Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system
Abstract: The objective of this work was to evaluate the residual effects of occasional soil tillage in a 17-year-old, no-tillage system, associated with liming and nitrogen fertilization, on the crop yields and chemical properties of a very clayey Oxisol in the South of Brazil. A randomized complet...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Embrapa Informação Tecnológica
2018-07-01
|
| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700833&tlng=en |
| _version_ | 1818988053450981376 |
|---|---|
| author | Renato Yagi |
| author_facet | Renato Yagi |
| author_sort | Renato Yagi |
| collection | DOAJ |
| description | Abstract: The objective of this work was to evaluate the residual effects of occasional soil tillage in a 17-year-old, no-tillage system, associated with liming and nitrogen fertilization, on the crop yields and chemical properties of a very clayey Oxisol in the South of Brazil. A randomized complete block design in split-split plots was used, with two soil managements (with or without plowing), two liming treatments (with or without the required dose to raise base saturation to 70%), five N doses applied on side-dress (0, 1, 2, 4, and 6 times the recommended amounts), and four replicates. A rotation system was used with corn and soybean in the summer, and with wheat and black oats in the winter. The residual effects of occasional soil tillage in a consolidated no-tillage system do not supplant those of liming applied on soil surface, in periods of water deficit, which subsidizes the recommendation to maintain the system consolidated. Excess N fertilization in no-tillage, with liming applied only on soil surface, may harm wheat yield, acidifying the topsoil and leaching Mg2+ to the subsurface soil layers. Without liming, soil acidification is more intense with N fertilization, which, however, favors the accumulation of organic matter on soil surface in a consolidated no-tillage system. |
| first_indexed | 2024-12-20T19:16:28Z |
| format | Article |
| id | doaj.art-24ff04b1d45e4dc08aa844869567f65f |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-12-20T19:16:28Z |
| publishDate | 2018-07-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-24ff04b1d45e4dc08aa844869567f65f2022-12-21T19:29:06ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212018-07-0153783383910.1590/s0100-204x2018000700007Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage systemRenato YagiAbstract: The objective of this work was to evaluate the residual effects of occasional soil tillage in a 17-year-old, no-tillage system, associated with liming and nitrogen fertilization, on the crop yields and chemical properties of a very clayey Oxisol in the South of Brazil. A randomized complete block design in split-split plots was used, with two soil managements (with or without plowing), two liming treatments (with or without the required dose to raise base saturation to 70%), five N doses applied on side-dress (0, 1, 2, 4, and 6 times the recommended amounts), and four replicates. A rotation system was used with corn and soybean in the summer, and with wheat and black oats in the winter. The residual effects of occasional soil tillage in a consolidated no-tillage system do not supplant those of liming applied on soil surface, in periods of water deficit, which subsidizes the recommendation to maintain the system consolidated. Excess N fertilization in no-tillage, with liming applied only on soil surface, may harm wheat yield, acidifying the topsoil and leaching Mg2+ to the subsurface soil layers. Without liming, soil acidification is more intense with N fertilization, which, however, favors the accumulation of organic matter on soil surface in a consolidated no-tillage system.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700833&tlng=enconsolidated no-tillage systemsoil aciditysoil managementsoil organic mattersuperficial limingwater deficit |
| spellingShingle | Renato Yagi Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system Pesquisa Agropecuária Brasileira consolidated no-tillage system soil acidity soil management soil organic matter superficial liming water deficit |
| title | Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system |
| title_full | Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system |
| title_fullStr | Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system |
| title_full_unstemmed | Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system |
| title_short | Occasional soil tillage, liming, and nitrogen fertilization on long-term no-tillage system |
| title_sort | occasional soil tillage liming and nitrogen fertilization on long term no tillage system |
| topic | consolidated no-tillage system soil acidity soil management soil organic matter superficial liming water deficit |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000700833&tlng=en |
| work_keys_str_mv | AT renatoyagi occasionalsoiltillagelimingandnitrogenfertilizationonlongtermnotillagesystem |