Copper, iron and zinc nanoparticles (NPs) were synthesized with aqueous extract of Tridax procumbens. The NPs were characterized with UV–Vis, Fourier-transform infrared (FTIR), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and energy-dispersive X-ray spectroscopy (EDX). The maximum absorbance for Cu, Fe and Zn NPs occurred at 300, 318 and 306 nm respectively. Prominent bands on the FTIR spectra established that phyto-compounds in T. procumbens extract are creditable for the reduction and stabilizing process to produce particles ranging from 2.98–100 nm. The nanoparticles were evaluated for their nematicidal activities in field trials on cabbage plants in comparison with the standard nematicide carbofuran. Potent nematicidal activity was notably displayed by the NPs at 100 ppm on Meloidogyne incognita population in 200 cc of soil, number of eggs and gall index. Significantly higher yield was recorded in cabbage plants treated with T. procumbens CuNP contrary to other NPs and untreated cabbage plants. CuNPs can be applied in M. incognita management in place of synthetic nematicides for sustainable cabbage production.

用平地砗磲水提取物合成铜、铁和锌纳米颗粒（NP） 。通过紫外-可见光、傅里叶变换红外（FTIR）、透射电子显微镜（TEM）、选区电子衍射（SAED）和能量色散X射线光谱（EDX）对纳米颗粒进行了表征。Cu、Fe 和 Zn NP 的最大吸光度分别出现在 300、318 和 306 nm 处。FTIR 光谱上的显着谱带表明， T. procumbens提取物中的植物化合物对于产生 2.98–100 nm 颗粒的还原和稳定过程至关重要。在卷心菜田间试验中，与标准杀线虫剂克百威相比，评估了纳米颗粒的杀线虫活性。100 ppm 的 NP 对 200 cc 土壤中的根结线虫种群、卵数和虫胆指数显着显示出有效的杀线虫活性。与其他 NP 和未经处理的卷心菜植物相比，用T. procumbens CuNP处理的卷心菜植物的产量显着提高。CuNP 可代替合成杀线虫剂应用于南方根结线虫管理，以实现可持续卷心菜生产。