Management of sewage sludge and mineral nitrogen in soil fertility over time
The use of sewage sludge is a practice highly promising for the development of sustainable agricultural systems. The objective of this study was to assess the improvement in soil fertility management strategies on different sewage sludge and mineral nitrogen after seven application of this residue....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2013-12-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11805 |
| _version_ | 1818346799071494144 |
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| author | Thomaz Figueiredo Lobo Helio Grassi Filho Leonardo Theodoro Büll Lais Lorena Queiroz Moreira |
| author_facet | Thomaz Figueiredo Lobo Helio Grassi Filho Leonardo Theodoro Büll Lais Lorena Queiroz Moreira |
| author_sort | Thomaz Figueiredo Lobo |
| collection | DOAJ |
| description | The use of sewage sludge is a practice highly promising for the development of sustainable agricultural systems. The objective of this study was to assess the improvement in soil fertility management strategies on different sewage sludge and mineral nitrogen after seven application of this residue. The experiment was carried at the São Manuel Experimental Farm belonging to the faculty of Agronomic Sciences of UNESP, Botucatu, located in the county of São Manuel. It was adopted the experimental design in a randomized blocks consisting of six treatments and five repetitions defined as follows: T0 – without nitrogen fertilizer, T1 – mineral fertilizer nitrogen according to the crop needs, T2 – 50% nitrogen from sewage sludge and 50% in the form of chemical fertilizer, T3 – 100% of nitrogen recommended by the culture, from sewage sludge, T4 - 150% of nitrogen recommended by the culture, from sewage sludge and T5 – 200% of the nitrogen from the sewage sludge. It has done seven application of sewage sludge in crop (year 1 – sunflower, year 2 sunflower, year 3 – oats and bean, year 4 – triticale and sunflower, year 5 – wheat) and the first three applications were treated with sewage sludge and the other applications were composted sludge. In the depth 0-20 cm, the sewage sludge promoted an increase in levels of organic matter, P, S, H+Al, CEC and decreased in soil pH. In the depth of 20 to 40 cm the sewage sludge promoted a decrease in pH and increase in soil organic matter, P, H+Al, K, Ca, SB, CEC and S. Mineral N influence the increase in the depth S of 20-40 cm. |
| first_indexed | 2024-12-13T17:24:00Z |
| format | Article |
| id | doaj.art-a753122530854b87ba5bf2b767621815 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-12-13T17:24:00Z |
| publishDate | 2013-12-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-a753122530854b87ba5bf2b7676218152022-12-21T23:37:15ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592013-12-013462705272610.5433/1679-0359.2013v34n6p2705Management of sewage sludge and mineral nitrogen in soil fertility over timeThomaz Figueiredo Lobo 0Helio Grassi Filho1Leonardo Theodoro Büll 2Lais Lorena Queiroz Moreira 3Universidade Estadual Paulista Julio de Mesquita FilhoUniversidade Estadual Paulista Julio de Mesquita FilhoUniversidade Estadual Paulista Julio de Mesquita FilhoUniversidade Estadual Paulista Julio de Mesquita FilhoThe use of sewage sludge is a practice highly promising for the development of sustainable agricultural systems. The objective of this study was to assess the improvement in soil fertility management strategies on different sewage sludge and mineral nitrogen after seven application of this residue. The experiment was carried at the São Manuel Experimental Farm belonging to the faculty of Agronomic Sciences of UNESP, Botucatu, located in the county of São Manuel. It was adopted the experimental design in a randomized blocks consisting of six treatments and five repetitions defined as follows: T0 – without nitrogen fertilizer, T1 – mineral fertilizer nitrogen according to the crop needs, T2 – 50% nitrogen from sewage sludge and 50% in the form of chemical fertilizer, T3 – 100% of nitrogen recommended by the culture, from sewage sludge, T4 - 150% of nitrogen recommended by the culture, from sewage sludge and T5 – 200% of the nitrogen from the sewage sludge. It has done seven application of sewage sludge in crop (year 1 – sunflower, year 2 sunflower, year 3 – oats and bean, year 4 – triticale and sunflower, year 5 – wheat) and the first three applications were treated with sewage sludge and the other applications were composted sludge. In the depth 0-20 cm, the sewage sludge promoted an increase in levels of organic matter, P, S, H+Al, CEC and decreased in soil pH. In the depth of 20 to 40 cm the sewage sludge promoted a decrease in pH and increase in soil organic matter, P, H+Al, K, Ca, SB, CEC and S. Mineral N influence the increase in the depth S of 20-40 cm.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11805Sustainability; Organic matter and soil acidity. |
| spellingShingle | Thomaz Figueiredo Lobo Helio Grassi Filho Leonardo Theodoro Büll Lais Lorena Queiroz Moreira Management of sewage sludge and mineral nitrogen in soil fertility over time Semina: Ciências Agrárias Sustainability; Organic matter and soil acidity. |
| title | Management of sewage sludge and mineral nitrogen in soil fertility over time |
| title_full | Management of sewage sludge and mineral nitrogen in soil fertility over time |
| title_fullStr | Management of sewage sludge and mineral nitrogen in soil fertility over time |
| title_full_unstemmed | Management of sewage sludge and mineral nitrogen in soil fertility over time |
| title_short | Management of sewage sludge and mineral nitrogen in soil fertility over time |
| title_sort | management of sewage sludge and mineral nitrogen in soil fertility over time |
| topic | Sustainability; Organic matter and soil acidity. |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/11805 |
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