DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes
Improvements in nitrogen (N) use efficiency reduce stress on the environment and improve tomato production. A two-year trial was conducted in greenhouse tomatoes with a split-plot design, in which one factor was the N application rate (150 kg·ha<sup>−1</sup>, N1; 200 kg·ha<sup>−1&l...
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MDPI AG
2022-05-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/8/6/472 |
| _version_ | 1797486856076525568 |
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| author | Kunkun Nie Qingjun Bai Chao Chen Mingzhi Zhang Yuan Li |
| author_facet | Kunkun Nie Qingjun Bai Chao Chen Mingzhi Zhang Yuan Li |
| author_sort | Kunkun Nie |
| collection | DOAJ |
| description | Improvements in nitrogen (N) use efficiency reduce stress on the environment and improve tomato production. A two-year trial was conducted in greenhouse tomatoes with a split-plot design, in which one factor was the N application rate (150 kg·ha<sup>−1</sup>, N1; 200 kg·ha<sup>−1</sup>, N2; and 250 kg·ha<sup>−1</sup>, N3) and two other factors were the type of urea applied (urea, T1; slow-release (polymer-coated) urea, T2, and nitrification inhibitors (3,4-dimethylpyrazole phosphate, DMPP) + urea, T3); no N fertilizer was applied in the control. The effects of the nitrogen (N) application rate and type of urea applied on the root morphology indexes, growth indexes, photosynthetic parameters, yield (Y), water use efficiency (WUE), and nitrogen agronomic efficiency (NAE) of greenhouse tomatoes were investigated. The results show that an appropriate N application rate (200 kg·ha<sup>−1</sup>) can improve tomato growth and net photosynthetic rate (P<sub>n</sub>). With T3, the Y and WUE of greenhouse tomatoes first increased and then decreased as the N application rate increased, but with T1 and T2, the Y and WUE increased as the N application rate increased. The NAE of greenhouse tomatoes was significantly lower with N3 than with N2. The root growth, plant growth, P<sub>n</sub>, Y, WUE, and NAE of the tomatoes were improved with T2 and T3 compared to T1. These findings can be used to promote N conservation and increase the Y of facility agriculture crops. |
| first_indexed | 2024-03-09T23:39:14Z |
| format | Article |
| id | doaj.art-afc99f3eb1e8479cbff02e82265eb398 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T23:39:14Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-afc99f3eb1e8479cbff02e82265eb3982023-11-23T16:54:46ZengMDPI AGHorticulturae2311-75242022-05-018647210.3390/horticulturae8060472DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse TomatoesKunkun Nie0Qingjun Bai1Chao Chen2Mingzhi Zhang3Yuan Li4State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, ChinaNorthwest Land and Resources Research Center, Shaanxi Normal University, Xi’an 710119, ChinaImprovements in nitrogen (N) use efficiency reduce stress on the environment and improve tomato production. A two-year trial was conducted in greenhouse tomatoes with a split-plot design, in which one factor was the N application rate (150 kg·ha<sup>−1</sup>, N1; 200 kg·ha<sup>−1</sup>, N2; and 250 kg·ha<sup>−1</sup>, N3) and two other factors were the type of urea applied (urea, T1; slow-release (polymer-coated) urea, T2, and nitrification inhibitors (3,4-dimethylpyrazole phosphate, DMPP) + urea, T3); no N fertilizer was applied in the control. The effects of the nitrogen (N) application rate and type of urea applied on the root morphology indexes, growth indexes, photosynthetic parameters, yield (Y), water use efficiency (WUE), and nitrogen agronomic efficiency (NAE) of greenhouse tomatoes were investigated. The results show that an appropriate N application rate (200 kg·ha<sup>−1</sup>) can improve tomato growth and net photosynthetic rate (P<sub>n</sub>). With T3, the Y and WUE of greenhouse tomatoes first increased and then decreased as the N application rate increased, but with T1 and T2, the Y and WUE increased as the N application rate increased. The NAE of greenhouse tomatoes was significantly lower with N3 than with N2. The root growth, plant growth, P<sub>n</sub>, Y, WUE, and NAE of the tomatoes were improved with T2 and T3 compared to T1. These findings can be used to promote N conservation and increase the Y of facility agriculture crops.https://www.mdpi.com/2311-7524/8/6/472facility agriculturenitrogen application rateroots morphology indexurea typeyield |
| spellingShingle | Kunkun Nie Qingjun Bai Chao Chen Mingzhi Zhang Yuan Li DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes Horticulturae facility agriculture nitrogen application rate roots morphology index urea type yield |
| title | DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes |
| title_full | DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes |
| title_fullStr | DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes |
| title_full_unstemmed | DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes |
| title_short | DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes |
| title_sort | dmpp and polymer coated urea promoted growth and increased yield of greenhouse tomatoes |
| topic | facility agriculture nitrogen application rate roots morphology index urea type yield |
| url | https://www.mdpi.com/2311-7524/8/6/472 |
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