Agricultural land application of Protaetia brevitarsis larvae manure (PM) is a common process that improves soil fertility and increases crop production. The objective of this study was to evaluate the effects of PM on the growth of lettuce and soil chemical properties. Lettuce was planted in silt loam soil amended with three rates of PM 0 (CF), 540 (CFP1), and 1,080 (CFP2) kg 10a -1 with chemical fertilizer (20.0 kg 10a -1 N, 5.9 kg 10a -1 P 2 O 5 , and 12.8 kg 10a -1 K 2 O) and animal mixed compost 540 kg 10a -1 with chemical fertilizer (CFC). Increasing rates of PM caused a significant increase in soil organic matter content and yield of lettuce compared to CF (P < 0.05). Our findings suggest that Protaetia brevitarsis larvae manure can be used as an organic fertilizer to raise crops.

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This study was conducted to investigate the effects of the application of Protaetia brevitarsis larvae manure (PM) on the growth lettuce (Lactuca sativa L.) and red pepper (Capsicum annuum L.). Crops were planted in pots containing silt loam soils and cultivated with the basal application of chemical fertilizer at a standard rate (10.0 kg N 10a -1 , 5.9 kg P 2 O 5 10a -1 , 6.5 kg K 2 O 10a -1 , and calcium carbonate 170 for lettuce and 10.3 kg N 10a -1 , 11.2 kg P 2 O 5 10a -1 , 9.1 kg K 2 O 10a -1 , calcium carbonate 170 for red pepper) and PM at three rates (0, 540, and 1,080 kg) in pots (1/5000a). The growth of lettuce and red pepper increased with increased application of PM. Our results suggest that PM can be used as organic amendment for crop cultivation.

The forecasted growth of edible insect production will generate high quantities of manure. Agricultural application of Tenebrio molitor frass (TMF) may improve soil fertility and increases crop production. This study was conducted to determine an optimum application rate of TMF for ginseng sprout growth in commercial potting soil. Ginseng was seeded in commercial potting soil (control), TMF 3% + perlite 30% + cocopeat 67% (TMF 3%), TMF 5% + perlite 30% + cocopeat 65% (TMF 5%), and TMF 10% + perlite 30% + cocopeat 60% (TMF 10%). The results showed that the germination rate of ginseng in the TMF 3% treatment was significantly higher than those in the other treatments. In addition, plant height, leaf length, leaf width, root length, and root weight of ginseng sprout showed significantly higher in TMF 3% treatment, leading to a lower SPAD value due to nitrogen dilution compared to those of control and TMF 5%. Our findings suggest that application of TMF at 3% is suitable for production of ginseng sprout in commercial potting soil.