The importance of initial application and reapplication of biochar in the context of soil structure improvement

It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The imp...
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Autor*in:	Juriga Martin [verfasserIn] Aydın Elena [verfasserIn] Horák Ján [verfasserIn] Chlpík Juraj [verfasserIn] Rizhiya Elena Y. [verfasserIn] Buchkina Natalya P. [verfasserIn] Balashov Eugene V. [verfasserIn] Šimanský Vladimír [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	biochar soil organic matter water-stable aggregates soil structure haplic luvisols

Übergeordnetes Werk:	In: Journal of Hydrology and Hydromechanics - Sciendo, 2015, 69(2021), 1, Seite 87-97
Übergeordnetes Werk:	volume:69 ; year:2021 ; number:1 ; pages:87-97

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.2478/johh-2020-0044

Katalog-ID:	DOAJ077834186

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allfields	10.2478/johh-2020-0044 doi (DE-627)DOAJ077834186 (DE-599)DOAJddc07ca4b8c149b79e6f513748b8db60 DE-627 ger DE-627 rakwb eng TC1-978 Juriga Martin verfasserin aut The importance of initial application and reapplication of biochar in the context of soil structure improvement 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not. biochar soil organic matter water-stable aggregates soil structure haplic luvisols Hydraulic engineering Aydın Elena verfasserin aut Horák Ján verfasserin aut Chlpík Juraj verfasserin aut Rizhiya Elena Y. verfasserin aut Buchkina Natalya P. verfasserin aut Balashov Eugene V. verfasserin aut Šimanský Vladimír verfasserin aut In Journal of Hydrology and Hydromechanics Sciendo, 2015 69(2021), 1, Seite 87-97 (DE-627)604801416 (DE-600)2503779-1 13384333 nnns volume:69 year:2021 number:1 pages:87-97 https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 kostenfrei https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/toc/0042-790X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 69 2021 1 87-97
spelling	10.2478/johh-2020-0044 doi (DE-627)DOAJ077834186 (DE-599)DOAJddc07ca4b8c149b79e6f513748b8db60 DE-627 ger DE-627 rakwb eng TC1-978 Juriga Martin verfasserin aut The importance of initial application and reapplication of biochar in the context of soil structure improvement 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not. biochar soil organic matter water-stable aggregates soil structure haplic luvisols Hydraulic engineering Aydın Elena verfasserin aut Horák Ján verfasserin aut Chlpík Juraj verfasserin aut Rizhiya Elena Y. verfasserin aut Buchkina Natalya P. verfasserin aut Balashov Eugene V. verfasserin aut Šimanský Vladimír verfasserin aut In Journal of Hydrology and Hydromechanics Sciendo, 2015 69(2021), 1, Seite 87-97 (DE-627)604801416 (DE-600)2503779-1 13384333 nnns volume:69 year:2021 number:1 pages:87-97 https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 kostenfrei https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/toc/0042-790X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 69 2021 1 87-97
allfields_unstemmed	10.2478/johh-2020-0044 doi (DE-627)DOAJ077834186 (DE-599)DOAJddc07ca4b8c149b79e6f513748b8db60 DE-627 ger DE-627 rakwb eng TC1-978 Juriga Martin verfasserin aut The importance of initial application and reapplication of biochar in the context of soil structure improvement 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not. biochar soil organic matter water-stable aggregates soil structure haplic luvisols Hydraulic engineering Aydın Elena verfasserin aut Horák Ján verfasserin aut Chlpík Juraj verfasserin aut Rizhiya Elena Y. verfasserin aut Buchkina Natalya P. verfasserin aut Balashov Eugene V. verfasserin aut Šimanský Vladimír verfasserin aut In Journal of Hydrology and Hydromechanics Sciendo, 2015 69(2021), 1, Seite 87-97 (DE-627)604801416 (DE-600)2503779-1 13384333 nnns volume:69 year:2021 number:1 pages:87-97 https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 kostenfrei https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/toc/0042-790X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 69 2021 1 87-97
allfieldsGer	10.2478/johh-2020-0044 doi (DE-627)DOAJ077834186 (DE-599)DOAJddc07ca4b8c149b79e6f513748b8db60 DE-627 ger DE-627 rakwb eng TC1-978 Juriga Martin verfasserin aut The importance of initial application and reapplication of biochar in the context of soil structure improvement 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not. biochar soil organic matter water-stable aggregates soil structure haplic luvisols Hydraulic engineering Aydın Elena verfasserin aut Horák Ján verfasserin aut Chlpík Juraj verfasserin aut Rizhiya Elena Y. verfasserin aut Buchkina Natalya P. verfasserin aut Balashov Eugene V. verfasserin aut Šimanský Vladimír verfasserin aut In Journal of Hydrology and Hydromechanics Sciendo, 2015 69(2021), 1, Seite 87-97 (DE-627)604801416 (DE-600)2503779-1 13384333 nnns volume:69 year:2021 number:1 pages:87-97 https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 kostenfrei https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/toc/0042-790X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 69 2021 1 87-97
