Effect of Timing of N Fertilizer and PGR on N Uptake and Utilization in Wheat
The effect of timing of N fertilizer and plant growth regulators (PGRs) on N uptake and utilization in wheat plants was studied. It was shown that both N and PGRs applications had significant effect on plant N content, accumulation and utilization. Treatments involving S<sub>3307</sub> h...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2000-03-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2000.02.0159 |
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| Summary: | The effect of timing of N fertilizer and plant growth regulators (PGRs) on N uptake and utilization in wheat plants was studied. It was shown that both N and PGRs applications had significant effect on plant N content, accumulation and utilization. Treatments involving S<sub>3307</sub> had higher N content than the untreated ones. GA3 treated plants contained higher N compared to S<sub>3307</sub> or control. The combined treatment of S3307 and GA3 contained higher N in all growth stages. There were genotypic differences in N content with Yangmei 5 having higher N content at booting in leaf and stem, but the results were opposite at maturity. S<sub>3307</sub> reduced N accumulation by inhibiting dry matter production, while GA3 increased N accumulation and modified the inhibiting action of S3307. Differences also existed in terms of Nitrogen utilization efficiency (NUE) and Nitrogen efficiency ratio (NER) between cultivars and among PGR treatments. Yangmei 5 had higher NUE and NER than ZAU 941. The combined treatment had significantly higher NUE and NER than the S3307 or GA3 alone treated plants. |
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| ISSN: | 1008-9209 2097-5155 |