Parisa Karami; farzad mondani; Rozhin Ghobadi
Abstract
Objective: Water deficit stress can be considered one of the most important abiotic stresses, and due to its great impact on the performance of various plants, a large part of agricultural planning is related to it. Therefore, the aims of this investigation were to evaluate effects of irrigation levels ...
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Objective: Water deficit stress can be considered one of the most important abiotic stresses, and due to its great impact on the performance of various plants, a large part of agricultural planning is related to it. Therefore, the aims of this investigation were to evaluate effects of irrigation levels on some eco-physiological traits and grain yield of some current corn hybrids under Kermanshah regions.Methods: A split plot experiment was conducted based on randomized complete block design with three replications in the research farm of the Campus of Agriculture and Natural Resources of the Razi University in 2018. The main factor was irrigation regimes (IR) which included supplying 130, 100, 70% water requirement (IR130%, IR100% and IR70% respectively), and the sub factor comprised maize hybrids (SC704, Simon and BC678). Regardless of the type of treatments, the irrigation was carried out immediately after seed sowing and preferably until the six-leaf development stage, and then the irrigation treatment started. The evaluated traits included development stages, yield and yield components, and water use efficiency. To analyze the data extracted from this study, first the normality test of the data was performed using the Kolmogorov-Smirnov method, then the normalization of non-normal data was performed using the Box-Cox method using the Minitab software (version 16). For variance analysis and comparison of means, the LSD test was used at the 5% level using the SAS software (version 9.4).Results: Results showed in the IR70%, length of developmental stages decreased with the reduction of water content, but reaction of developmental stages was different among hybrids. The highest total dry weight (16.96 ton ha-1) and grain yield (7.43 ton ha-1) were observed in IR130%, with a decrease of 30 and 60% in the amount of irrigation water, total dry weight decreased by 18.0 and 28.1%, and grain yield decreased by 15.5 and 39.8%, respectively. Total dry weight of SC704 and Simon hybrids in response to irrigation levels was relatively similar and higher than the BC678 hybrid. However, grain yield of the Simon hybrid was higher than that of the other hybrids. The highest (0.83 g mm-1) and lowest (0.66 g mm-1) grain yield of water use efficiency was related to Simon and BC678 hybrids, respectively. Simon hybrid had higher grain yield and water use efficiency. Irrigation levels had no significant effect on water use efficiency.Conclusion: Overall, the results showed that the Simon hybrid had higher grain yield and water use efficiency. The irrigation levels did not affect water use efficiency, indicating that the response of this trait to the irrigation levels was the same, which can be very important for the optimal use and saving of water consumption. Therefore, according to the results of this study, cultivation of Simon hybrid under optimal irrigation conditions for the climatic conditions of Kermanshah is recommended.
Farzad Mondani; Amin Yari; Alireza Bagheri; Hamidreza Chaghazardi
Abstract
Objective: Intercropping is one of the most important crop management methods to achieve sustainable agriculture goals. Therefore this study was conducted to evaluate safflower with lentil intercropping under dryland conditions.Methods: The experiment was conducted as a randomized complete block design ...
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Objective: Intercropping is one of the most important crop management methods to achieve sustainable agriculture goals. Therefore this study was conducted to evaluate safflower with lentil intercropping under dryland conditions.Methods: The experiment was conducted as a randomized complete block design with three replications and five treatments during 2018-2019 at the research farm of the Razi University. The experimental treatments included Safflower monoculture, Safflower and Lentil intercropping with 25:75 ratio, Safflower and Lentil intercropping with 50:50 ratio, Safflower and Lentil intercropping with 75:25 ratio, and Lentil monoculture. Safflower was considered as the main plant and Lentil as the alternative plant. The evaluated traits were leaf area index, radiation absorption, crop growth rate, relative growth rate, total dry matter, radiation use efficiency, and grain yield.Results: The results showed that the leaf area index and consequently, radiation absorption in intercropping compared to monoculture increased by 6.2% and 48%, respectively. Trend of changes in safflower’s crop growth rate in intercropping canopy compared to monoculture did not change, but the relative growth rate showed a 7.7%increase. The amount of total dry matter and radiation use efficiency in intercropping canopy did not change much compared to monoculture. Grain yield of Safflower was higher in monoculture (2472 kg.ha-1), which did not significantly differ from the treatments with 75:25 (2294 kg.ha-1) and 50:50 (2107 kg.ha-1) ratio of Safflower and Lentil.Conclusion: Generally, the results showed that the intercropping of safflower with lentils was not economically beneficial, however, alternative intercropping patterns with ratios of 25:75 and 50:50 of safflower and lentil were more efficient in terms of the investigated traits.
