Pak J Biol Sci. 2022 Jan;25(1):23-28. doi: 10.3923/pjbs.2022.23.28.
<b>Background and Objective:</b> Seaweed biostimulants are often used in agriculture because of their benefits in increasing growth, production and quality of plants and are safe for the environment. <i>Padina minor</i> is one of the potential seaweeds that contains high macro and micronutrients and has also been shown to increase the vegetative growth of several plants. This study aims to determine the effect of <i>P. minor</i> seaweed extract in various concentrations and frequencies as a biostimulant on the growth and production of soybean plants. <b>Materials and Methods:</b> <i>Padina minor</i> extract was applied to soybean plants with several concentrations (0, 10, 20, 30 and 40%) at three different application times. Where 1 application (2 weeks after planting), 2 applications (2 and 4 weeks after planting) and 3 applications (2, 4 and 5 weeks after planting). <b>Results:</b> <i>Padina minor</i> extract with a concentration of 40% with 1 application was able to increase plant height and shorten soybean harvest life. While the <i>P. minor</i> extract with a concentration of 40% with two and three applications was able to increase the gross and dry weight of plants, the number of pods, gross and dry mass of whole seeds. <b>Conclusion:</b> <i>Padina minor</i> seaweed extract with a concentration of 40% was able to increase the growth and production of soybean plants.
海藻生物刺激剂由于其增加植物生长、产量和质量的益处，常用于农业，并且对环境安全。<i>小凹顶藻</i>是一种具有高宏量和微量元素的潜在海藻，已被证明可以增加几种植物的营养生长。本研究旨在确定不同浓度和频率的<i>小凹顶藻</i>海藻提取物作为生物刺激剂对大豆植物生长和产量的影响。材料与方法：用几种浓度（0、10、20、30 和 40%）的<i>小凹顶藻</i>提取物对大豆植物进行处理，在三个不同的应用时间点进行处理。其中 1 次应用（种植后 2 周）、2 次应用（种植后 2 周和 4 周）和 3 次应用（种植后 2、4 和 5 周）。结果：浓度为 40%的<i>小凹顶藻</i>提取物，1 次应用可增加株高并缩短大豆收获期。而浓度为 40%的<i>小凹顶藻</i>提取物进行 2 次和 3 次应用，可增加植物的总重和干重、荚果数、整粒种子的总重和干重。结论：浓度为 40%的<i>小凹顶藻</i>海藻提取物可增加大豆植物的生长和产量。
