Abstract
DOI:10.15414/afz.2015.18.03.56–62 Received 20. February 2015 ǀ Accepted 6. May 2015 ǀ Available online 14. October 2015 The effect of fertilization on the dynamic change of soil organic matter (SOM) in loamy Haplic Luvisol was studied. In 2008-2011, soil samples were taken from following treatments: 1. C– non-fertilized, 2. PR+NPK – plant residues together with NPK fertilizers, and 3. NPK – NPK fertilizers. The results showed that the content of soil organic carbon in water-stable micro-aggregates (SOC in WSA mi ) increased by 11% and by 13% in PR+NPK and NPK treatments, respectively. The ratios of SOC in WSA mi /SOC in bulk soil in the NPK fertilized treatment and in PR+NPK were 14% and 4% higher than in the non-fertilized treatment, respectively. Overall the ratios of SOM in WSA/SOM in bulk soil were higher in macro-aggregates than micro-aggregates. In fertilized treatments, the statistical significant changes in dynamics of labile carbon in water-stable macro-aggregates (C L in WSA ma ) and in WSA ma 0.5-3 mm were observed. In fertilized treatments (PR+NPK and NPK) there were observed significant decrease of the C L in WSA ma . The ratios C L in WSA mi also WSA ma /C L in bulk soil decreased due to ploughed plant residues together with NPK fertilizers, the ratio of C L in WSA ma /C L in soil decreased due to added only NPK fertilizers also.
Highlights
Increasing problems concerning the environmental quality in arable landscapes, and the long-term productivity of agro-ecosystems, have emphasized a need to develop and improve management strategies that maintain and protect soil function and resources
The ratios of SOC in WSAmi/SOC in bulk soil in the NPK fertilized treatment and in PR + NPK were 14% and 4% higher than in the non-fertilized treatment, respectively. These results demonstrated that all treatments of fertilization had a rather high ability to the sequestration of SOC from bulk soil to WSAmi compared to non-fertilized treatment
The results underscore the importance of fertilization in relation with carbon sequestration, mainly in waterstable macro-aggregates, especially in arable Haplic Luvisol and its meaning is emphasized in this study
Summary
Increasing problems concerning the environmental quality in arable landscapes, and the long-term productivity of agro-ecosystems, have emphasized a need to develop and improve management strategies that maintain and protect soil function and resources. Using the knowledge of chemistry and soil physics, one is able to design the proper soil management practices, ensuring its protection and sustainable production. Soil aggregation is an important process of carbon sequestration, but it is a key factor controlling the quality of arable soils, as it plays an important role in the formation of their optimal physical conditions. It can be affected by the whole complex of natural and anthropogenic influences. Fertilizers may affect the soil and plant growth in a number of different ways (Millar et al, 1962)
Sign-in/Register to view highlights & summary 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.
