<b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity
This work had as objectives to use the Sunn Hemp (Crotalaria juncea L.) to evaluate the residual effect in the soil of levels of water salinity and nitrogen doses, and the occurrence of spatial dependence within the experimental area. In previous years, the experimental area received six consecutive...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2015-10-01
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| Series: | Acta Scientiarum: Technology |
| Subjects: | |
| Online Access: | http://186.233.154.254/ojs/index.php/ActaSciTechnol/article/view/27279 |
| _version_ | 1818749493973090304 |
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| author | Pedro Ramualyson Fernandes Sampaio Neyton de Oliveira Miranda José Francismar de Medeiros Jefferson Vieira José José Flaviano Barbosa de Lira Joana D’arc Jales de Mendonça |
| author_facet | Pedro Ramualyson Fernandes Sampaio Neyton de Oliveira Miranda José Francismar de Medeiros Jefferson Vieira José José Flaviano Barbosa de Lira Joana D’arc Jales de Mendonça |
| author_sort | Pedro Ramualyson Fernandes Sampaio |
| collection | DOAJ |
| description | This work had as objectives to use the Sunn Hemp (Crotalaria juncea L.) to evaluate the residual effect in the soil of levels of water salinity and nitrogen doses, and the occurrence of spatial dependence within the experimental area. In previous years, the experimental area received six consecutive trials, which tested different levels of nitrogen and water salinity on different crops. The same experimental design was applied to this trial, that is, a randomized block design with split-plots (5 x 3), corresponding to the residual effect of water salinity and nitrogen, and four replications. The variables determined were: the plant height on six dates after the sowing, and the dry mass of the shoot, root and the whole plant. The data were firstly subjected to the variance analysis of the residual effects and to the study of spatial variability through geostatistics. The variance analysis did not show significant residual effects of the levels of salinity and nitrogen doses in the soil on the height and dry mass of Sunn Hemp. It was observed a spatial dependence, from moderate to high, in all dates, for height and dry mass of Sunn Hemp. |
| first_indexed | 2024-12-18T04:04:40Z |
| format | Article |
| id | doaj.art-d5216306647840e684aa65b527b8f299 |
| institution | Directory Open Access Journal |
| issn | 1806-2563 1807-8664 |
| language | English |
| last_indexed | 2024-12-18T04:04:40Z |
| publishDate | 2015-10-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Technology |
| spelling | doaj.art-d5216306647840e684aa65b527b8f2992022-12-21T21:21:36ZengUniversidade Estadual de MaringáActa Scientiarum: Technology1806-25631807-86642015-10-0137431332210.4025/actascitechnol.v37i4.2727912756<b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinityPedro Ramualyson Fernandes Sampaio0Neyton de Oliveira Miranda1José Francismar de Medeiros2Jefferson Vieira José3José Flaviano Barbosa de Lira4Joana D’arc Jales de Mendonça5Universidade de São Paulo,Universidade Federal Rural do Semi-ÁridoUniversidade Federal Rural do Semi-ÁridoUniversidade de São PauloUniversidade Federal Rural do Semi-ÁridoUniversidade Federal Rural do Semi-ÁridoThis work had as objectives to use the Sunn Hemp (Crotalaria juncea L.) to evaluate the residual effect in the soil of levels of water salinity and nitrogen doses, and the occurrence of spatial dependence within the experimental area. In previous years, the experimental area received six consecutive trials, which tested different levels of nitrogen and water salinity on different crops. The same experimental design was applied to this trial, that is, a randomized block design with split-plots (5 x 3), corresponding to the residual effect of water salinity and nitrogen, and four replications. The variables determined were: the plant height on six dates after the sowing, and the dry mass of the shoot, root and the whole plant. The data were firstly subjected to the variance analysis of the residual effects and to the study of spatial variability through geostatistics. The variance analysis did not show significant residual effects of the levels of salinity and nitrogen doses in the soil on the height and dry mass of Sunn Hemp. It was observed a spatial dependence, from moderate to high, in all dates, for height and dry mass of Sunn Hemp.http://186.233.154.254/ojs/index.php/ActaSciTechnol/article/view/27279green manuringspatial dependencegeostatisticssustainability. |
| spellingShingle | Pedro Ramualyson Fernandes Sampaio Neyton de Oliveira Miranda José Francismar de Medeiros Jefferson Vieira José José Flaviano Barbosa de Lira Joana D’arc Jales de Mendonça <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity Acta Scientiarum: Technology green manuring spatial dependence geostatistics sustainability. |
| title | <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| title_full | <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| title_fullStr | <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| title_full_unstemmed | <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| title_short | <b>Spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| title_sort | b spatial variability of sunn hemp under residual effect of nitrogen and water salinity |
| topic | green manuring spatial dependence geostatistics sustainability. |
| url | http://186.233.154.254/ojs/index.php/ActaSciTechnol/article/view/27279 |
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