zahra ajribzadeh; salim farzaneh; Mahmoud Shomili; Hamid Reza Balouchi; aziz Ker Mullah Chaab; Raouf Seyed Sharifi
Abstract
Objective: Considering the high consumption of cuttings in sugarcane cultivation and the rapid deterioration of cuttings, crop management methods after harvesting are necessary. The present study aimed to determine the appropriate coverage for a single sugarcane bud.Methods: This study was performed ...
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Objective: Considering the high consumption of cuttings in sugarcane cultivation and the rapid deterioration of cuttings, crop management methods after harvesting are necessary. The present study aimed to determine the appropriate coverage for a single sugarcane bud.Methods: This study was performed as a completely randomized design with three replications in 2020, to investigate the effect of four types of binders: carboxymethylcellulose (40, 60 and 80 g/l), arabic gum (50, 100 and 150 g/l), tragacanth (30, 60 and 90 g/l) and starch (45, 60 and 75 g/l) as the first test and four types of nutrients: humic acid (6, 9 and 12 g/l), filter cake (5, 10 and 15 g/kg), superabsorbent (10, 30 and 45 g/kg) and microcombi fertilizer (10, 20 and 30 g/kg) as the second experiment with control, in the greenhouse of the sugarcane research Station-Khuzestan.Results: The results showed that the effect of four types of binder on sugarcane plant characteristics such as germination rate, stalk length, stem dry weight and plant moisture content was significant and the most positive effect was observed in starch gum (60 g/l). Also, four nutrients had a significant effect on some characteristics such as germination rate, stalk length, stalk dry weight and plant moisture content.Conclusion: Due to the most positive effect of starch gum, in later studies, this glue can be used as a binder, along with other nutrients and fillers for planting lateral buds of sugarcane stalks.
Ladan Ghorbani; Amin Salehi; Mohsen Movahhdi Dehnavi; Hamidreza Balouchi; Parvin Rostampour
Abstract
Objective: The effects of mycorrhizal and Plant-growth promoting rhizobacteria on some characteristics of milk thistle in different irrigation regimes was investigated.Methods: The experiment was conducted as a factorial based on completely randomized design in 3 replications at the research greenhouse ...
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Objective: The effects of mycorrhizal and Plant-growth promoting rhizobacteria on some characteristics of milk thistle in different irrigation regimes was investigated.Methods: The experiment was conducted as a factorial based on completely randomized design in 3 replications at the research greenhouse of Yasouj University in 2014-2015. The first factor included drought stress at 3 levels (irrigation after 20, 50 and 80% soil moisture depletion), and the second factor was biological fertilizer at 4 levels (control, mycorrhizal (Funneliformis moseae), bacteria (Bacillus subtilis) and mycorrhizal+bacillus.Results: The effect of irrigation regime and biofertilizer was significant on all traits, but the interaction of the factors was only significant on soluble sugar. The highest amount of nitrogen (23.58 mg.g-1), phosphorus (22.76 mg.g-1), protein (50.69 mg.g-1 leaf fresh weight), relative moisture content (70.20 %) and shoot dry weight (19.78 g) was obtained from irrigation after 20% moisture depletion from the soil and the highest amount of potassium (10.08 mg.g-1), proline (9.79 mg.g-1 leaf fresh weight) was obtained from irrigation after 80% moisture depletion. Among the fertilizer regimens, the highest amount of these traits, especially the shoot dry weight (21.71g), was obtained from the combination of mycorrhizal and bacterial biofertilizers. The highest amount of soluble sugar in stress levels was obtained from the integrated treatment of biofertilizers.Conclusion: Increase in the ability of milk thistle to absorb water and soil nutrients using biological fertilizers, and the effect of these nutrients in increasing the photosynthetic capacity and improving growth, has helped this plant to tolerate drought conditions.
Raheleh Arab; Alireza Yadavi; Hamidreza Balouchi; Hamid Alahdadii
Abstract
Objective: This experiment was conducted to investigate the effects of drought stress and foliar application of Fe and Zn on agronomical characteristics of sunflowerMethods: a farm experiment was carried out in the Fars agricultural research center in the split plots form base on a randomized complete ...
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Objective: This experiment was conducted to investigate the effects of drought stress and foliar application of Fe and Zn on agronomical characteristics of sunflowerMethods: a farm experiment was carried out in the Fars agricultural research center in the split plots form base on a randomized complete block design with three replications during 2014. Irrigation at three levels (irrigation after 60, 120, and 180 mm of evaporation from A class evaporation pan) as the main plots and foliar application at four levels (water, iron sulfate, zinc sulfate, and iron sulfate+ zinc sulfate) were used as sub-plots.Results: The results showed that the delay in irrigation from 60 to 180 mm of evaporation caused a decrease in the number of seeds per head, grain yield and biological yield by 24.8%, 37.5% and 30%, respectively. The foliar application of iron sulfate + zinc sulfate compared to the control treatment increased the number of seeds per head, 1000-seed weight and grain yield by 24.1%, 16.6 percent and 14.3 percent, respectively. The delay in irrigation, increased the water use efficiency by 50.9%. The interaction between irrigation and foliar application had a significant effect on leaf and grain iron concentration and leaf zinc concentration, so that with delay in irrigation, absorption of nutrients decreased, but foliar application under drought stress conditions increased iron and zinc absorption in sunflowerConclusion: According to these results, it can be stated that with micronutrient foliar spraying, the severe drop in sunflower yield can be prevented under drought stress conditions