Effects of Different Application Rates of Black Soldier Fly Frass on Growth of Brassica juncea

Authors

  • Mohd Yusri Zainudin Agrobiodiversity and Environmental Research Centre, Malaysian Agriculture Research & Development Institute (MARDI), MARDI Headquarter, Persiaran MARDI-UPM, 43400 Serdang, Selangor, MALAYSIA
  • Muhammad Ariff Mohd Rasul Agrobiodiversity and Environmental Research Centre, Malaysian Agriculture Research & Development Institute (MARDI), MARDI Headquarter, Persiaran MARDI-UPM, 43400 Serdang, Selangor, MALAYSIA
  • Nurhannah Abdul Halim Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, MALAYSIA

DOI:

https://doi.org/10.53797/agrotech.v5i1.10.2026

Keywords:

Black soldier fly, frass, mustard plant, bio-compost, plant growth

Abstract

Today's agriculture often uses chemical fertilizers excessively, which leads to waste and soil pollution. Although there are many good effects of chemical fertilizers such as it can increase crop productivity but the excessive use of chemical fertilizers causes damage to the environment (Ali et al., 2021). Chemical fertilizers and pesticides are used excessively as a result of the growing global population and the consequent scarcity of land resources. This excessive use causes acidic soil and poisoning of underground water and the environment as a whole (Singh et al., 2021). Black soldier fly frass fertilizer (BSFFF) is the result of the conversion of organic bio-waste using BSF larvae into an organic fertilizer rich in nutrients and it is clean. Anyega et al. (2021) stated that a large amount of frass which is a mixture of substrate, feces, and uneaten exuvial is produced by the mass reproductive system of insects, and it has the potential to increase soil and crop productivity. There are 4 groups namely Control Group (NF), NPK Group (NPK), BSF Group with a litter quantity of 5.0 grams (BSF 5.0) and 2.5 grams (BSF 2.5). NPK fertilizer with a ratio of 16:16:16 was used in this experiment. Control group (NF) is unfertilized medium. Each treatment group had 3 replicates and was conducted in the greenhouse at MARDI. NPK 16-16-16 fertilizer is given according to the recommended quantity on the fertilizer package which is 2.5 grams. Most of the parameters showed that the NPK group had a greater effect on mustard growth in plant height, number of leaves, diameter of plant stem, and wet mass of plants and roots. In some investigations, the lack of compost stability may have contributed to the low growth (Lopes et al., 2022). In this experiment, BSF frass was produced fresh rather than composted afterwards. Composted BSF frass can ensure the stability and maturity of the frass. However, the number of leaves in the NPK treatment group was found to be reduced because some leaves were affected for several reasons. Throughout the observation, most plant pests, such as aphids and whiteflies, tended to come to plants that had been treated with NPK compared to BSF 2.5 and BSF 5.0. Although the NPK treatment group showed better results on mustard compared to the effects of BSF 2.5 and BSF 5.0, it was evident that there were nutrients available in the litter in comparison with the control group.

Keywords: Black soldier fly, frass, mustard plant, bio-compost, plant growth

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References

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Published

2026-06-30

How to Cite

Zainudin, M. Y., Mohd Rasul, M. A., & Abdul Halim, N. (2026). Effects of Different Application Rates of Black Soldier Fly Frass on Growth of Brassica juncea. AgroTech- Food Science, Technology and Environment, 5(1), 80-86. https://doi.org/10.53797/agrotech.v5i1.10.2026