allfieldsSound	10.2478/johh-2020-0044 doi (DE-627)DOAJ077834186 (DE-599)DOAJddc07ca4b8c149b79e6f513748b8db60 DE-627 ger DE-627 rakwb eng TC1-978 Juriga Martin verfasserin aut The importance of initial application and reapplication of biochar in the context of soil structure improvement 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not. biochar soil organic matter water-stable aggregates soil structure haplic luvisols Hydraulic engineering Aydın Elena verfasserin aut Horák Ján verfasserin aut Chlpík Juraj verfasserin aut Rizhiya Elena Y. verfasserin aut Buchkina Natalya P. verfasserin aut Balashov Eugene V. verfasserin aut Šimanský Vladimír verfasserin aut In Journal of Hydrology and Hydromechanics Sciendo, 2015 69(2021), 1, Seite 87-97 (DE-627)604801416 (DE-600)2503779-1 13384333 nnns volume:69 year:2021 number:1 pages:87-97 https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 kostenfrei https://doi.org/10.2478/johh-2020-0044 kostenfrei https://doaj.org/toc/0042-790X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 69 2021 1 87-97
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source	In Journal of Hydrology and Hydromechanics 69(2021), 1, Seite 87-97 volume:69 year:2021 number:1 pages:87-97
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authorswithroles_txt_mv	Juriga Martin @@aut@@ Aydın Elena @@aut@@ Horák Ján @@aut@@ Chlpík Juraj @@aut@@ Rizhiya Elena Y. @@aut@@ Buchkina Natalya P. @@aut@@ Balashov Eugene V. @@aut@@ Šimanský Vladimír @@aut@@
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author	Juriga Martin
spellingShingle	Juriga Martin misc TC1-978 misc biochar misc soil organic matter misc water-stable aggregates misc soil structure misc haplic luvisols misc Hydraulic engineering The importance of initial application and reapplication of biochar in the context of soil structure improvement
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topic_title	TC1-978 The importance of initial application and reapplication of biochar in the context of soil structure improvement biochar soil organic matter water-stable aggregates soil structure haplic luvisols
topic	misc TC1-978 misc biochar misc soil organic matter misc water-stable aggregates misc soil structure misc haplic luvisols misc Hydraulic engineering
topic_unstemmed	misc TC1-978 misc biochar misc soil organic matter misc water-stable aggregates misc soil structure misc haplic luvisols misc Hydraulic engineering
topic_browse	misc TC1-978 misc biochar misc soil organic matter misc water-stable aggregates misc soil structure misc haplic luvisols misc Hydraulic engineering
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title	The importance of initial application and reapplication of biochar in the context of soil structure improvement
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title_full	The importance of initial application and reapplication of biochar in the context of soil structure improvement
author_sort	Juriga Martin
journal	Journal of Hydrology and Hydromechanics
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author_browse	Juriga Martin Aydın Elena Horák Ján Chlpík Juraj Rizhiya Elena Y. Buchkina Natalya P. Balashov Eugene V. Šimanský Vladimír
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doi_str_mv	10.2478/johh-2020-0044
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title_sort	importance of initial application and reapplication of biochar in the context of soil structure improvement
callnumber	TC1-978
title_auth	The importance of initial application and reapplication of biochar in the context of soil structure improvement
abstract	It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not.
abstractGer	It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not.
abstract_unstemmed	It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils and its interaction with nitrogen in relation to water-stable aggregates (WSA) did not receive much attention to date. The aims of the study were: (1) to evaluate the effect of initial application (in spring 2014) and reapplication (in spring 2018) of different biochar rates (B0, B10 and B20 t ha−1) as well as application of biochar with N-fertilizer (40 to 240 kg N ha−1 depending on the requirement of the cultivated crop) on the content of WSA as one of the most important indicators of soil structure quality, (2) to assess the interrelationships between the contents of soil organic matter (SOM) and WSA. The study was conducted in 2017–2019 as part of the field experiment with biochar on Haplic Luvisol at the experimental station of SUA in Nitra, Slovakia. Results showed that initial application as well as reapplication of biochar improved soil structure. The most favorable changes in soil structure were found in N0B20B treatment (with biochar reapplication) at which a significantly higher content of water-stable macro-aggregates (WSAma) (+15%) as well as content of WSAma size fractions of < 5 mm, 5–3 mm, 3–2 mm and 2–1 mm (+72%, +65%, +57% and +64%, respectively) was observed compared to the control. An increase in SOM content, due to both, initial biochar application and its reapplication, significantly supported the stability of soil aggregates, while organic matter including humic substances composition did not.
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title_short	The importance of initial application and reapplication of biochar in the context of soil structure improvement
url	https://doi.org/10.2478/johh-2020-0044 https://doaj.org/article/ddc07ca4b8c149b79e6f513748b8db60 https://doaj.org/toc/0042-790X
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author2	Aydın Elena Horák Ján Chlpík Juraj Rizhiya Elena Y. Buchkina Natalya P. Balashov Eugene V. Šimanský Vladimír
author2Str	Aydın Elena Horák Ján Chlpík Juraj Rizhiya Elena Y. Buchkina Natalya P. Balashov Eugene V. Šimanský Vladimír
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up_date	2024-07-03T14:24:21.421Z
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