
Volume 24, Issue 4 , February 2009, , Pages 506-518
Abstract
In order to investigate the effects of the two factors (deficit irrigation and manure) on yield and quality characteristic of the Plantago ovata Forssk. and experiment was conducted at the Research Farm, Zabol University. For this purpose split plot design based on completely randomized block with 4 ...
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In order to investigate the effects of the two factors (deficit irrigation and manure) on yield and quality characteristic of the Plantago ovata Forssk. and experiment was conducted at the Research Farm, Zabol University. For this purpose split plot design based on completely randomized block with 4 replications was used. Results of the variance analysis indicated that there were significant difference between irrigation levels on the yield and it’s five dependent traits except 1000 seeds weight and Biomass. The application of manure showed significant effect for all traits except 1000 seeds weight and Plant height. Levels of irrigation and manure had no significant effects on the quality characters such as amount of mucilage and swelling factor.
