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Effect of planting density and application of diammonium phosphate and humic acid on some characteristics of sweet corn stalk and cob in Behbahan
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Esmaeil Namazi *   , Farhad Farahvash , Seyed Ata Siadat , Varahram Rashidi , Ebrahim Khalilvand behroozyar |
| University Azad Tabriz |
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Abstract: (199 Views) |
In order to investigate the effect of planting density and the use of diammonium phosphate and humic acid on some characteristics of sweet corn stalks and cobs, a factorial experiment was conducted in the form of a randomized complete block design with three replications in the crop year of 2017-2018 in Behbahan city. The investigated treatments include the application of diammonium phosphate at four levels of zero, 55, 100 and 200 kg/ha and the combined application of 2 kg/ha of humic acid with three levels of 55, 100 and 200 kg/ha of diammonium phosphate and plant density at three levels of 5/ 6, 9.5 and 12.5 plants per square meter. In this study, quantitative traits such as the number of nodes per stem, average dry weight of leaves per plant, dry weight of stem and height of stem and qualitative trait of seed protein percentage were measured. The results showed that the interaction effect of planting density and fertilizer consumption on the trait of stem diameter was insignificant, and on the traits of the number of nodes and the total number of leaves, it was significant at the 5% probability level, and on the other measured traits at the 1% probability level. Also, the effect of plant density on all studied traits was significant. In addition, the effect of fertilizer on the number of nodes was not significant, but it was significant on other traits measured in sweet corn plants at the probability level of 1%. The average comparison results showed that the number of nodes per stem was not different in the treatments with zero fertilizer levels (control) along with planting densities of 6.5, 9.5 and 12.5 plants per square meter (8 nodes).
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| Keywords: planting density, Function, diammonium phosphate, humic acid, sweet corn |
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Full-Text [PDF 655 kb]
(125 Downloads)
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Type of Study: Research |
Subject:
Crop Physiology
Received: 2024/01/27 | Accepted: 2024/07/10 | Published: 2025/08/1
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