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<p>Timely harvesting of canola grown on a large scale is crucial for <i>Brassica napus</i> L. production, and this is only practicable by machine harvesting. However, excessive plant height and prolonged and uneven seed ripening cause lodging and shattering, making mechanical harvesting of crops challenging and reducing <i>Brassica napus</i> yield. Mitigation strategies can enhance pod-shattering resistance by balancing the reproductive and vegetative phases of <i>Brassica napus</i> L. Adequate nitrogen input is essential for the proper growth and optimal production of <i>Brassica napus</i> L. However, excessive and insufficient applications of nitrogen fertilizer result in plant lodging, subsequently causing pod shattering. Mepiquat chloride controls growth by blocking gibberellin. This controls the crop canopy and lowers harvest losses caused by broken pods. Nitrogen and mepiquat chloride can be combined to optimize canola production by modifying the plant architecture desired for mechanical harvesting and reduced shattering without any yield penalty. The combined application of nitrogen and mepiquat chloride ensured that the plants received the right balance of nutrients and growth regulators at the same time. This review was considered to investigate the potential of the combined application of MC and nitrogen on the shattering and yield response of <i>Brassica napus</i> L. The pod can become stronger if the right amount of MC and N is applied at the right moment. This review concentrates on (i) the effects of mepiquat chloride and nitrogen treatment on the various crops that have been reported in recent years (ii) precise combination to limit gibberellin, compact canopy structure, and reduce shattering losses in <i>Brassica napus</i> L. </p>

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Optimizing nitrogen and mepiquat chloride application to reduce shattering losses and facilitate mechanical harvesting in Brassica napus L.; a comprehensive review

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月16日

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  • Muhammad Faizan Ali,
  • Laiba Mukhtar

摘要

Timely harvesting of canola grown on a large scale is crucial for Brassica napus L. production, and this is only practicable by machine harvesting. However, excessive plant height and prolonged and uneven seed ripening cause lodging and shattering, making mechanical harvesting of crops challenging and reducing Brassica napus yield. Mitigation strategies can enhance pod-shattering resistance by balancing the reproductive and vegetative phases of Brassica napus L. Adequate nitrogen input is essential for the proper growth and optimal production of Brassica napus L. However, excessive and insufficient applications of nitrogen fertilizer result in plant lodging, subsequently causing pod shattering. Mepiquat chloride controls growth by blocking gibberellin. This controls the crop canopy and lowers harvest losses caused by broken pods. Nitrogen and mepiquat chloride can be combined to optimize canola production by modifying the plant architecture desired for mechanical harvesting and reduced shattering without any yield penalty. The combined application of nitrogen and mepiquat chloride ensured that the plants received the right balance of nutrients and growth regulators at the same time. This review was considered to investigate the potential of the combined application of MC and nitrogen on the shattering and yield response of Brassica napus L. The pod can become stronger if the right amount of MC and N is applied at the right moment. This review concentrates on (i) the effects of mepiquat chloride and nitrogen treatment on the various crops that have been reported in recent years (ii) precise combination to limit gibberellin, compact canopy structure, and reduce shattering losses in Brassica napus L.