Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions
Nitrogen (N) is a highly essential macronutrient for plant root growth and grain yield (GY). To assess the relationship among N, root traits, and the yield of <i>boro</i> (dry season irrigated) rice, a pot experiment was performed in the Department of Agronomy, Bangladesh Agricultural Un...
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MDPI AG
2022-12-01
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| author | Md. Salahuddin Kaysar Uttam Kumer Sarker Sirajam Monira Md. Alamgir Hossain Uzzal Somaddar Gopal Saha S. S. Farhana Hossain Nadira Mokarroma Apurbo Kumar Chaki Md. Sultan Uddin Bhuiya Md. Romij Uddin |
| author_facet | Md. Salahuddin Kaysar Uttam Kumer Sarker Sirajam Monira Md. Alamgir Hossain Uzzal Somaddar Gopal Saha S. S. Farhana Hossain Nadira Mokarroma Apurbo Kumar Chaki Md. Sultan Uddin Bhuiya Md. Romij Uddin |
| author_sort | Md. Salahuddin Kaysar |
| collection | DOAJ |
| description | Nitrogen (N) is a highly essential macronutrient for plant root growth and grain yield (GY). To assess the relationship among N, root traits, and the yield of <i>boro</i> (dry season irrigated) rice, a pot experiment was performed in the Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh, during the <i>boro</i> rice season of 2020–2021. Three <i>boro</i> rice varieties, namely BRRI dhan29, Hira-2, and Binadhan-10, were planted at four N doses: 0 kg ha<sup>−1</sup> (N<sub>0</sub>), 70 kg ha<sup>−1</sup> (N<sub>70</sub>), 140 kg ha<sup>−1</sup> (N<sub>140</sub>), and 210 kg ha<sup>−1</sup> (N<sub>210</sub>). The experiment was conducted following a completely randomized design with three replicates. The varieties were evaluated for root number (RN), root length (RL), root volume (RV), root porosity (RP), leaf area index (LAI), total dry matter (TDM), and yield. The results indicated that the Binadhan-10, Hira-2, and BRRI dhan29 varieties produced better root characteristics under at the N<sub>140</sub> and N<sub>210</sub> levels. A substantial positive association was noticed between the grain yield and the root traits, except for root porosity. Based on the root traits and growth dynamics, Binadhan-10 performed the best at the N<sub>140</sub> level and produced the highest grain yield (26.96 g pot<sup>−1</sup>), followed by Hira-2 (26.35 g pot<sup>−1</sup>) and BRRI dhan29 (25.90 g pot<sup>−1</sup>). |
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| spelling | doaj.art-785287205a4b4b69b3814a358cc3d6d02023-11-24T16:12:43ZengMDPI AGLife2075-17292022-12-011212205110.3390/life12122051Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical ConditionsMd. Salahuddin Kaysar0Uttam Kumer Sarker1Sirajam Monira2Md. Alamgir Hossain3Uzzal Somaddar4Gopal Saha5S. S. Farhana Hossain6Nadira Mokarroma7Apurbo Kumar Chaki8Md. Sultan Uddin Bhuiya9Md. Romij Uddin10Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Crop Botany, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, BangladeshDepartment of Agronomy, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, BangladeshDepartment of Agricultural Extension, Khamarbari, Dhaka 1215, BangladeshPlant Physiology Division, Bangladesh Agricultural Research Institute, Gazipur 1701, BangladeshOn Farm Research Division, Bangladesh Agricultural Research Institute, Gazipur 1701, BangladeshDepartment of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BangladeshNitrogen (N) is a highly essential macronutrient for plant root growth and grain yield (GY). To assess the relationship among N, root traits, and the yield of <i>boro</i> (dry season irrigated) rice, a pot experiment was performed in the Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh, during the <i>boro</i> rice season of 2020–2021. Three <i>boro</i> rice varieties, namely BRRI dhan29, Hira-2, and Binadhan-10, were planted at four N doses: 0 kg ha<sup>−1</sup> (N<sub>0</sub>), 70 kg ha<sup>−1</sup> (N<sub>70</sub>), 140 kg ha<sup>−1</sup> (N<sub>140</sub>), and 210 kg ha<sup>−1</sup> (N<sub>210</sub>). The experiment was conducted following a completely randomized design with three replicates. The varieties were evaluated for root number (RN), root length (RL), root volume (RV), root porosity (RP), leaf area index (LAI), total dry matter (TDM), and yield. The results indicated that the Binadhan-10, Hira-2, and BRRI dhan29 varieties produced better root characteristics under at the N<sub>140</sub> and N<sub>210</sub> levels. A substantial positive association was noticed between the grain yield and the root traits, except for root porosity. Based on the root traits and growth dynamics, Binadhan-10 performed the best at the N<sub>140</sub> level and produced the highest grain yield (26.96 g pot<sup>−1</sup>), followed by Hira-2 (26.35 g pot<sup>−1</sup>) and BRRI dhan29 (25.90 g pot<sup>−1</sup>).https://www.mdpi.com/2075-1729/12/12/2051root lengthleaf area indexeffective tillerscorrelation matrixyield |
| spellingShingle | Md. Salahuddin Kaysar Uttam Kumer Sarker Sirajam Monira Md. Alamgir Hossain Uzzal Somaddar Gopal Saha S. S. Farhana Hossain Nadira Mokarroma Apurbo Kumar Chaki Md. Sultan Uddin Bhuiya Md. Romij Uddin Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions Life root length leaf area index effective tillers correlation matrix yield |
| title | Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions |
| title_full | Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions |
| title_fullStr | Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions |
| title_full_unstemmed | Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions |
| title_short | Optimum Nitrogen Application Acclimatizes Root Morpho-Physiological Traits and Yield Potential in Rice under Subtropical Conditions |
| title_sort | optimum nitrogen application acclimatizes root morpho physiological traits and yield potential in rice under subtropical conditions |
| topic | root length leaf area index effective tillers correlation matrix yield |
| url | https://www.mdpi.com/2075-1729/12/12/2051 |
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