Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production
The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 un...
Ausführliche Beschreibung
Autor*in: |
Alev Kir [verfasserIn] Barbaros Cetinel [verfasserIn] Didar Sevim [verfasserIn] Feriste Ozturk Gungor [verfasserIn] Francis Rayns [verfasserIn] Dionysios Touliatos [verfasserIn] Ulrich Schmutz [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022 |
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Schlagwörter: |
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Übergeordnetes Werk: |
In: Agronomy - MDPI AG, 2012, 12(2022), 7, p 1712 |
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Übergeordnetes Werk: |
volume:12 ; year:2022 ; number:7, p 1712 |
Links: |
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DOI / URN: |
10.3390/agronomy12071712 |
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Katalog-ID: |
DOAJ033054177 |
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10.3390/agronomy12071712 doi (DE-627)DOAJ033054177 (DE-599)DOAJ2c958c66e8a0437ab7a4d336555392dd DE-627 ger DE-627 rakwb eng Alev Kir verfasserin aut Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. soil pollution copper phase-out alternative input total water-soluble phenol compounds organic horticulture Agriculture S Barbaros Cetinel verfasserin aut Didar Sevim verfasserin aut Feriste Ozturk Gungor verfasserin aut Francis Rayns verfasserin aut Dionysios Touliatos verfasserin aut Ulrich Schmutz verfasserin aut In Agronomy MDPI AG, 2012 12(2022), 7, p 1712 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:12 year:2022 number:7, p 1712 https://doi.org/10.3390/agronomy12071712 kostenfrei https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd kostenfrei https://www.mdpi.com/2073-4395/12/7/1712 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 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_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 7, p 1712 |
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10.3390/agronomy12071712 doi (DE-627)DOAJ033054177 (DE-599)DOAJ2c958c66e8a0437ab7a4d336555392dd DE-627 ger DE-627 rakwb eng Alev Kir verfasserin aut Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. soil pollution copper phase-out alternative input total water-soluble phenol compounds organic horticulture Agriculture S Barbaros Cetinel verfasserin aut Didar Sevim verfasserin aut Feriste Ozturk Gungor verfasserin aut Francis Rayns verfasserin aut Dionysios Touliatos verfasserin aut Ulrich Schmutz verfasserin aut In Agronomy MDPI AG, 2012 12(2022), 7, p 1712 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:12 year:2022 number:7, p 1712 https://doi.org/10.3390/agronomy12071712 kostenfrei https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd kostenfrei https://www.mdpi.com/2073-4395/12/7/1712 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 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_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 7, p 1712 |
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10.3390/agronomy12071712 doi (DE-627)DOAJ033054177 (DE-599)DOAJ2c958c66e8a0437ab7a4d336555392dd DE-627 ger DE-627 rakwb eng Alev Kir verfasserin aut Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. soil pollution copper phase-out alternative input total water-soluble phenol compounds organic horticulture Agriculture S Barbaros Cetinel verfasserin aut Didar Sevim verfasserin aut Feriste Ozturk Gungor verfasserin aut Francis Rayns verfasserin aut Dionysios Touliatos verfasserin aut Ulrich Schmutz verfasserin aut In Agronomy MDPI AG, 2012 12(2022), 7, p 1712 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:12 year:2022 number:7, p 1712 https://doi.org/10.3390/agronomy12071712 kostenfrei https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd kostenfrei https://www.mdpi.com/2073-4395/12/7/1712 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 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_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 7, p 1712 |
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10.3390/agronomy12071712 doi (DE-627)DOAJ033054177 (DE-599)DOAJ2c958c66e8a0437ab7a4d336555392dd DE-627 ger DE-627 rakwb eng Alev Kir verfasserin aut Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. soil pollution copper phase-out alternative input total water-soluble phenol compounds organic horticulture Agriculture S Barbaros Cetinel verfasserin aut Didar Sevim verfasserin aut Feriste Ozturk Gungor verfasserin aut Francis Rayns verfasserin aut Dionysios Touliatos verfasserin aut Ulrich Schmutz verfasserin aut In Agronomy MDPI AG, 2012 12(2022), 7, p 1712 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:12 year:2022 number:7, p 1712 https://doi.org/10.3390/agronomy12071712 kostenfrei https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd kostenfrei https://www.mdpi.com/2073-4395/12/7/1712 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 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_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 7, p 1712 |
