Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content
In order to investigate the effect of planting densities and different amounts of nitrogen on leaf greenness index and leaf area index, seed yield and oil yield, irrigation water productivity and nitrogen use efficiency in sunflower, an experiment was conducted as a split plot in the form of randomi...
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Islamic Azad University, Tabriz Branch
2024-04-01
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| Series: | Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī |
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| Online Access: | https://sanad.iau.ir/journal/jcep/Article/1106677 |
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| author | Morteza Motamed Shahram Rezvan Zarin Taj Alipour Ghanbar Laie جعفرمسعود سینکی |
| author_facet | Morteza Motamed Shahram Rezvan Zarin Taj Alipour Ghanbar Laie جعفرمسعود سینکی |
| author_sort | Morteza Motamed |
| collection | DOAJ |
| description | In order to investigate the effect of planting densities and different amounts of nitrogen on leaf greenness index and leaf area index, seed yield and oil yield, irrigation water productivity and nitrogen use efficiency in sunflower, an experiment was conducted as a split plot in the form of randomized complete blocks design with three replications in the research farm of Agriculture Institute in Semnan province in the spring of 2019. Plant density in four levels (4, 6, 8 and 10 plants per m2) as a main plot and the amount of nitrogen levels (0. 50, 100, 150 and 200 kg urea ha-1) as sub plot was considered. Leaf greenness index, plant height, 100-seed weight, seed nitrogen content and seed oil content were significantly affected by the simple effect of planting density, which decreased with increasing density of the above traits. Also, the nitrogen levels significantly affected the studied traits, so that with increasing the amount of nitrogen consumption, from control (0 kg urea ha-1) to 200 kg urea ha-1, the leaf greenness index increased by 15.3%. The highest amount of plant height, 100-seed weight and grain nitrogen were obtained in the treatment of 150 kg urea ha-1 and 14.13, 9.07 and 24.3% more than no application, respectively. Mean comparing the results of water use efficiency showed that at a density of four plants per m2 and an increase in nitrogen levels, along with increasing height and leaf area index, water use efficiency also increased, but higher levels of density led to smaller plant yield, less plant biomass and water efficiency were reduced. The highest nitrogen use efficiency was obtained in the density of 8 plants per m2 and no application of nitrogen fertilizer. Finally, maximum grain yield (4016 kg.ha-1) and oil yield (1827 kg.ha-1) were obtained by consuming 150 kg urea per ha-1 and density of 8 plants per m2. |
| format | Article |
| id | doaj-art-211529ecd2974142a6ada4839a5312fa |
| institution | Kabale University |
| issn | 2538-1822 2476-731X |
| language | fas |
| publishDate | 2024-04-01 |
| publisher | Islamic Azad University, Tabriz Branch |
| record_format | Article |
| series | Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī |
| spelling | doaj-art-211529ecd2974142a6ada4839a5312fa2024-12-03T12:14:34ZfasIslamic Azad University, Tabriz BranchIkufīziyuluzhī-i Giyāhān-i Zirā̒ī2538-18222476-731X2024-04-011767315332Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen ContentMorteza Motamed0Shahram Rezvan1Zarin Taj Alipour2Ghanbar Laie3جعفرمسعود سینکی4Department of Agriculture, Damghan Branch, Islamic Azad University, Damghan, IranDepartment of Agriculture, Production and Technology of Herbal Medicines Research Center, Damghan Branch, Islamic Azad University, DamghanDepartment of Agriculture, Production and Technology of Herbal Medicines Research Center, Damghan Branch, Islamic Azad University, Damghan,Department of Agriculture, Strategic Crops and Garden Research Center, Damghan Branch, Islamic Azad University, Damghan,گروه کشاورزی, دانشگاه آزاداسلامی واحد دامغان، دامغان, ایرانIn order to investigate the effect of planting densities and different amounts of nitrogen on leaf greenness index and leaf area index, seed yield and oil yield, irrigation water productivity and nitrogen use efficiency in sunflower, an experiment was conducted as a split plot in the form of randomized complete blocks design with three replications in the research farm of Agriculture Institute in Semnan province in the spring of 2019. Plant density in four levels (4, 6, 8 and 10 plants per m2) as a main plot and the amount of nitrogen levels (0. 50, 100, 150 and 200 kg urea ha-1) as sub plot was considered. Leaf greenness index, plant height, 100-seed weight, seed nitrogen content and seed oil content were significantly affected by the simple effect of planting density, which decreased with increasing density of the above traits. Also, the nitrogen levels significantly affected the studied traits, so that with increasing the amount of nitrogen consumption, from control (0 kg urea ha-1) to 200 kg urea ha-1, the leaf greenness index increased by 15.3%. The highest amount of plant height, 100-seed weight and grain nitrogen were obtained in the treatment of 150 kg urea ha-1 and 14.13, 9.07 and 24.3% more than no application, respectively. Mean comparing the results of water use efficiency showed that at a density of four plants per m2 and an increase in nitrogen levels, along with increasing height and leaf area index, water use efficiency also increased, but higher levels of density led to smaller plant yield, less plant biomass and water efficiency were reduced. The highest nitrogen use efficiency was obtained in the density of 8 plants per m2 and no application of nitrogen fertilizer. Finally, maximum grain yield (4016 kg.ha-1) and oil yield (1827 kg.ha-1) were obtained by consuming 150 kg urea per ha-1 and density of 8 plants per m2.https://sanad.iau.ir/journal/jcep/Article/1106677oil yield plant density seed nitrogen urea |
| spellingShingle | Morteza Motamed Shahram Rezvan Zarin Taj Alipour Ghanbar Laie جعفرمسعود سینکی Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī oil yield plant density seed nitrogen urea |
| title | Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content |
| title_full | Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content |
| title_fullStr | Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content |
| title_full_unstemmed | Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content |
| title_short | Evaluation of Growth, Yield, Oil Content, Irrigation Water Productivity and Nitrogen Use Efficiency of Sunflower (Helianthus annuus L.) at Different Levels of Plant Density and Nitrogen Content |
| title_sort | evaluation of growth yield oil content irrigation water productivity and nitrogen use efficiency of sunflower helianthus annuus l at different levels of plant density and nitrogen content |
| topic | oil yield plant density seed nitrogen urea |
| url | https://sanad.iau.ir/journal/jcep/Article/1106677 |
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