Abstract
Having up-to-date knowledge on the mineralization of organic materials and release of nutrients is of paramount significance to ensure crops’ nutrient demands, increase nutrient use efficiency and ensure the right fertilizer application at the right time. This study seeks to evaluate the mineralization patterns of various manures viz. cowdung (CD), cowdung slurry (CDSL), trichocompost (TC), vermicompost (VC), poultry manure (PM), poultry manure slurry (PMSL), and mungbean residues (MR). The objective being to establish their efficiency in releasing nutrients under aerobic (field capacity) and anaerobic (waterlogging) conditions. The incubation experiment was designed using a Completely Randomized Design (CRD) that took into account three variables: Manures, soil moisture, and incubation period. The mineralization of carbon (C) and nitrogen (N) ranged from 11.2 to 100.1% higher under aerobic conditions rather than anaerobic ones. The first-order kinetic model was used to mineralize both elements. C mineralization was 45.8 to 498.1% higher in an amount from MR under both moisture conditions. For N release, MR and PM exerted maximum amounts in anaerobic and aerobic scenarios, respectively. However, the rate of C and N mineralization was faster in TC compared to other manures in both moisture conditions. Although TC was 1.4 to 37.7% more efficient in terms of rapidity of mineralization, MR and PM performed better concerning the quantity of nutrient release and soil fertility improvement. PM had 22–24% higher N mineralization potential than PMSL while CDSL had 46–56% higher N mineralization potential than CD. C and N mineralization in soil was greater under aerobic conditions compared to what occurred in the anaerobic context. Depending on mineralization potential, the proper type and amount of manure should be added to soil to increase crops’ nutrient use efficiency, which in turn should lead to better crop production.
Highlights
The decline of soil fertility is endangering crop yields in many countries of the world including Bangladesh, which relies greatly on the agriculture industry for its economy and exports
Nutrient availability is affected by the incorporation of organic manures that differ in quality and there should be proper addition of manures in the soil to optimize their nutrient release and synchronize with the crop demand
Based on this incubation experiment, we found that the first-order kinetic cumulative model could fit well with the observed C and N mineralization data of all cases
Summary
The decline of soil fertility is endangering crop yields in many countries of the world including Bangladesh, which relies greatly on the agriculture industry for its economy and exports. Nutrient mining from our soils is caused by increased cropping intensity, cultivation of contemporary varieties (high yielding varieties and hybrids) and high biomass crops, nutrient loss, and unbalanced use of chemical fertilizers, with or without mixing organic manures [1,2]. Improper application of inorganic fertilizers has resulted in a considerable diminishment of soil organic matter content, greatly affecting soil health [3]. Adding organic sources of plant nutrients like manures and composts should be considered as a viable sustainable approach because eco-friendly technologies can restore soil fertility, enhance crop productivity and protect the environment from man-made damage [4]. According to Escobar and Hue [5], the application of organic manures in the soil directly influences organic matter content, which improves soil’s physico-chemical properties and fertility, encourages microbial activities, and amends metal toxicity by complexation. Improvement and sustenance of crop yield and soil fertility might be achievable through the adoption of efficient nutrient management where manures and fertilizers are intelligently integrated
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
