Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops
In the present study, in addition to farmyard manure (FYM), cowpea was applied as green manure and faba bean as an intercrop in an organic greenhouse tomato crop, aiming to increase the levels of soil N. Three experiments (E1, E2, E3) were carried out, in which legumes were either noninoculated or i...
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doaj-7185086cf3ce485a987bbd84fdef5bb92021-04-02T05:58:47ZengMDPI AGAgronomy2073-43952019-11-0191176610.3390/agronomy9110766agronomy9110766Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or IntercropsAnastasios Gatsios0Georgia Ntatsi1Luisella Celi2Daniel Said-Pullicino3Anastasia Tampakaki4Ioannis Giannakou5Dimitrios Savvas6Laboratory of Vegetable Crops, Department of Crop Science, Agricultural University of Athens, 11855 Athens, GreeceLaboratory of Vegetable Crops, Department of Crop Science, Agricultural University of Athens, 11855 Athens, GreeceDepartment of Agricultural, Forest and Food Sciences, University of Torino, 10095 Grugliasco (TO), ItalyDepartment of Agricultural, Forest and Food Sciences, University of Torino, 10095 Grugliasco (TO), ItalyDepartment of Crop Science, Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, 11855 Athens, GreeceDepartment of Crop Science, Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 11855 Athens, GreeceLaboratory of Vegetable Crops, Department of Crop Science, Agricultural University of Athens, 11855 Athens, GreeceIn the present study, in addition to farmyard manure (FYM), cowpea was applied as green manure and faba bean as an intercrop in an organic greenhouse tomato crop, aiming to increase the levels of soil N. Three experiments (E1, E2, E3) were carried out, in which legumes were either noninoculated or inoculated with rhizobia alone or together with plant growth, promoting rhizobacteria. Inoculation of legumes with rhizobia considerably increased N<sub>2</sub> fixation in E1 but had no impact on N<sub>2</sub> fixation in E2 and E3. In E1, the application of cowpea decreased yield because it imposed a stronger nematode infection as the cowpea plants acted as a good host for <i>Meloidogyne</i>. However, in E2 and E3 the nematode infection was successfully controlled and the legumes significantly increased the tomato yield when inoculated in E2, irrespective of legume inoculation in E3. The total N concentration in the tomato plant tissues was significantly increased by legume application in E2 and E3, but not in E1. These results show that legumes applied as green manure can successfully complement N supply via FYM in organic greenhouse tomato, while legume inoculation with rhizobia can increase the amounts of nitrogen provided to the crop via green manure.https://www.mdpi.com/2073-4395/9/11/766cowpeafaba beanbnforganicrhizobiapgprroot-knot nematodes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anastasios Gatsios Georgia Ntatsi Luisella Celi Daniel Said-Pullicino Anastasia Tampakaki Ioannis Giannakou Dimitrios Savvas |
spellingShingle |
Anastasios Gatsios Georgia Ntatsi Luisella Celi Daniel Said-Pullicino Anastasia Tampakaki Ioannis Giannakou Dimitrios Savvas Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops Agronomy cowpea faba bean bnf organic rhizobia pgpr root-knot nematodes |
author_facet |
Anastasios Gatsios Georgia Ntatsi Luisella Celi Daniel Said-Pullicino Anastasia Tampakaki Ioannis Giannakou Dimitrios Savvas |
author_sort |
Anastasios Gatsios |
title |
Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops |
title_short |
Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops |
title_full |
Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops |
title_fullStr |
Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops |
title_full_unstemmed |
Nitrogen Nutrition Optimization in Organic Greenhouse Tomato Through the Use of Legume Plants as Green Manure or Intercrops |
title_sort |
nitrogen nutrition optimization in organic greenhouse tomato through the use of legume plants as green manure or intercrops |
publisher |
MDPI AG |
series |
Agronomy |
issn |
2073-4395 |
publishDate |
2019-11-01 |
description |
In the present study, in addition to farmyard manure (FYM), cowpea was applied as green manure and faba bean as an intercrop in an organic greenhouse tomato crop, aiming to increase the levels of soil N. Three experiments (E1, E2, E3) were carried out, in which legumes were either noninoculated or inoculated with rhizobia alone or together with plant growth, promoting rhizobacteria. Inoculation of legumes with rhizobia considerably increased N<sub>2</sub> fixation in E1 but had no impact on N<sub>2</sub> fixation in E2 and E3. In E1, the application of cowpea decreased yield because it imposed a stronger nematode infection as the cowpea plants acted as a good host for <i>Meloidogyne</i>. However, in E2 and E3 the nematode infection was successfully controlled and the legumes significantly increased the tomato yield when inoculated in E2, irrespective of legume inoculation in E3. The total N concentration in the tomato plant tissues was significantly increased by legume application in E2 and E3, but not in E1. These results show that legumes applied as green manure can successfully complement N supply via FYM in organic greenhouse tomato, while legume inoculation with rhizobia can increase the amounts of nitrogen provided to the crop via green manure. |
topic |
cowpea faba bean bnf organic rhizobia pgpr root-knot nematodes |
url |
https://www.mdpi.com/2073-4395/9/11/766 |
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