International Journal of Recycling of Organic Waste in Agriculture
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Investigation of negative effects of rice husk silica on komatsuna growth using three experimentsAbstract
Purpose
Methods
Results
Conclusions
International Journal of Recycling of Organic Waste in Agriculture - - 2019
This study aims to evaluate the potential negative effects of rice husk as a source of fertilizer on plant growth.
Growth tests were conducted on komatsuna (
The results showed that komatsuna grew better with the application of silica mixed with fertilizer, and that there was an optimal quantity of silica to be used, when used on its own. It was found that, in all cases, the silica in the rice husk ash did not have any measurable negative effects on the growth of the komatsuna.
We, therefore, conclude that rice husk silica can undoubtedly be used for plant cultivation.
Agrowaste bioconversion and microbial fortification have prospects for soil health, crop productivity, and eco-enterprising
International Journal of Recycling of Organic Waste in Agriculture - Tập 8 - Trang 457-472 - 2019
Agricultural chemicals either used as nutrient inputs for soil fertility or pesticides are creating physicochemical and biological deterioration of the soils and disturbing the agro-ecosystems worldwide. Alarming concerns towards integrated agroecology demand for renewed interest in low-external input-based farming practices. These practices comprise strengthening of soil biological properties, recycling of inherent soil minerals and reuse of agricultural residual wastes. We described approaches for the bioconversion of agricultural residual wastes into value-added compost. The process involves conversion of residual waste into raw compost followed by its fortification with beneficial decomposer microorganisms to produce quality fortified compost product. Finally, incubation of fortified compost with single or consortia of beneficial microorganisms like N-fixers, P-solubilizers or K-mobilizers and biocontrol agents further enriches compost to produce bioorganic products. Bioconversion of agricultural wastes into compost using potential decomposer microorganisms and fortification of decomposed organic matter with beneficial bacterial and fungal species is of immense importance. Additional enrichment of compost with botanicals, humic acid, amino acids, mineral nutrients, phytohormones etc. may also add value to the bioinput products. In an integrated way, on-farm production of raw compost using different agricultural residual wastes and its further fortification with bioorganic farm inputs can help farmers produce value-added compost products for direct application in the crop production. Adoption of microbial bioconversion technologies and their field applications may become eco-enterprising for the rural resource-poor farming communities for enhancing their livelihood along with improving farm productivity and soil health.
A field study on the effect of organic soil conditioners with different placements on dry matter and yield of tomato (Lycopersicon esculentum L.)
International Journal of Recycling of Organic Waste in Agriculture - Tập 8 - Trang 59-66 - 2018
Four different types of composts were assessed in two methods of application for their potential to support organic tomato yield. A 2-year experiment was conducted using four different soil conditioners: cow manure (CM), household compost (HC), spent mushroom compost (SMC), and vermicompost (VC). Three different application rates (10, 20, and 30 t ha−1 for all composts except VC and 3, 6, and 9 t ha−1 for VC) were included as a second factor. Two methods of fertilizer placement (as a row behind the root area and broadcast on the field) were considered as a third factor. The yield was influenced by different soil conditioners and placement method in the first year; in the second year, just interactions were significantly different. Treatments with CM showed significantly higher tomato yield in the first year (103 t ha−1) compared to other composts, but in the second year, SMC produced a higher yield (58 t ha−1). The experiment indicated that the treatment with CM in high level with broadcast application had higher dry matter (DM) production (3.1 t ha−1) in 2014, and treatment with CM in low rate and broadcast application had higher DM production (5.8 t ha−1) in 2015. Compost broadcast on the plots showed a higher yield production in case of similar rates and compost type. The proper rate of compost application is dependent on the method of compost placement.
Poultry feather waste management and effects on plant growth
International Journal of Recycling of Organic Waste in Agriculture - Tập 7 - Trang 183-188 - 2018
Poultry industries produce a lot of feathers which are considered as waste and needs to be managed properly. Poultry feathers are rich with keratin protein and therefore they could be a source for good nitrogen fertilizer. Proper treatment of poultry feather waste (PFW) might be an environmental friendly solid waste management tool and a good source of N-rich organic fertilizer. PFW was treated under a mixture of both aerobic and anaerobic processes. Treated poultry feather waste (TPFW) was analyzed for different nutrient elements. TPFW was applied to the soil at 4, 8, 12 and 16 t/ha along with control. Ipomoea aquatica was grown as the test plant to evaluate the growth performance under different rates of TPFW application. Plants were harvested 7 weeks after seed germination. TPFW contained higher amount of organic matter (35.9%) and total nitrogen (4%). Other major nutrient elements were found to be satisfactory. Color of the plants were observed greener in TPFW applied plants than control plants and the green color was pronounced with increasing rate of TPFW application. Plant height (cm/plant), leaf number per plant and weight of plants (g/plant) was also increased significantly due to the application of TPFW at 12 t/ha and above. Proper treatment of PFW might be an environmental friendly, cost effective and sustainable strategy for PFW management that will also play a vital role in nutrient (especially nitrogen) recycling to the soil.
Effect of incremental levels of apple pomace and multi enzyme on performance, immune response, gut development and blood biochemical parameters of broiler chickensAbstract
Purpose
Methods
Results
Conclusion
International Journal of Recycling of Organic Waste in Agriculture - Tập 8 Số S1 - Trang 321-334 - 2019
During the apple processing procedures, a large amount of apple pomace is generated which is contains peel, core, seed, calyx, stem, and soft issue. The polyphenolic compounds in apple pomace are strong antioxidants that are able to counterbalance the free radicals; also, it is a rich source of many nutrients such as carbohydrates, minerals, fiber except protein. The experiment was conducted to investigate the effect of different levels of dried apple pomace in broilers diet.
