Physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional de Colombia
2017
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| _version_ | 1876443405083475968 |
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| author | Daniela Schmitz |
| author_facet | Daniela Schmitz |
| contents | Physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil Daniela Schmitz Bruno Salvador Oliveira Paulo Emilio Lovato Milton da Veiga Gustavo Brunetto Pierre Curmi Jucinei José Comin Agrociencias Bulk density aggregate indices penetration resistance principal component analysis chemical desiccation and mowing of weeds The aim of this research was to evaluate the physical attributes of Cambisol in apple ( Malus domestica Borkh. cv. Gala) orchard under different weed management systems in the state of Santa Catarina (SC), Brazil. The treatments were as follows: control (no weed management), chemical desiccation and mowing. We took samples of undisturbed soil at depths of 0-5, 5-10, 10-15 and 15-20 cm. We evaluated hydraulic conductivity (HC); bulk density (BD); soil penetration resistance (Pr); total porosity (TP), macropores (MaP), micropores (MiP); soil aggregation indices such as arithmetic and geometric mean diameter of air-dried and water-stable aggregates (AMDad, AMDws, GMDad, GMDws, respectively); aggregate stability index (ASI AMD and ASI GMD ) and volumetric water content (VWC). We also carried out principal component analysis (PCA) with the data. The mowing or desiccation treatments increased BD at the 15-20 cm depth compared to control. The mowing treatment had the highest ASI GMD while desiccation contributed to the lowest ASI GMD . The desiccation treatment decreased AMDws (0-10 cm), ASI AMD (0-5 cm) GMDws (5-10 cm) and reduced HC by 26% and 22%, respectively, compared to the mowing and control treatments. Through PCA we were able to separate the three treatments. The mowing treatment was correlated with HC, VWC at pressure of 600 kPa and ASI GMD ; desiccation was correlated with BD and Pr; and control with ASI AMD, MaP and TP. 2017 artículo científico 0120-2812 https://www.redalyc.org/articulo.oa?id=169951832017 https://www.redalyc.org/journal/1699/169951832017/ https://www.redalyc.org/journal/1699/169951832017/html/ https://www.redalyc.org/journal/1699/169951832017/169951832017.epub https://www.redalyc.org/journal/1699/169951832017/movil en http://www.redalyc.org/revista.oa?id=1699 Acta Agronómica application/pdf Universidad Nacional de Colombia Acta Agronómica (Colombia) Num.3 Vol.66 |
| format | Artículo científico |
| id | redalyc_169951832017 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil Daniela Schmitz Agrociencias Bulk density aggregate indices penetration resistance principal component analysis chemical desiccation and mowing of weeds Physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil Daniela Schmitz Bruno Salvador Oliveira Paulo Emilio Lovato Milton da Veiga Gustavo Brunetto Pierre Curmi Jucinei José Comin Agrociencias Bulk density aggregate indices penetration resistance principal component analysis chemical desiccation and mowing of weeds The aim of this research was to evaluate the physical attributes of Cambisol in apple ( Malus domestica Borkh. cv. Gala) orchard under different weed management systems in the state of Santa Catarina (SC), Brazil. The treatments were as follows: control (no weed management), chemical desiccation and mowing. We took samples of undisturbed soil at depths of 0-5, 5-10, 10-15 and 15-20 cm. We evaluated hydraulic conductivity (HC); bulk density (BD); soil penetration resistance (Pr); total porosity (TP), macropores (MaP), micropores (MiP); soil aggregation indices such as arithmetic and geometric mean diameter of air-dried and water-stable aggregates (AMDad, AMDws, GMDad, GMDws, respectively); aggregate stability index (ASI AMD and ASI GMD ) and volumetric water content (VWC). We also carried out principal component analysis (PCA) with the data. The mowing or desiccation treatments increased BD at the 15-20 cm depth compared to control. The mowing treatment had the highest ASI GMD while desiccation contributed to the lowest ASI GMD . The desiccation treatment decreased AMDws (0-10 cm), ASI AMD (0-5 cm) GMDws (5-10 cm) and reduced HC by 26% and 22%, respectively, compared to the mowing and control treatments. Through PCA we were able to separate the three treatments. The mowing treatment was correlated with HC, VWC at pressure of 600 kPa and ASI GMD ; desiccation was correlated with BD and Pr; and control with ASI AMD, MaP and TP. 2017 artículo científico 0120-2812 https://www.redalyc.org/articulo.oa?id=169951832017 https://www.redalyc.org/journal/1699/169951832017/ https://www.redalyc.org/journal/1699/169951832017/html/ https://www.redalyc.org/journal/1699/169951832017/169951832017.epub https://www.redalyc.org/journal/1699/169951832017/movil en http://www.redalyc.org/revista.oa?id=1699 Acta Agronómica application/pdf Universidad Nacional de Colombia Acta Agronómica (Colombia) Num.3 Vol.66 |
| title | Physical attributes of Cambisol in apple (Malus domestica Borkh. cv. Gala) orchard under different weed management systems in Urubici- Santa Catarina, Brazil |
| topic | Agrociencias Bulk density aggregate indices penetration resistance principal component analysis chemical desiccation and mowing of weeds |
| url | https://www.redalyc.org/articulo.oa?id=169951832017 https://www.redalyc.org/journal/1699/169951832017/ https://www.redalyc.org/journal/1699/169951832017/html/ https://www.redalyc.org/journal/1699/169951832017/169951832017.epub https://www.redalyc.org/journal/1699/169951832017/movil |