Recycled pangasius pond sediments as organic fertilizer for vegetables cultivation: strategies for sustainable food production

Effects of organic fertilizers produced from fish pond sediment on growth performances and yield of Malabar and Amaranthus vegetables

“…Pangasius catfish ponds in Vietnam (Phu and Tinh, 2012;Da et al, 2020Da et al, , 2021, Bangladesh (Haque et al, 2016), and rainbow trout ponds in Poland (Drózdz et al, 2020). However, it was lower compared with the levels reported for manures from cattle, chicken, and horses (Rahman et al, 2004;Boyd et al, 2011;Karak et al, 2013).…”

“…To make the sludge more suitable as organic fertilizer, it was complemented with peanut shell and coconut fiber, which contained higher contents of TN, TP, and TK than many other organic amendments that have been used in previous studies, such as rice straw, water hyacinth (Thanh et al, 2015;Da et al, 2020Da et al, , 2021, wheat straw, potato plant residues, mustard stover, and freshly cut grass (Karak et al, 2013;Drózdz et al, 2020). Overall, the results show that organic composting is an effective way to reuse fish pond sediments and local agricultural waste in a mixture that can be converted into relatively valuable organic fertilizers for vegetable farming and other agricultural production (Karak et al, 2013;Thanh et al, 2015;Saldarriaga et al, 2019).…”

“…Currently, there are few solutions to solve the problem of wastewater and sludge from aquaculture farming systems. As the sludge includes uneaten feed and fish feces and has high organic material (OM), nitrogen (N), phosphorus (P), and other macronutrient and micronutrient contents (Thanh et al, 2015;Haque et al, 2016;Da et al, 2020Da et al, , 2021, one option could be to use it as a fertilizer for improving the productivity of vegetables and other crops. This would reduce the reliance on inorganic fertilizers and reduce the treatment cost of sludge/sediment while reducing the negative impacts and pollution from aquaculture production on the environment.…”

“…This would reduce the reliance on inorganic fertilizers and reduce the treatment cost of sludge/sediment while reducing the negative impacts and pollution from aquaculture production on the environment. There are a number of studies in Thailand, China, Vietnam, and Bangladesh that have focused on how to recycle wastewater and sludge/sediment from catfish pond farming and composting fish pond sludge/sediment mixed with agriculture waste residues (water hyacinth, rice straws, and weeds/green grass) as organic fertilizers for paddy rice, common vegetables (such as cucumber, water spinach, and Chinese mustard), and fodder grass (Graber and Junge, 2009;Phung et al, 2009;Karak et al, 2013;Da et al, 2015Da et al, , 2020Da et al, , 2021Thanh et al, 2015;Haque et al, 2016).…”

“…At the same time, the price of agricultural products (vegetables, fruits, and rice production) has remained comparatively low and unprofitable, and there is now a need for farmers to reduce their reliance on expensive chemical fertilizers. Previous studies have reported that the composting of sediment from Pangasius catfish pond farming mixed with locally sourced organic residues (rice straw and/or water hyacinth) could be used as organic fertilizers, which could provide an alternative to chemical fertilizers and help to mitigate water pollution, while still improving agricultural production and soil quality (Rahman et al, 2004;Rahman and Yakupitiyage, 2006;Thanh et al, 2015;Da et al, 2020Da et al, , 2021.…”