Effect of spent coffee grounds and liquid worm fertilizer on the growth and yield of Brassica campestris L.



Brassica campestris L.; coffee grounds; liquid worm fertilizer; pickled mustard greens


Brassica campestris L. plants are widely grown, including in Asian countries where the leaves are used to prepare Chinese sour pickled mustard greens. The potential benefits of the application of organic by-products and organic fertilizers in sustainable agricultural production have been shown in previous studies. Consequently, this study investigated the effectiveness of liquid worm fertilizer (LWF) and spent coffee grounds (SCG) individually and in combination on the growth of B. campestris. The results showed that LWF at the highest dose had positive effects on the growth and yield of B. Campestris, but SGC had inhibitory effects. The treatment consisting of composted SCG + triple of the standard dose of LWF resulted in the best plot yield with 3866.7 g.plot-1, followed by the treatment of fresh SCG + triple of the standard dose of LWF, which produced a yield of 3766.7 g.plot-1. The lowest yield (2100.0 g.plot-1) was observed in the treatment of 1kg.m-2 fresh SCG + no LWF. The interaction effect between SCG and LWF on the plot yield of B. campestris L. was significant (F(4,18) = 4.6; p = 0.01) demonstrating enhanced yield when both SCG  and LWF were used in combination.

Author Biographies

  • Thi-Thuy-Hai Luu, Tra Vinh University

    Research and Academic Experience: She has been working at Tra Vinh University for 20 years in the role of lecturer and researcher. Currently, she is head of Agriculture department at Tra Vinh University
    Research Area: Her Research Area includes Biodiversity of microbial level, applied microbiology and mushroom cultivation technology.
    She did her Ph.D at Bournemouth University

  • Truc-Linh Le, Tra Vinh University

    Dr. Linh’s major is Agricultural Economics. She finished her doctorate in Agricultural Economics in 2018, Taiwan. She is teaching and doing research related to Agricultural Economics Development and rural households’ income. Currently, her interest is in developing sustainable agricultural production chains, adapting to climate change in the Mekong Delta of Vietnam. Currently, she is the Dean of School of Agriculture and Aquaculture, Tra Vinh University, Vietnam.


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Plant Science