Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application
The quantity and quality of wall rocket (<i>Diplotaxis tenuifolia</i> L.) production are strongly influenced by the cultivation system, in particular the protected environment conditions and nitrogen fertilization. In the present research, we tested two greenhouse cover films (Film1: dif...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/8/2/138 |
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| author | Ida Di Mola Lucia Ottaiano Eugenio Cozzolino Christophe El-Nakhel Massimo Rippa Pasquale Mormile Giandomenico Corrado Youssef Rouphael Mauro Mori |
| author_facet | Ida Di Mola Lucia Ottaiano Eugenio Cozzolino Christophe El-Nakhel Massimo Rippa Pasquale Mormile Giandomenico Corrado Youssef Rouphael Mauro Mori |
| author_sort | Ida Di Mola |
| collection | DOAJ |
| description | The quantity and quality of wall rocket (<i>Diplotaxis tenuifolia</i> L.) production are strongly influenced by the cultivation system, in particular the protected environment conditions and nitrogen fertilization. In the present research, we tested two greenhouse cover films (Film1: diffuse light; Film2: clear), to verify the effects on yield and nitrate content (a detrimental factor of quality) of rocket leaves, fertilized with optimal (N2) or sub-optimal nitrogen dose (N1), or unfertilized (N0). In addition, we combined the N fertilization with a biostimulant application, declared by the manufacturer as able to reduce nitrate content. Film1 provided a 36% yield increase over Film2 and allowed an increasing production until the V harvest, opposite to what was recorded under Film2, where the yield increased only until the III harvest. Additionally, biostimulant application boosted the yield (+40%), as well as nitrogen fertilization. Both factors had the best performance under Film1, where N1 yield was even equal to N2-Film2. The nitrate content showed a seasonal trend (lower values in spring harvests) and it was boosted by nitrogen (1096, 3696, and 4963 mg/kg fresh weight, for N0, N1, and N2, respectively) and biostimulant application (3924 vs. 2580 mg/kg fresh weight). Therefore, the use of diffuse-light film seems useful to obtain higher yield with a halved N dose as well as in combination with biostimulant application, but the latter did not confirm the capacity to contain nitrate, at least for this crop and in this cultivation system. |
| first_indexed | 2024-03-09T21:47:53Z |
| format | Article |
| id | doaj.art-56fdcdfd49094e3f8811b902c44b78cd |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T21:47:53Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-56fdcdfd49094e3f8811b902c44b78cd2023-11-23T20:12:16ZengMDPI AGHorticulturae2311-75242022-02-018213810.3390/horticulturae8020138Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant ApplicationIda Di Mola0Lucia Ottaiano1Eugenio Cozzolino2Christophe El-Nakhel3Massimo Rippa4Pasquale Mormile5Giandomenico Corrado6Youssef Rouphael7Mauro Mori8Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyDepartment of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyCouncil for Agricultural Research and Economics (CREA)—Research Center for Cereal and Industrial Crops, 81100 Caserta, ItalyDepartment of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyInstitute of Applied Science and Intelligent Systems of National Research Council (ISASI-CNR), 80078 Pozzuoli, ItalyInstitute of Applied Science and Intelligent Systems of National Research Council (ISASI-CNR), 80078 Pozzuoli, ItalyDepartment of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyDepartment of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyDepartment of Agricultural Sciences, University of Naples Federico II, 80055 Portici, ItalyThe quantity and quality of wall rocket (<i>Diplotaxis tenuifolia</i> L.) production are strongly influenced by the cultivation system, in particular the protected environment conditions and nitrogen fertilization. In the present research, we tested two greenhouse cover films (Film1: diffuse light; Film2: clear), to verify the effects on yield and nitrate content (a detrimental factor of quality) of rocket leaves, fertilized with optimal (N2) or sub-optimal nitrogen dose (N1), or unfertilized (N0). In addition, we combined the N fertilization with a biostimulant application, declared by the manufacturer as able to reduce nitrate content. Film1 provided a 36% yield increase over Film2 and allowed an increasing production until the V harvest, opposite to what was recorded under Film2, where the yield increased only until the III harvest. Additionally, biostimulant application boosted the yield (+40%), as well as nitrogen fertilization. Both factors had the best performance under Film1, where N1 yield was even equal to N2-Film2. The nitrate content showed a seasonal trend (lower values in spring harvests) and it was boosted by nitrogen (1096, 3696, and 4963 mg/kg fresh weight, for N0, N1, and N2, respectively) and biostimulant application (3924 vs. 2580 mg/kg fresh weight). Therefore, the use of diffuse-light film seems useful to obtain higher yield with a halved N dose as well as in combination with biostimulant application, but the latter did not confirm the capacity to contain nitrate, at least for this crop and in this cultivation system.https://www.mdpi.com/2311-7524/8/2/138<i>Diplotaxis tenuifolia</i> L.greenhouse conditionsplastic films propertiesnitrogen ratesnon-microbial biostimulantNO<sub>3</sub> |
| spellingShingle | Ida Di Mola Lucia Ottaiano Eugenio Cozzolino Christophe El-Nakhel Massimo Rippa Pasquale Mormile Giandomenico Corrado Youssef Rouphael Mauro Mori Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application Horticulturae <i>Diplotaxis tenuifolia</i> L. greenhouse conditions plastic films properties nitrogen rates non-microbial biostimulant NO<sub>3</sub> |
| title | Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application |
| title_full | Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application |
| title_fullStr | Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application |
| title_full_unstemmed | Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application |
| title_short | Assessment of Yield and Nitrate Content of Wall Rocket Grown under Diffuse-Light- or Clear-Plastic Films and Subjected to Different Nitrogen Fertilization Levels and Biostimulant Application |
| title_sort | assessment of yield and nitrate content of wall rocket grown under diffuse light or clear plastic films and subjected to different nitrogen fertilization levels and biostimulant application |
| topic | <i>Diplotaxis tenuifolia</i> L. greenhouse conditions plastic films properties nitrogen rates non-microbial biostimulant NO<sub>3</sub> |
| url | https://www.mdpi.com/2311-7524/8/2/138 |
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