Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse
When deposited on land the vinasse can promote improvement in fertility, however, often fertilizer application occurs in areas considered homogeneous, without taking into account the variability of the soil. The objective of this study was to evaluate the effect of vinasse application on potassium c...
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| Format: | Article |
| Language: | English |
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Academia Brasileira de Ciências
2014-12-01
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| Series: | Anais da Academia Brasileira de Ciências |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401999&lng=en&tlng=en |
| _version_ | 1818482026269900800 |
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| author | LAÉRCIO A. DE CARVALHO ISMAEL MEURER CARLOS A. DA SILVA JUNIOR CRISTIANE F.B. SANTOS PAULO L. LIBARDI |
| author_facet | LAÉRCIO A. DE CARVALHO ISMAEL MEURER CARLOS A. DA SILVA JUNIOR CRISTIANE F.B. SANTOS PAULO L. LIBARDI |
| author_sort | LAÉRCIO A. DE CARVALHO |
| collection | DOAJ |
| description | When deposited on land the vinasse can promote improvement in fertility, however, often fertilizer application occurs in areas considered homogeneous, without taking into account the variability of the soil. The objective of this study was to evaluate the effect of vinasse application on potassium content in two classes of soils cultivated with sugarcane, and characterize the spatial variability of soil using geostatistical techniques. In the 2010 and 2011 crop year, soil samples were collected from an experimental grid at 0-0.2 and 0.2-0.4 m depth in three soils cultivated with sugarcane, totaling 90 samplings in each grid, for the determination of pH, calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), aluminum (Al) and potential acidity (H + Al). The data have been submitted to analysis of descriptive statistics and the K attribute was subjected to geostatistical analysis. The coefficient of variation indicated medium and high variability of K for the three soils. The results showed that the spatial dependence of K increased in depth to FRce and decreased to PHlv, indicating that the attribute could have followed the pattern of distribution of clay in depth. The investigation of the spatial variability of K on the surface and subsurface soils provided the definition of management zones with different levels of fertility, which can be organized into sub-areas for a more efficient management of the resources and the environment. |
| first_indexed | 2024-12-10T11:42:49Z |
| format | Article |
| id | doaj.art-61239827e25b48399c11f9030fead05b |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-12-10T11:42:49Z |
| publishDate | 2014-12-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-61239827e25b48399c11f9030fead05b2022-12-22T01:50:11ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902014-12-018641999201210.1590/0001-3765201420130319S0001-37652014000401999Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasseLAÉRCIO A. DE CARVALHOISMAEL MEURERCARLOS A. DA SILVA JUNIORCRISTIANE F.B. SANTOSPAULO L. LIBARDIWhen deposited on land the vinasse can promote improvement in fertility, however, often fertilizer application occurs in areas considered homogeneous, without taking into account the variability of the soil. The objective of this study was to evaluate the effect of vinasse application on potassium content in two classes of soils cultivated with sugarcane, and characterize the spatial variability of soil using geostatistical techniques. In the 2010 and 2011 crop year, soil samples were collected from an experimental grid at 0-0.2 and 0.2-0.4 m depth in three soils cultivated with sugarcane, totaling 90 samplings in each grid, for the determination of pH, calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), aluminum (Al) and potential acidity (H + Al). The data have been submitted to analysis of descriptive statistics and the K attribute was subjected to geostatistical analysis. The coefficient of variation indicated medium and high variability of K for the three soils. The results showed that the spatial dependence of K increased in depth to FRce and decreased to PHlv, indicating that the attribute could have followed the pattern of distribution of clay in depth. The investigation of the spatial variability of K on the surface and subsurface soils provided the definition of management zones with different levels of fertility, which can be organized into sub-areas for a more efficient management of the resources and the environment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401999&lng=en&tlng=enGeoestatísticaSaccharum officinarumsemivariogramafertilidade do solo |
| spellingShingle | LAÉRCIO A. DE CARVALHO ISMAEL MEURER CARLOS A. DA SILVA JUNIOR CRISTIANE F.B. SANTOS PAULO L. LIBARDI Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse Anais da Academia Brasileira de Ciências Geoestatística Saccharum officinarum semivariograma fertilidade do solo |
| title | Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| title_full | Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| title_fullStr | Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| title_full_unstemmed | Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| title_short | Spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| title_sort | spatial variability of soil potassium in sugarcane areas subjected to the application of vinasse |
| topic | Geoestatística Saccharum officinarum semivariograma fertilidade do solo |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401999&lng=en&tlng=en |
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