Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton
Soil alkali-hydrolyzable nitrogen, which is sensitive to N fertilization rate, is one of the indicators of soil nitrogen supplying capacity. Two field experiments were conducted in Dongtai (120°19″ E, 32°52″ N), Jiangsu, China in 2009 and Dafeng (120°28″ E, 33°12″ N), Jiangsu province, China in 2010...
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KeAi Communications Co., Ltd.
2016-08-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514116300447 |
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| author | Binglin Chen Hongkun Yang Weichao Song Chunyu Liu Jiao Xu Wenqing Zhao Zhiguo Zhou |
| author_facet | Binglin Chen Hongkun Yang Weichao Song Chunyu Liu Jiao Xu Wenqing Zhao Zhiguo Zhou |
| author_sort | Binglin Chen |
| collection | DOAJ |
| description | Soil alkali-hydrolyzable nitrogen, which is sensitive to N fertilization rate, is one of the indicators of soil nitrogen supplying capacity. Two field experiments were conducted in Dongtai (120°19″ E, 32°52″ N), Jiangsu, China in 2009 and Dafeng (120°28″ E, 33°12″ N), Jiangsu province, China in 2010. Six nitrogen rates (0, 150, 300, 375, 450, and 600 kg ha−1) were used to study the effect of N fertilization rate on soil alkali-hydrolyzable nitrogen content (SAHNC), subtending leaf nitrogen concentration (SLNC), yield, and fiber quality. In both Dongtai and Dafeng experiment station, the highest yield (1709 kg ha−1), best quality (fiber length 30.6 mm, fiber strength 31.6 cN tex−1, micronaire 4.82), and highest N agronomic efficiency (2.03 kg kg−1) were achieved at the nitrogen fertilization rate of 375 kg ha−1. The dynamics of SAHNC and SLNC could be simulated with a cubic and an exponential function, respectively. The changes in SAHNC were consistent with the changes in SLNC. Optimal average rate (0.276 mg day−1) and duration (51.8 days) of SAHNC rapid decline were similar to the values obtained at the nitrogen rate of 375 kg ha−1 at which cotton showed highest fiber yield, quality, and N agronomic efficiency. Thus, the levels and strategies of nitrogen fertilization can affect SAHNC dynamics. The N fertilization rate that optimizes soil alkali-hydrolyzable nitrogen content would optimize the subtending leaf nitrogen concentration and thereby increase the yield and quality of the cotton fiber. |
| first_indexed | 2024-12-19T23:44:34Z |
| format | Article |
| id | doaj.art-c3c10af000bf4c4f982c47177dd80583 |
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| issn | 2214-5141 |
| language | English |
| last_indexed | 2024-12-19T23:44:34Z |
| publishDate | 2016-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-c3c10af000bf4c4f982c47177dd805832022-12-21T20:01:20ZengKeAi Communications Co., Ltd.Crop Journal2214-51412016-08-014432333010.1016/j.cj.2016.03.006Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cottonBinglin ChenHongkun YangWeichao SongChunyu LiuJiao XuWenqing ZhaoZhiguo ZhouSoil alkali-hydrolyzable nitrogen, which is sensitive to N fertilization rate, is one of the indicators of soil nitrogen supplying capacity. Two field experiments were conducted in Dongtai (120°19″ E, 32°52″ N), Jiangsu, China in 2009 and Dafeng (120°28″ E, 33°12″ N), Jiangsu province, China in 2010. Six nitrogen rates (0, 150, 300, 375, 450, and 600 kg ha−1) were used to study the effect of N fertilization rate on soil alkali-hydrolyzable nitrogen content (SAHNC), subtending leaf nitrogen concentration (SLNC), yield, and fiber quality. In both Dongtai and Dafeng experiment station, the highest yield (1709 kg ha−1), best quality (fiber length 30.6 mm, fiber strength 31.6 cN tex−1, micronaire 4.82), and highest N agronomic efficiency (2.03 kg kg−1) were achieved at the nitrogen fertilization rate of 375 kg ha−1. The dynamics of SAHNC and SLNC could be simulated with a cubic and an exponential function, respectively. The changes in SAHNC were consistent with the changes in SLNC. Optimal average rate (0.276 mg day−1) and duration (51.8 days) of SAHNC rapid decline were similar to the values obtained at the nitrogen rate of 375 kg ha−1 at which cotton showed highest fiber yield, quality, and N agronomic efficiency. Thus, the levels and strategies of nitrogen fertilization can affect SAHNC dynamics. The N fertilization rate that optimizes soil alkali-hydrolyzable nitrogen content would optimize the subtending leaf nitrogen concentration and thereby increase the yield and quality of the cotton fiber.http://www.sciencedirect.com/science/article/pii/S2214514116300447Cotton (Gossypium hirsutum L.)Soil alkali-hydrolyzable nitrogenSubtending leaf nitrogen concentrationFiber yieldFiber propertiesNitrogen use efficiency |
| spellingShingle | Binglin Chen Hongkun Yang Weichao Song Chunyu Liu Jiao Xu Wenqing Zhao Zhiguo Zhou Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton Crop Journal Cotton (Gossypium hirsutum L.) Soil alkali-hydrolyzable nitrogen Subtending leaf nitrogen concentration Fiber yield Fiber properties Nitrogen use efficiency |
| title | Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton |
| title_full | Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton |
| title_fullStr | Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton |
| title_full_unstemmed | Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton |
| title_short | Effect of N fertilization rate on soil alkali-hydrolyzable N, subtending leaf N concentration, fiber yield, and quality of cotton |
| title_sort | effect of n fertilization rate on soil alkali hydrolyzable n subtending leaf n concentration fiber yield and quality of cotton |
| topic | Cotton (Gossypium hirsutum L.) Soil alkali-hydrolyzable nitrogen Subtending leaf nitrogen concentration Fiber yield Fiber properties Nitrogen use efficiency |
| url | http://www.sciencedirect.com/science/article/pii/S2214514116300447 |
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