Oxisol subsurface chemical attributes related to sugarcane productivity
In spite of the great homogeneity found in the morphological characteristics of Oxisols, there is great chemical diversity in subsurface layers of these soils. Studies indicate that crop yield presents significant correlation with the chemical attributes of the subsurface, which, are more stable tha...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2003-12-01
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| Series: | Scientia Agricola |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400020&tlng=en |
| _version_ | 1818975002685341696 |
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| author | Marcos Guimarães de Andrade Landell Hélio do Prado Antônio Carlos Machado de Vasconcelos Dilermando Perecin Raffaella Rossetto Márcio Aurélio Pitta Bidoia Marcelo de Almeida Silva Mauro Alexandre Xavier |
| author_facet | Marcos Guimarães de Andrade Landell Hélio do Prado Antônio Carlos Machado de Vasconcelos Dilermando Perecin Raffaella Rossetto Márcio Aurélio Pitta Bidoia Marcelo de Almeida Silva Mauro Alexandre Xavier |
| author_sort | Marcos Guimarães de Andrade Landell |
| collection | DOAJ |
| description | In spite of the great homogeneity found in the morphological characteristics of Oxisols, there is great chemical diversity in subsurface layers of these soils. Studies indicate that crop yield presents significant correlation with the chemical attributes of the subsurface, which, are more stable than attributes found in the plough layer, subject to greater alterations as a consequence of agricultural exploration. This work evaluated the effects of subsurface chemical attributes of Oxisols of the South Central region of Brazil, on the yield of sugarcane clones and of variety RB72454, during the first, second and third cropping cycles. Productivity data were obtained between 1993 and 1998. Soils were characterized in terms of their mechanical analysis and chemical traits at 0.8 to 1.0 m; correlation studies between these attributes and mean daily productivity as well as multiple regression analysis were also carried out; variables were selected based on their R² values by means of the stepwise procedure. The subsurface chemical traits of the Oxisols influenced sugarcane productivity, especially the 3rd harvest; the clone productivity model for the 3rd harvest as a function of base saturation and phosphorus content presented R² = 0.31, i.e., 31% of the variation in sugarcane yield (t ha-1 day-1) can be explained by these two attributes. For variety RB72454, 47% of that variation is explained by the sum of bases and contents of calcium and organic matter. Variations on productivity at 1st and 2nd harvests can be better explained by pHwater. |
| first_indexed | 2024-12-20T15:49:02Z |
| format | Article |
| id | doaj.art-ad2f08b0d90c47cf9dc4214461d22c01 |
| institution | Directory Open Access Journal |
| issn | 1678-992X |
| language | English |
| last_indexed | 2024-12-20T15:49:02Z |
| publishDate | 2003-12-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-ad2f08b0d90c47cf9dc4214461d22c012022-12-21T19:34:46ZengUniversidade de São PauloScientia Agricola1678-992X2003-12-01604741745Oxisol subsurface chemical attributes related to sugarcane productivityMarcos Guimarães de Andrade Landell0Hélio do Prado1Antônio Carlos Machado de Vasconcelos2Dilermando Perecin3Raffaella Rossetto4Márcio Aurélio Pitta Bidoia5Marcelo de Almeida Silva6Mauro Alexandre Xavier7Agência Paulista de Tecnologia dos AgronegóciosAgência Paulista de Tecnologia dos AgronegóciosAgência Paulista de Tecnologia dos AgronegóciosUniversidade Estadual PaulistaAgência Paulista de Tecnologia dos AgronegóciosAgência Paulista de Tecnologia dos AgronegóciosAgência Paulista de Tecnologia dos AgronegóciosAgência Paulista de Tecnologia dos AgronegóciosIn spite of the great homogeneity found in the morphological characteristics of Oxisols, there is great chemical diversity in subsurface layers of these soils. Studies indicate that crop yield presents significant correlation with the chemical attributes of the subsurface, which, are more stable than attributes found in the plough layer, subject to greater alterations as a consequence of agricultural exploration. This work evaluated the effects of subsurface chemical attributes of Oxisols of the South Central region of Brazil, on the yield of sugarcane clones and of variety RB72454, during the first, second and third cropping cycles. Productivity data were obtained between 1993 and 1998. Soils were characterized in terms of their mechanical analysis and chemical traits at 0.8 to 1.0 m; correlation studies between these attributes and mean daily productivity as well as multiple regression analysis were also carried out; variables were selected based on their R² values by means of the stepwise procedure. The subsurface chemical traits of the Oxisols influenced sugarcane productivity, especially the 3rd harvest; the clone productivity model for the 3rd harvest as a function of base saturation and phosphorus content presented R² = 0.31, i.e., 31% of the variation in sugarcane yield (t ha-1 day-1) can be explained by these two attributes. For variety RB72454, 47% of that variation is explained by the sum of bases and contents of calcium and organic matter. Variations on productivity at 1st and 2nd harvests can be better explained by pHwater.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400020&tlng=enyieldsoilslinear modelschemical analysis |
| spellingShingle | Marcos Guimarães de Andrade Landell Hélio do Prado Antônio Carlos Machado de Vasconcelos Dilermando Perecin Raffaella Rossetto Márcio Aurélio Pitta Bidoia Marcelo de Almeida Silva Mauro Alexandre Xavier Oxisol subsurface chemical attributes related to sugarcane productivity Scientia Agricola yield soils linear models chemical analysis |
| title | Oxisol subsurface chemical attributes related to sugarcane productivity |
| title_full | Oxisol subsurface chemical attributes related to sugarcane productivity |
| title_fullStr | Oxisol subsurface chemical attributes related to sugarcane productivity |
| title_full_unstemmed | Oxisol subsurface chemical attributes related to sugarcane productivity |
| title_short | Oxisol subsurface chemical attributes related to sugarcane productivity |
| title_sort | oxisol subsurface chemical attributes related to sugarcane productivity |
| topic | yield soils linear models chemical analysis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400020&tlng=en |
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