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Investigation of quantitative and qualitative changes in durum wheat yield with the application of nitrogen and zinc fertilizers under different irrigation levels
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Alireza Mirsaleh Mahabadi   , Shahram Rezvan * , Ali Damavandi |
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Abstract: (3034 Views) |
| Water shortage, nitrogen fertilizer and zinc deficiency are important factors affecting quantitative and qualitative of wheat. This study was conducted as a split-factorial experiment based on randomized complete block design with four replications in 2017-18 with nitrogen in three levels 40, 80, and 160 kg/ha and application and non-application of zinc under normal irrigation, irrigation up to complete flowering and stem elongation were applied. Irrigation up to stem elongation resulted in a significant decrease in 1000-grain weight (11.24%) compared to the control treatment. Foliar application of zinc fertilizer showed a 4.24% increase in 1000-grain weight compared to the control treatment. The most prominent result was the simultaneous application of 80 kg N/ha and Zn fertilizer under irrigation up to stem elongation, which resulted in 43.6% increase in grain yield compared to irrigation up to flowering. Irrigation up to stem elongation compared to normal irrigation resulted in a 28% increase in the average grain protein. The application of 40 and 80 kg N/ha compared to the treatment of 160 kg/ha led to more adsorption of zinc in plant organs. In general, the co-application of zinc and nitrogen fertilizers (80 kg/ha) under irrigation up to stem elongation treatment led to the modification of the negative effects of water shortage. The co-application of zinc and nitrogen fertilizer (80 kg/ha) under irrigation up to stem elongation conditions is recommended for Mahabad region of Isfahan province. |
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| Keywords: Seed protein, Number of seeds, Seed zinc content and Foliar application. |
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Full-Text [PDF 1171 kb]
(3190 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2020/06/1 | Accepted: 2020/06/1 | Published: 2020/06/1
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