The incremental levels of dried apple pomace (4, 8, 12, 16 and 20%) with and without enzyme were used in broilers diet (8 dietary treatments). The growth performance, immune response, gut development, antioxidant capacity (TAC) and blood biochemical parameters were evaluated.
The lowest daily weight gain, body weight and poorest feed conversion ratio was obtained by F treatment (
The results suggested that the incremental levels of dried apple pomace deteriorate growth performance, modified antibody titer production, total antioxidant capacity and blood parameters of broilers.
Influence of powdered Moringa oleifera seeds and natural filter media on the characteristics of tapioca starch wastewater
International Journal of Recycling of Organic Waste in Agriculture - - 2013
Potential for biogas production from the anaerobic digestion of chicken droppings in Morocco
International Journal of Recycling of Organic Waste in Agriculture - Tập 5 - Trang 195-204 - 2016
The chicken droppings can have a negative impact on the environment and public health. In this work, we are interested in treating this waste by anaerobic digestion and we estimate the national potential of green energy produced by anaerobic digestion and map the areas that need digesters to improve national poultry farming. The anaerobic digestion of this waste is performed in three steps. In the first step, the chicken droppings are placed in a laboratory digester without pretreatment. In the second step, the droppings are placed in an industrial digester without pretreatment. In the third step, a methanogenic inoculum is incubated with the chicken droppings in a batch digester. The biogas production is measured by manometer, and the composition of this biogas is analyzed by gas chromatography. The chicken droppings without pretreatment generated a small amount of biogas (11.24 and 20 m3 for one ton of waste fresh) in the laboratory and in the prototype digester. After pretreatment (heating and grinding), this waste produced a large quantity of biogas, on the order 230,58 ml/gCOD, equivalent to 64.4 m3 for one ton of fresh waste, with 60.2 % methane, 38.8 % carbon dioxide and 0 % hydrogen. This biogas production has a lower heating value of 385 kWh for one ton of chicken droppings. Based on these results, our country has high potential for green energy (200 GWh) by transforming the droppings of broilers by anaerobic digestion. In Morocco, the installation of biogas digesters in poultry units is an effective technique for this industry, because this waste is a potential energy source.
Growth and proximate composition of Amaranthus cruentus L. on poor soil amended with compost and arbuscular mycorrhiza fungi
International Journal of Recycling of Organic Waste in Agriculture - Tập 6 - Trang 195-202 - 2017
The study was carried out to examine growth, shoot yield, dry matter and proximate composition of Amaranthus cruentus on poor soil augmented with compost or AMF either singly or in combination. The experiment was arranged in completely randomized designed in six replicates with four treatments. Four treatments: comprised control and three other amendment types derived from the application of compost made from cattle dung and maize stover, arbuscular mycorrhiza fungi singly or in combination with compost. The treatments were applied a week before sowing to allow for proper mineralization. Growth characteristics, chlorophyll content, ascorbic acid content and proximate composition were assessed. The results revealed that the compost supplied sufficient plant nutrients needed for improving biological and economic yields of Amaranthus cruentus . Application of compost significantly (P ≤ 0.05) influenced growth, dry matter and fresh shoot yield of A. cruentus. Applying of combination AMF and compost to nutrient limiting soil had no significant (P ≥ 0.05) effect on yield and yield components of A. cruentus. Proximate composition of A. cruentus was significantly enhanced in pots augmented with compost better than pots amended with the combination of AMF and compost. Application of compost to nutrient deficient soil promoted growth, fresh shoot and dry matter yield of A. cruentus. Similarly, proximate composition of the crop was appreciably influenced by compost application.
Aerated chicken, cow, and turkey manure extracts differentially affect lettuce and kale yield in hydroponics
International Journal of Recycling of Organic Waste in Agriculture - Tập 8 - Trang 241-252 - 2019
Manure extracts possess great potential as alternate inorganic fertilizers. However, limited information exists on how manure influences plant growth. This study’s aim was to determine the impact of aerated manure extracts on romaine lettuce (Lactuca sativa var. longifolia) and Russian kale (Brassica napus var. ‘Red Russian’) in hydroponic systems. Chicken, cow, and turkey manure extract solutions (10, 25, and 50 g/L manure) were compared to a control (Hoagland) solution for lettuce and kale grown in an ebb and flow hydroponic system. The aboveground dry mass of lettuce grown in a 50 g/L turkey manure extract solution was greater than that of the control. The largest aboveground wet mass for kale occurred with the control. Nutrient analyses of all manure extract solutions showed a 29%–79% higher concentration of NH4–N and higher total nitrogen than the control. Principal component analysis of the nutrient solutions identified six nutrients that should be monitored to maximize plant yield when using manure extracts in hydroponics: NO3−, NH4+, Ca, Mg, Mn, and Na. Healthy lettuce and kale plants were grown in turkey manure extract solution (50 g/L). However, reduced aboveground wet and dry mass were recorded for both plants in chicken and cow manure extract solutions compared to the control. NH4+ toxicity likely killed all plants grown in chicken extract (50 g/L). Apart from NH4+ and P, all nutrients were below suggested concentrations suggested for lettuce growth. A combined manure/mineral fertilizer may be necessary to optimize hydroponic solutions.
Influence of compost supplemented with jatropha cake on soil fertility, growth, and yield of maize (zea mays L.) in a degraded soil of Ilorin, Nigeria
International Journal of Recycling of Organic Waste in Agriculture - Tập 7 Số 1 - Trang 67-73 - 2018
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