The response of Hongda, a flue-cured tobacco cultivar, to nitrogen fertilizer rate

Nitrogen fertilizer is essential for the yield and quality of flue-cured tobacco. Honghuadajinyuan (i.e. Hongda) is a special flue-cured tobacco variety in Yunnan, which differs in nitrogen application rates from other varieties. In 2016 and 2017, different nitrogen application rates were establishe...

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Bibliographic Details
Published in:Archiv für Acker- und Pflanzenbau und Bodenkunde 2021-03, Vol.67 (4), p.536-550
Main Authors: Su, Jiaen, Chen, Yanjie, Zhu, Yanmei, Xiang, Jinglin, Chen, Yi, Hu, Binbin, Zhu, Mingliang, Xu, Anchuan, Li, Folin, Ren, Ke, Zou, Congming
Format: Article
Language:English
Subjects:
Abbreviations
Chemical indicators
Cultivars
Dry weight
economic value
Fertilizers
Nicotine
Nitrogen
quadratic model
residual nitrogen
Sensory evaluation
Soil analysis
Soil chemistry
Soil fertility
Soils
Tobacco
Tobacco quality
Weight
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Summary:Nitrogen fertilizer is essential for the yield and quality of flue-cured tobacco. Honghuadajinyuan (i.e. Hongda) is a special flue-cured tobacco variety in Yunnan, which differs in nitrogen application rates from other varieties. In 2016 and 2017, different nitrogen application rates were established in Yunnan to compare, with other varieties, Hongda's agronomic, economic, chemical indicators and soil residual nitrogen. As nitrogen fertilizer rate increased, the ratio of fresh weight to dry weight (RFD) and the proportions of inferior tobacco (PIT) initially decreased and then increased in contrast to the proportions of superior tobacco (PST) and average price. Total sugar and reducing sugar contents in flue-cured tobacco leaves decreased as nitrogen fertilizer rate increased, while total nitrogen, nicotine, and protein contents increased. The highest sensory evaluation scores were obtained with 45 and 60 kg N ha −1 . Soil nitrate contents increased with increasing nitrogen fertilizer rate and significantly increased when nitrogen application rate exceeded 60 kg N ha −1 . A quadratic model was suitable for Hongda's response to nitrogen fertilizer rate and 60 kg N ha −1 can meet the needs of the growth of this flue-cured tobacco variety. Abbreviations: Hongda: Honghuadajinyuan; RFD: ratio of fresh to dry weight; PIT: proportion of inferior tobacco; PMT: proportion of medium tobacco; PST: proportion of superior tobacco; SPAD: soil and plant analyzer development.
ISSN:0365-0340
1476-3567
DOI:10.1080/03650340.2020.1739658