<b>Influence of seasonal weather on the growth and productivity of </b><b><i>Brachiaria humidicola</i></b>
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This study investigates the influence of seasonal climate variations on the growth and productivity of Brachiaria humidicola in Thua Thien Hue province (designated as Hue City from January 1, 2025), Vietnam. Field experiments assessed key growth parameters: plant height, canopy height, shoot density, and biomass yield, across two distinct seasons: the spring-summer dry season and the autumn-winter rainy season. The plant’s adaptation to waterlogging was also analyzed through morphological and physiological assessments. Results show that B. humidicola sustains high productivity across both seasons, with significantly greater biomass yields during the spring-summer period (P<0.05). The species displayed strong waterlogging tolerance, supported by aerenchyma formation in roots and leaf sheaths and effective oxygen release mechanisms. These traits highlight B. humidicola’s potential as a climate-resilient forage crop, capable of adapting to extreme weather patterns associated with climate change, such as prolonged flooding and seasonal droughts. These findings establish B. humidicola as a reliable forage crop for sustainable livestock production in flood-prone and drought regions, ensuring a consistent feed supply for ruminants year-round while supporting agricultural resilience in the face of changing climatic conditions.<br>
本研究以越南承天顺化省（自2025年1月1日起更名为顺化市）为研究区域，探讨了季节性气候变异对湿生臂形草（Brachiaria humidicola）生长与生产性能的影响。研究通过田间试验，在春夏季旱季与秋冬季雨季两个典型季节中，测定了株高、冠层高度、分蘖密度及生物量产量等核心生长参数，并通过形态学与生理学评估分析了该植物的耐渍涝适应性。研究结果表明，湿生臂形草在两个季节均能维持较高生产性能，且春夏季的生物量产量显著更高（差异具有统计学意义，P<0.05）。该物种表现出较强的耐渍涝能力，根系与叶鞘中形成的通气组织以及高效的氧气释放机制可为其耐涝性提供支撑。上述特性凸显了湿生臂形草作为气候韧性饲草作物的潜力，其可适应气候变化引发的极端天气类型，包括长期淹水与季节性干旱。本研究结果证实，湿生臂形草可作为易涝与干旱地区可持续畜牧业生产的可靠饲草作物，能够全年为反刍动物提供稳定的饲料供应，同时在气候变化背景下助力农业韧性提升。
