List of Articles قطر طبق

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  1 - Effect of Bio Phosphate Fertilizer and Triple Super Phosphate Application on Yield, Yield Components, Phosphorus and Cadmium Concentration of Sunflower (Helianthus annuus L.) Seeds
  Nadia Nisi Alireza Shokohfar Khoshnaz Payandeh
  10.30495/jcep.2021.679980
  The high cost of chemical fertilizers used in agriculture and the environmental problems due to their use reveal the need to reappraise conventional plant nutrition practices. Integrated use of biofertilizers combined with synthetic fertilizers is one of the essential s More

  The high cost of chemical fertilizers used in agriculture and the environmental problems due to their use reveal the need to reappraise conventional plant nutrition practices. Integrated use of biofertilizers combined with synthetic fertilizers is one of the essential sustainable agricultural strategies. To this end, this study was carried out by using a factorial experiment based on randomized complete block design with three replications at the experimental field of Islamic Azad University, Ahvaz Branch during 2018 cropping season. The first factor was different amounts of triple superphosphate fertilizer with three levels (0, 50 and 100 kg.ha-1) and the second factor was phosphorus biofertilizer also with three levels (0, 100 and 200 g.ha-1). Result of analysis of variance revealed that the effect of different levels of biophosphorus fertilizer and triple superphosphate on all measured characteristics were significant but the interaction effect of treatments was not significant. Based on the results of this study, the highest seed yield, 1000 seed weight, seed oil percentage, head diameter and number of seed per head and lowest empty seed belonged to the use of 100 kg.ha-1 triple superphosphate with 200 g.ha-1 biophosphorus fertilizer. It seems triple superphosphate fertilizer to increase the concentration of soil cadmium by 54%, due to its impurities, including heavy elements, but increasing the levels of phosphorus fertilizer in the soil reduces the concentration of cadmium by 45%. According to these results, the application of 100 kg.ha-1 of triple superphosphate and 200 g.ha-1 of phosphorus fertilizer per hectare, compared to other treatments, may increase seed yield and absorption of elements of sunflower in this region. Manuscript profile
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  2 - Evaluation drought tolerance of sunflower inbred lines and synthetic cultivars at temperate climate of Kermanshah
  SEYED MEHDI SAFAVI
  At this study, the effect of drought stress on some agro-physiological characteristics of 15 sunflower genotypes including three check cultivars, eight inbred lines and four synthetic cultivars was evaluated using Randomized Complete Blocks Design (RCBD) with three repl More

  At this study, the effect of drought stress on some agro-physiological characteristics of 15 sunflower genotypes including three check cultivars, eight inbred lines and four synthetic cultivars was evaluated using Randomized Complete Blocks Design (RCBD) with three replicates under non-stress and drought stress conditions at Dryland Agricultural Research Sub-Institute (Sararood Station), AREEO, Kermanshah, Iran during 2013-2014 cropping year. The mean kernel yield of genotypes was 715 and 597 kg/ha under non-stress and stress conditions, respectively which shows a 19.02% reduction due to drought stress. Check cultivar “Zaria” and line “Sil-292” had the highest percentage of yield loss with more than 30%. Synthetic cultivars “Sil-94”, “Sil-54” and “Sil-96” had the lowest percentage of reduction with less than 5%. Kernel oil content ranged from 45.5 to 51.7% in non-stress conditions and from 35.4 to 49.9% in drought stress conditions. Drought stress caused about 10% decrease in kernel oil of the genotypes. Overall, drought stress caused early flowering, reduced agronomic and morphological traits and kernel oil content and increased relative electrolyte leakage and leaf relative water loss. Genotypes “SIL-54”, “SIL-42”, “SIL-140” and “SIL-237” were recognized as the most tolerant genotypes using ranking method and its parameters. These genotypes were identified as the best genotypes based on the biplot diagrams under the both conditions. Manuscript profile