faride noroozi shahri; Saeid Jalali Honarmand; mohsen saeidi; farzad mondani
Abstract
Farmers have traditionally used fire and smoke in various parts of agriculture. Several studies have reported that smoke bioactive components acts as a new family of plant growth regulators. In order to evaluate and explore the potential of smoke-water as a phytohormone on growth characteristics and ...
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Farmers have traditionally used fire and smoke in various parts of agriculture. Several studies have reported that smoke bioactive components acts as a new family of plant growth regulators. In order to evaluate and explore the potential of smoke-water as a phytohormone on growth characteristics and biological yield of medicinal plants of basil and lemon balm an experiment was conducted as a split plot based on complete randomized block design with three replications. This experiment was conducted in research greenhouse of Razi University in 2017. In this study, eight factors were including four concentrations smoke-water (included 1:5000, 1:1000, 1:500 and 1:100 (v/v)) accompanying with cytokinin, auxin and gibberellic acid (each of them with concentration 50 µM) and control were assigned to the main plots and two harvest stages were assigned to the sub plots. Results indicated that the gibberellic acid significantly increased basil canopy height in comparison to others treatments. While the maximum canopy height in lemon balm was obtained from smoke-water at concentrations of 1:500 (v/v). Foliar-application with cytokinin resulted in the highest leaf area index in both plants compared to control. Eventually the highest biomass yield in basil and lemon balm was obtained from smoke-water at concentrations of 1:100 (v/v) that has increased by 52 and 39 percent, respectively, compared with control. In the current study applying high level of smoke-water foliar (1:100 and 1:500 (v/v)) induced on growth characteristics and biological yield, similar to phytohormone treatments especially cytokinin.
Babak Gholami; Faride Noroozi shahri; Farzad Mondani; Saeid Jalali honarmand; Mohsen Saeidi
Abstract
In order to evaluating effect of smoke-water and urea fertilizer on some growth indices, grain yield and yield components of wheat, a field experiment was conducted as a split plot based on Randomized Complete Block Design with three replications. The experiment was conducted during the season of 2015-2016 ...
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In order to evaluating effect of smoke-water and urea fertilizer on some growth indices, grain yield and yield components of wheat, a field experiment was conducted as a split plot based on Randomized Complete Block Design with three replications. The experiment was conducted during the season of 2015-2016 at Razi University Research Station, Iran. The experimental treatments were different levels of urea fertilizer application (included 90, 180, 300 and 360 kg ha-1) as main plot and leaf foliar application with different concentrations of smoke-water (included 0, 0.001%, 0.01%, 0.1% and 1% v/v) as sub plot. The results showed that smoke-water significantly improved all evaluated traits and increased wheat grain yield compared to control treatment in all urea fertilizer levels. The highest grain yield (922 g m-2) was obtained in application of 350 kg ha-1 urea and smoke-water at concentration of 1% v/v and the lowest grain yield (339 g m-2) was related to application 90 kg ha-1 urea and foliar with distilled water. The grain yield improved 15.22%, 11.36%, 7.18% and 7.67% by application of 90, 180, 300 and 360 urea kg ha-1 respectively, in smoke-water 1% concentration compared to the control treatment. It seems that smoke-water via improve increasing nitrogen efficiency could increase growth indices and grain yield of wheat.