Meat and bone meal stimulates microbial diversity and suppresses plant pathogens in asparagus straw composting

Abstract

Meat and bone meal (MBM), as slaughterhouse waste, is a potential biostimulating agent, but its efficiency and reliability in composting are largely unknown. To access the MBM application to the composting process of asparagus straw rice, we followed the composting process for 60 days in 220-L composters and another 180 days in 20-L buckets in treatments applied with MBM or urea. The microbial succession was investigated by high-throughput sequencing. Compared with urea treatments, MBM addition stabilized pH and extended the thermophilic phase for 7 days. The germination index of MBM treatments was 24.76% higher than that of urea treatments. MBM also promoted higher microbial diversity and shifted community compositions. Organic matter and pH were the most significant factors that influence the bacterial and fungal community structure. At the genus level, MBM enriched relative abundances of organic matter-degrading bacteria (Alterococcus) and lignocellulose-degrading fungi (Trichoderma), as well as lignocellulolytic enzyme activities. Notably, MBM addition decreased sum abundances of plant pathogenic fungi of Phaeoacremonium, Acremonium, and Geosmithia from 17.27 to 0.11%. This study demonstrated the potential of MBM as an effective additive in asparagus straw composting, thus providing insights into the development of new industrial aerobic fermentation.

Fire and Rhizosphere Effects on Bacterial Co-Occurrence Patterns

“…The five most influential taxa in the unburnt rhizosphere network belonged completely or partially to the category of biofertilizers, such as Pseudorhoplanes [ 59 ] and Hippea [ 60 ], two to the decomposers, Piscinibacter aquaticus [ 61 ], and Adhaeribacter [ 62 ], and one to bioprotectants, Geodermatophilus [ 63 ] ( Figure 1 ). The burnt rhizosphere network had recorded three biofertilizers Skermanella [ 64 ], Roseomonas [ 65 ] and Paenibacillus brasilliensis [ 66 ], one decomposer Alterococcus [ 67 ], and one bioprotectant Umezawaea [ 68 ]. Biofertilizers also exert a great influence on the burnt bulk plots where Roseomonas , Skermanella , Paenibacillus, as well as the bioprotectant Umezawaea and the decomposer Alterococcus, were recorded.…”

Effect of Bone Char Application on Soil Quality, Soil Enzyme and in Enhancing Crop Yield in Agriculture: A Review

“…Improvement in soil properties can enhance the activity of BGA due to its sensitivity to soil pH and carbon content [38]. However, the production of carbon black (CB) at high temperature has been found to have negative effect on soil microbial communities, resulting in decreased activity of specific enzymes like dehydrogenase [39]. The adverse impact of CB on soil microbiology has also been documented in other studies.…”

“…The adverse impact of CB on soil microbiology has also been documented in other studies. The measurement of dehydrogenase activity (DHA) provides an indication of the overall activities of soil microorganisms [40].…”

Effects of straw addition on the physicochemical and microbial features of black soldier fly larvae frass derived from fish meat and bone meal

“…MBM has recently been demonstrated to suppress pathogenic microbes in compost (X. Liu et al, 2022). However, due to the bovine spongiform encephalopathy crisis, many countries strictly control the use of MBM as feed (Woodgate and Wilkinson, 2021).…”

“…calcium and phosphorus) (Zaharioiu et al, 2022), MBM has been used in animal feed (Choi et al, 2021; Moutinho et al, 2017) or as soil amendments (Staroń et al, 2017). MBM has recently been demonstrated to suppress pathogenic microbes in compost (X. Liu et al, 2022).…”