RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER
The present study aimed at assessing the influence of physical properties associated with soil structure on the Srelative index. Two soil conditions under Ficus carica L. cultivation were studied (with or without liquid bovine biofertilizer in the irrigation water), in the 0-0.1 m and 0-0.3 m layers...
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| Format: | Article |
| Language: | English |
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Universidade Federal Rural do Semi-Árido
2018-01-01
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| Series: | Revista Caatinga |
| Online Access: | http://www.redalyc.org/articulo.oa?id=237158160023 |
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| author | THIAGO LEITE DE ALENCAR LUIS FELIPE RODRIGUES DE AQUINO SOUSA ARILENE FRANKLIN CHAVES JAEDSON CLÁUDIO ANUNCIATO MOTA |
| author_facet | THIAGO LEITE DE ALENCAR LUIS FELIPE RODRIGUES DE AQUINO SOUSA ARILENE FRANKLIN CHAVES JAEDSON CLÁUDIO ANUNCIATO MOTA |
| author_sort | THIAGO LEITE DE ALENCAR |
| collection | DOAJ |
| description | The present study aimed at assessing the influence of physical properties associated with soil structure on the Srelative index. Two soil conditions under Ficus carica L. cultivation were studied (with or without liquid bovine biofertilizer in the irrigation water), in the 0-0.1 m and 0-0.3 m layers. Disturbed and undisturbed soil samples were collected from the above-mentioned layers and physical analyzes, pertinent to the study objective, were performed. The response function model was applied to verify how the soil independent physical variables influence on the Srelative index in the 0-0.1 m and 0-0.3 m layers, with 0 and 60% biofertilizer, being combined two to two. Once the response functions were known, the slopes of both functions were compared, being represented by the coefficients β11-β12 and β21-β22. This comparison enabled verifying whether there was an effect of the treatments on the response variable. In addition, the standard error of the difference between coefficients was calculated, and the Student's t-test applied. The method of multiple regression was also used to confirm the effect of the variables on the Srelative index for the 0-0.3 m layer in both treatments. Then, the variables with greater weight were selected by a backward elimination method to estimate the Srelative. The results showed that the Srelative index is strongly influenced by properties of the porous fraction, with total porosity and continuity of pores being of significant influence. Management with liquid bovine biofertilizer results in improvement in the soil structure, with effects measured by the Srelative index. |
| first_indexed | 2024-04-13T23:14:14Z |
| format | Article |
| id | doaj.art-9b23d52315bc4f259612ada13b647f5a |
| institution | Directory Open Access Journal |
| issn | 0100-316X 1983-2125 |
| language | English |
| last_indexed | 2024-04-13T23:14:14Z |
| publishDate | 2018-01-01 |
| publisher | Universidade Federal Rural do Semi-Árido |
| record_format | Article |
| series | Revista Caatinga |
| spelling | doaj.art-9b23d52315bc4f259612ada13b647f5a2022-12-22T02:25:27ZengUniversidade Federal Rural do Semi-ÁridoRevista Caatinga0100-316X1983-21252018-01-0131246647510.1590/1983-21252018v31n223rcRESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZERTHIAGO LEITE DE ALENCARLUIS FELIPE RODRIGUES DE AQUINO SOUSAARILENE FRANKLIN CHAVESJAEDSON CLÁUDIO ANUNCIATO MOTAThe present study aimed at assessing the influence of physical properties associated with soil structure on the Srelative index. Two soil conditions under Ficus carica L. cultivation were studied (with or without liquid bovine biofertilizer in the irrigation water), in the 0-0.1 m and 0-0.3 m layers. Disturbed and undisturbed soil samples were collected from the above-mentioned layers and physical analyzes, pertinent to the study objective, were performed. The response function model was applied to verify how the soil independent physical variables influence on the Srelative index in the 0-0.1 m and 0-0.3 m layers, with 0 and 60% biofertilizer, being combined two to two. Once the response functions were known, the slopes of both functions were compared, being represented by the coefficients β11-β12 and β21-β22. This comparison enabled verifying whether there was an effect of the treatments on the response variable. In addition, the standard error of the difference between coefficients was calculated, and the Student's t-test applied. The method of multiple regression was also used to confirm the effect of the variables on the Srelative index for the 0-0.3 m layer in both treatments. Then, the variables with greater weight were selected by a backward elimination method to estimate the Srelative. The results showed that the Srelative index is strongly influenced by properties of the porous fraction, with total porosity and continuity of pores being of significant influence. Management with liquid bovine biofertilizer results in improvement in the soil structure, with effects measured by the Srelative index.http://www.redalyc.org/articulo.oa?id=237158160023 |
| spellingShingle | THIAGO LEITE DE ALENCAR LUIS FELIPE RODRIGUES DE AQUINO SOUSA ARILENE FRANKLIN CHAVES JAEDSON CLÁUDIO ANUNCIATO MOTA RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER Revista Caatinga |
| title | RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER |
| title_full | RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER |
| title_fullStr | RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER |
| title_full_unstemmed | RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER |
| title_short | RESPONSE FUNCTION FOR THE SRELATIVE INDEX IN CAMBISOL TREATED WITH AND WITHOUT BOVINE LIQUID BIOFERTILIZER |
| title_sort | response function for the srelative index in cambisol treated with and without bovine liquid biofertilizer |
| url | http://www.redalyc.org/articulo.oa?id=237158160023 |
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