Thickness-stiffness trade-off improves lodging resistance in rice

Tsugawa, Satoru; Shima, Hiroyuki; Ishimoto, Yukitaka; Ishikawa, Kazuya

doi:10.1038/s41598-023-37992-3

Cited by 4 publications

(1 citation statement)

References 39 publications

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“…The synergistic effects led to significant increases in both root growth and tiller numbers, creating favorable conditions to prevent lodging. This optimal plant structure enhances stability and resilience against extreme weather events such as heavy rainfall and intense winds, contributing to increased harvestable yield and overall grain quality [123][124][125][126][127][128]. Thus, this study demonstrates the harmonious working of these combined agricultural practices, enhancing the structural integrity of rice plants and ultimately contributing to more robust and stable crop yields.…”

Section: Synergetic Effects On Rice Growth and Yieldmentioning

confidence: 73%

Utilization of Rhodopseudomonas palustris in Crop Rotation Practice Boosts Rice Productivity and Soil Nutrient Dynamics

Sundar,

Yen,

Chang

et al. 2024

Agriculture

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Using beneficial microorganisms, such as purple non-sulfur bacteria (PNSB), has shown enormous potential for improving plant growth and agricultural production. However, the full extent of their benefits and interactions with agricultural practices is yet to be fully understood. The present study aimed to investigate the use of PNSB in crop rotation practice, focusing on its impact on rice growth and yield. The experiment was conducted over two rice cropping seasons, with djulis grown between the rice as a rotation crop. The study shows that PNSB treatment increased the concentration of 5-aminolevulinic acid (5-ALA) in plants, indicating enhanced photosynthesis. Moreover, when combined with crop rotation, PNSB remarkably improved soil fertility. These combined benefits resulted in substantial increases in tiller numbers (163%), leaf chlorophyll content (13%), and lodging resistance (66%), compared to the untreated plants. The combined treatment also resulted in higher productive tillers per hill (112%), average grain per hill (65%), and grain fertility (26%). This led to increased grain yield (65%), shoot dry weight (15%), and harvest index (37%). The findings clearly suggest that the incorporation of PNSB in crop rotation strategies can significantly augment the growth and yield of rice crops. These insights, pivotal for sustainable rice cultivation, hold the potential to simultaneously tackle the pressing issues of global food security and climate change.

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Section: Synergetic Effects On Rice Growth and Yieldmentioning

confidence: 73%

Utilization of Rhodopseudomonas palustris in Crop Rotation Practice Boosts Rice Productivity and Soil Nutrient Dynamics

Sundar,

Yen,

Chang

et al. 2024

Agriculture

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Mechanical instability of heavy column with rotational spring

Kanahama,

Chalermsin,

Sato

2023

Journal of Mechanics

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In previous research on the mechanical instability of trees based on mechanical theory, wild tree has been modeled as a cantilever which was perfectly attached to the ground. However, experimental research has identified two failure modes, including root turnover and self-buckling of the trunk. This suggests that the imperfect fixation caused by root-soil interaction must be considered when discussing tree stability. The purpose of this study is to clarify the self-buckling characteristics of wild trees considering soil instability. To account for the resistance moment caused by the interaction between the root and soil, trees as cantilevers fixed to the ground by a rotational spring were modeled. In this model, the self-buckling problem was formulated considering the rotational rigidity of the spring, and the formula derived for the critical height and buckling mode. As a result, the formula for critical height considering rotational rigidity was obtained, and it was found that the buckling modes can be classified into the rigid-body mode and beam mode based on the rotational rigidity. By comparing this result with the statistical law based on the measurement of real trees reported in previous research, it was determined that real trees were designed based on beam mode. This suggests that the wild tree skillfully balances the moment of resistance caused by the interaction between the root and soil to prevent “uprooting,” which is extremely fatal for trees. Moreover, it was also found that the safety factor of trees for self-buckling is ensured enough to prevent the beam mode.

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Unraveling the Novel Synergistic Effects of Crop Rotation and Rhodopseudomonas palustris Inoculation on Rice Productivity and Soil Nutrient Dynamics

Sundar,

Yen,

Chang

et al. 2023

Preprint

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Background and Aim The use of beneficial bacteria, such as purple non-sulfur bacteria (PNSB), has shown great potential for improving plant growth and agricultural production. However, the full extent of their benefits and interaction with agricultural practices is yet to be fully understood. The present study aimed to investigate the synergistic effects of PNSB and crop rotation on rice growth and yield in a field setting and to explore the underlying plant and soil mechanisms by which these practices can benefit farming systems. Methods The experiment was conducted over two rice cropping seasons, with djulis grown between the rice crops as a rotation crop. Data on the growth and yield of rice was collected and statistically analyzed using a one-way analysis of variance (ANOVA) and Duncan's multiple range test. Results The study demonstrates that PNSB treatment significantly increased the concentration of 5-aminolevulinic acid (5-ALA) in plants, indicating enhanced photosynthesis. Moreover, when combined with crop rotation, PNSB remarkably improved soil fertility. These combined benefits resulted in substantial increases in tiller numbers (163%), leaf chlorophyll content (13%), and lodging resistance (66%) compared to the control. The combined treatment also resulted in higher productive tillers per hill (98%), average grain per hill (106%), and grain fertility (37%). This led to increased grain yield (104%), shoot dry weight (28%), and harvest index (54%). Conclusion Our study indicates that a combined approach of PNSB inoculation and crop rotation can effectively enhance the growth and yield of rice plants. These findings have significant implications for sustainable rice production and could potentially contribute to addressing global food security challenges. Improving plant growth and yield could help meet the increasing demand for rice in the face of a growing global population.

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Thickness-stiffness trade-off improves lodging resistance in rice

Cited by 4 publications

References 39 publications

Utilization of Rhodopseudomonas palustris in Crop Rotation Practice Boosts Rice Productivity and Soil Nutrient Dynamics

Utilization of Rhodopseudomonas palustris in Crop Rotation Practice Boosts Rice Productivity and Soil Nutrient Dynamics

Mechanical instability of heavy column with rotational spring

Unraveling the Novel Synergistic Effects of Crop Rotation and Rhodopseudomonas palustris Inoculation on Rice Productivity and Soil Nutrient Dynamics

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