Sustainable production in soilless cultivation systems may be achieved by using recycled organic materials as constituents of growing media (GM) and as organic fertilizers. Synchronizing nutrient releases from organic fertilizer mineralization with plant needs in containerized production is difficult to manage for greenhouse growers. This is further amplified by the diversification of GM constituents, driving microbial activities. We aimed to evaluate how the plant can adapt its nutrition to different organic fertilization strategies and ensure its growth depending on the GM and organic fertilizer types. Ocimum basilicum L. was grown for 60 days in a greenhouse in pots filled with three different GM: 100% peat (Peat); 70% peat and 30% coir fiber (GM1); and 50% coir pith, 25% composted bark, 25% wood fiber (GM2). Two contrasted organic fertilizers were used (horn and a granular fertilizer), mixed to the GM, localized in the pot, or combined with Bacillus sp. inoculation as plant growth-promoting rhizobacteria (PGPR). Standard mineral fertilization mixed to the GM was also used as a control treatment. We investigated basil growth (height, biomass, leaf area, chlorophyll and flavonol contents) as well as nitrogen (N) and phosphorus (P) use efficiencies, from their uptake by the roots to their allocation to the plant organs. Basil performances were mainly affected by the GM type. Peat provided optimal conditions for plant development. In GM1, basil maximized the utilization of available N and P taken up from the GM and reached the highest biomass production. Basil performances were especially low when it was grown on GM2 because of a strong competition for N between microbes and the roots. The fertilizer type, its localization and PGPR inoculation did not affect basil growth or nutrition in peat; these treatments had only little effect on basil grown on GM1 and GM2, and affected its performances differently depending on the GM type. This study provides evidence that fertilization must be thoughtfully managed depending on the GM in organically fertilized systems.

无土栽培系统的可持续生产可以通过使用回收的有机材料作为生长介质 (GM) 的成分和有机肥料来实现。对于温室种植者来说，很难将有机肥料矿化的养分释放与容器化生产中的植物需求同步。转基因成分的多样化进一步放大了这一点，从而推动了微生物活动。我们旨在评估植物如何使其营养适应不同的有机施肥策略，并根据转基因和有机肥料类型确保其生长。罗勒L. 在装有三种不同 GM 的温室中生长了 60 天：100% 泥炭 (Peat)；70% 泥炭和 30% 椰壳纤维 (GM1)；和 50% 椰壳髓、25% 堆肥树皮、25% 木纤维 (GM2)。使用了两种对比的有机肥料（牛角和颗粒肥料），混合到 GM 中，定位在盆中，或与芽孢杆菌结合sp。接种作为植物生长促进根际细菌（PGPR）。与 GM 混合的标准矿物施肥也用作对照处理。我们研究了罗勒的生长（高度、生物量、叶面积、叶绿素和黄酮醇含量）以及氮 (N) 和磷 (P) 的利用效率，从根系吸收到分配到植物器官。罗勒的表现主要受 GM 类型的影响。泥炭为植物发育提供了最佳条件。在 GM1 中，罗勒最大限度地利用了从 GM 中吸收的有效 N 和 P，并达到了最高的生物量产量。当罗勒在 GM2 上生长时，其性能特别低，因为微生物和根之间对 N 的竞争非常激烈。肥料类型、其定位和PGPR接种不影响泥炭中罗勒的生长或营养；这些处理对生长在 GM1 和 GM2 上的罗勒几乎没有影响，并且根据 GM 类型对其性能的影响不同。这项研究提供的证据表明，施肥必须根据有机施肥系统中的转基因进行周到的管理。