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10.3390/agronomy12071712 doi (DE-627)DOAJ033054177 (DE-599)DOAJ2c958c66e8a0437ab7a4d336555392dd DE-627 ger DE-627 rakwb eng Alev Kir verfasserin aut Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. soil pollution copper phase-out alternative input total water-soluble phenol compounds organic horticulture Agriculture S Barbaros Cetinel verfasserin aut Didar Sevim verfasserin aut Feriste Ozturk Gungor verfasserin aut Francis Rayns verfasserin aut Dionysios Touliatos verfasserin aut Ulrich Schmutz verfasserin aut In Agronomy MDPI AG, 2012 12(2022), 7, p 1712 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:12 year:2022 number:7, p 1712 https://doi.org/10.3390/agronomy12071712 kostenfrei https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd kostenfrei https://www.mdpi.com/2073-4395/12/7/1712 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 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_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 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_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2022 7, p 1712 |
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Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production |
abstract |
The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. |
abstractGer |
The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. |
abstract_unstemmed |
The efficacy of soil conditioner (vermicompost tea), fertiliser (potassium silicate), and biological control agents (BCAs) as practical agroecological copper alternatives against olive leaf spot (<i<Spilocaea oleaginea (Cast.) Hughe.</i<) disease was investigated between 2018 and 2021 under organic management in a Mediterranean climate. In total, 9 agroecological alternatives to copper oxychloride (vermicompost tea, potassium silicate, <i<Bacillus subtilis</i< EU 007 WP, <i<Platanus orientalis</i< leaf extract, <i<Mycorrhiza</i< mix, seaweed commercial product, <i<Trichoderma citrinoviride</i< TR1, vermicompost tea+<i<Platanus orientalis</i< mix, <i<Penicillium</i< (Mouldy bread pieces)) were applied to olive trees in a randomised block design with 4 replicationsTotal water soluble phenol compounds (TWSP) were found to be the main bioindicator to assess the alternatives and their potential to phase-out copper application. Results related to TWSP indicated that copper oxychloride (control), potassium silicate and vermicompost tea showed significantly higher content of TWSP as we compared zero application of copper and other treatments. These stimulate the antioxidant capacity in olive fruits and reduce the olive leaf spot disease incidence. The pollution effect of copper was monitored during the trial to identify soil pollution in the organic in-conversion experimental land. The total annual ‘active copper’ application was 4.7 kg.ha<sup<−1</sup<.year<sup<−1</sup< and this is in accordance with the legal organic legislation of Turkey. During the conversion period from conventional to organic management, we determined approximately 50% reduced copper content in the soil 0–30 cm depth samples in 2020 (3.70 mg.kg<sup<−1</sup<) as it is compared to those initial samples (6.43 mg.kg<sup<−1</sup<) in 2018. We conclude that alternatives to copper that are easily accessible, e.g., vermicompost tea, have a potential for use in organic olive production to replace copper in mitigating olive leaf spots. Furthermore, we find that reduced copper application in organic management with the aim to decrease copper accumulation in soil, fruits and leaves was not yet enough to reduce copper to satisfactory levels. We conclude that further research with the aim of a total replacement of copper fungicide treatments in organic and non-organic systems is needed. |
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container_issue |
7, p 1712 |
title_short |
Agroecological Screening of Copper Alternatives for the Conservation of Soil Health in Organic Olive Production |
url |
https://doi.org/10.3390/agronomy12071712 https://doaj.org/article/2c958c66e8a0437ab7a4d336555392dd https://www.mdpi.com/2073-4395/12/7/1712 https://doaj.org/toc/2073-4395 |
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Barbaros Cetinel Didar Sevim Feriste Ozturk Gungor Francis Rayns Dionysios Touliatos Ulrich Schmutz |
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