The production of coconut tree seedlings is an important step in the production process, as it substantially affects the productive performance of the adult plant, and the way of obtaining seedlings directly reflects the added costs. To minimize costs, the introduction of biostimulants can be considered a viable and sustainable technology. This study aimed to evaluate the effects of applying Bacillus cereus in promoting growth and reducing the costs of producing Brazilgreen dwarf coconut seedlings. The study has two stages, the first was an experiment carried out in a commercial nursery in the state of Pará-Brazil. The design was completely randomized, with two treatments: control with water (100% mineral fertilization) and B. cereus inoculation (50% mineral fertilization), with 10 replicates each. Biometric parameters and the quality of seedlings were evaluated. In the second stage, the production of stimulated seedlings was compared to that of commercial seedlings, and the effective operating cost (COE) and the total operating cost (TOC) were determined. Biostimulation with B. cereus promotes the growth of coconut tree seedlings, increases seedling quality, and reduces nursery time. In addition, the cost of production is reduced by 10%. Thus, microbial technology is a positive strategy for the production of Brazilian green dwarf coconut seedlings. Using B. cereus can guarantee obtaining seedlings with high performance and at a lower cost. These results may favor obtaining adult plants with high productivity.

椰子苗的生产是生产过程中的重要环节，它很大程度上影响着成株的生产性能，而获得苗木的方式直接体现了附加成本。为了最大限度地降低成本，引入生物刺激剂可以被认为是一种可行且可持续的技术。本研究旨在评估应用蜡样芽孢杆菌在促进巴西绿矮生椰子苗生长和降低生产成本方面的效果。该研究分为两个阶段，第一个阶段是在巴西帕拉州的一个商业苗圃中进行的实验。该设计是完全随机的，有两种处理：用水对照（100% 矿物肥料）和蜡样芽胞杆菌接种（50% 矿物肥料），每个处理 10 个重复。评估了生物特征参数和幼苗的质量。第二阶段，将刺激苗的产量与商业苗的产量进行比较，并确定有效运营成本（COE）和总运营成本（TOC）。蜡状芽胞杆菌的生物刺激可促进椰子树幼苗的生长，提高幼苗质量，并缩短育苗时间。此外，生产成本降低了10%。因此，微生物技术是巴西绿矮椰子苗生产的积极策略。使用蜡样芽孢杆菌可以保证以较低的成本获得高性能的苗木。这些结果可能有利于获得高产的成年植物。