The suitability of mulch for weed control in cultivated Mentha x piperita L. has been insufficiently studied. The results of this study show that this crop is sensitive to weed infestation. The objective was to evaluate the effects of mulch materials on weed suppression and yield of M. piperita. Two organic mulches, sawdust of acacia and dry pine needles, and two synthetic mulches, silver-brown and black “agrotextile” film, were compared with hand-weeded and non-weeded controls. Weed density and biomass per species were reduced in all treatments. The best biomass reduction was achieved with silver-brown film (96.3–100%) followed by black “agrotextile” film (74.6–95.9%). The treatments also reduced total dry weed biomass; the synthetic ones reduced biomass in the range of 84.6–100%, and the organic ones 28.5–81.4%. Under synthetic mulches, M. piperita generally achieved higher yields than under organic mulches. The best yields were obtained in 2016 with black “agrotextile” film (4.2 t ha⁻¹) and in 2017 with silver-brown film (1.5 t ha⁻¹). Significant differences in the relative chlorophyll content of M. piperita leaves were observed between treatments. The lowest inhibition of relative chlorophyll content compared to the hand-weeded control was observed in synthetic mulches. They ranged from − 1.93–4.53%, confirming their superiority in terms of the herbal drug M. piperita. The outcomes of this study show that the application of synthetic mulches, especially the silver-brown film, seems to be the most suitable model for non-chemical weed control in M. piperita cultivation.

覆盖物对栽培薄荷属植物杂草控制的适用性尚未充分研究。这项研究的结果表明，这种作物对杂草侵扰敏感。目的是评估覆盖材料对胡椒芥杂草抑制和产量的影响。两种有机覆盖物、金合欢木屑和干松木将针和两种合成覆盖物（银棕色和黑色“农用纺织品”薄膜）与手工除草和非除草对照进行比较。所有处理中杂草密度和每种物种的生物量均有所降低。银棕色薄膜（96.3-100%）实现了最佳的生物量减少，其次是黑色“农用纺织品”薄膜（74.6-95.9%）。这些处理还减少了干杂草总生物量；合成生物量减少了 84.6-100% 的生物量，有机生物量减少了 28.5-81.4%。在合成覆盖物下，胡椒粉通常比在有机覆盖物下获得更高的产量。^{2016 年使用黑色“农用纺织品”薄膜（4.2 t ha -1}）获得最佳产量，2017 年使用银棕色薄膜（1.5 t ha ^-1 ）获得最佳产量。相对叶绿素含量的显着差异在处理之间观察胡椒粉叶子。与手工除草对照相比，在合成覆盖物中观察到相对叶绿素含量的抑制最低。它们的范围为 - 1.93–4.53%，证实了它们在草药M. Piperita方面的优越性。这项研究的结果表明，应用合成覆盖物，尤其是银棕色薄膜，似乎是胡椒栽培中非化学杂草控制的最合适模式。