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        1 - Study of the chemicals and biological interaction effects on quantitative and qualitative characteristics of some bread wheat cultivars in Shoushtar climatic
        Maedeh Seyedi Mani Mojaddam Teymor Babaei Nejad Nazli Derogar
        In order to study the combined effects of chemical and biological fertilizers on quantitative and qualitative characteristics of wheat cultivars in Shoushtar, this research was carried out as split-plot based on randomized complete blocks design with three replications More
        In order to study the combined effects of chemical and biological fertilizers on quantitative and qualitative characteristics of wheat cultivars in Shoushtar, this research was carried out as split-plot based on randomized complete blocks design with three replications in 2014-2015. The main plots were comprised of 4 fertilizer levels including 100% chemical fertilizer (nitrogen + phosphorus),75% chemical fertilizer along with biological fertilizer (fertile 2 and azotobacter 2), 50% chemical fertilizer along with biological fertilizer (fertil2 and azotobacter2),and solely biological fertilizer, and the sub plots included three wheat cultivars (chamran, varinak, and S83).The results showed that interaction between fertilizer and cultivar was significant on all grain traits, grain protein, seed nitrogen percentage and seed phosphorous content. The highest biological yield and grain yield, with an average of 12 tons per hectare and 6 tons per hectare, were related to 100% fertilizer treatment and Chamran cultivar.The highest percentage of protein, nitrogen percentage and phosphorus percentage were obtained from 100% fertilizer application. In most cases, there was no significant difference between treatments of 100% and 75% of fertilizer and biological fertilizer for measured traits. In general, it can be stated that using 75% chemical fertilizer and biofertilizer treatment, can be used to reduce the use of chemical fertilizers. Manuscript profile
      • Open Access Article

        2 - Effect of application of sulfur and thiobacillus on improvement of morpho-physiological characteristics of wheat (Triticum aestivum L.) in Khuzestan lands
        Fatemeh Mousavi Seyed Keyvan Marashi Timour Babaei Nejad
        In order to investigate the effect of acid modifiers in lands with high pH on improving morpho-physiological characteristics of wheat, a factorial experiment was conducted in a randomized complete block design with three replications. The factors included, sulfur sulfat More
        In order to investigate the effect of acid modifiers in lands with high pH on improving morpho-physiological characteristics of wheat, a factorial experiment was conducted in a randomized complete block design with three replications. The factors included, sulfur sulfate in three levels (0, 250 and 500 kg ha-1) and thiobacillus in three levels (0, 5 and 10 kg ha-1). The results showed that the effect of sulfur fertilizer and thiobacillus bacteria on total dry weight, leaf area index, crop growth rate, net assimilation  rate and plant height were significant at 1% probability level. The interaction between sulfur and thiobacillus fertilizers on total dry weight was significant at 1% probability level and on plant height at 5% probability level and was not significant for other traits. The maximum crop growth rate were obtained by 12.5 and 11.6 g m-2 under 500 kg ha-1 sulfur fertilizer and 10 kg ha-1 thiobacillus, respectively and the minimum by 9.7 and 10.6 were under non-application of sulfur fertilizer and non-application of thiobacillus. The maximum plant height (94.3 cm) was observed under application of 500 and 10 kg ha-1 of sulfur and thiobacillus fertilizer and the minimum by 74.6 was under non-application of sulfur fertilizer and thiobacillus. In general, the results of experiment showed that the application of sulfur fertilizer and thiobacillus bacteria in lands with high pH improved morpho-physiological characteristics of wheat, which could be interest to researchers and farmers. Manuscript profile
      • Open Access Article

        3 - Effect of potassium nano-chelate and ascorbic acid on grain yield and some qualitative characteristics of cowpea (Vigna unguiculata L., Kamran cultivar)
        Sara Barat Zadeh Tayeb Saki Nejad2* Teymour Babaei Nejad
        In order to investigate the effect of potassium nano chelate and ascorbic acid on acid yield and some qualitative characteristics of cowpea seed, a factorial experiment was conducted in a randomized complete block design with three replications was carried out at the Sh More
        In order to investigate the effect of potassium nano chelate and ascorbic acid on acid yield and some qualitative characteristics of cowpea seed, a factorial experiment was conducted in a randomized complete block design with three replications was carried out at the Shahid Salemi Research Farm in Ahvaz. Factors included different amounts of potassium nano fertilizer at three levels (0, 2 and 4 liters per hectare), and levels of ascorbic acid (0, 15 and 30 mM). Results showed that there was significant difference at 1% probability level between potassium nano fertilizer and ascorbic acid in number of pods per plant, number of seeds per pod, 1000 seed weight, grain yield, biological yield, harvest index, protein percentage and potassium percentage. Among the measured traits, only interaction of potassium nano chelates and ascorbic acid on harvest index was significant at five percent. The highest harvest index was obtained with four liters per hectare potassium nano chelate and sprays application with 30 mM ascorbic acid with 39.68% and the lowest harvest index with 24.03% non-foliar treatment. The highest grain yield was obtained using 4 liters.ha-1 of potassium nano fertilizer and 30 mM ascorbic acid, respectively, with 3640 and 3183 kg.ha-1, and the lowest grain yield was obtained by control. The highest protein percentage was obtained by spraying with 4 liters.ha-1 of potassium nano fertilizer and 30 mM ascorbic acid, respectively, with 22.02 and 23.57 percent, respectively, and the lowest one was in control. In general, according to the results spraying with 4 liters.ha-1 of potassium nano fertilizer and 30 mM of ascorbic acid increases the quantitative and qualitative yields. Manuscript profile