Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities
ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of t...
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| Format: | Article |
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Sociedade Brasileira de Ciência do Solo
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100512&lng=en&tlng=en |
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| author | Joice Mari Assmann Amanda Posselt Martins Ibanor Anghinoni Sergio Ely Valadão Gigante de Andrade Costa Alan Joseph Franzluebbers Paulo César de Faccio Carvalho Francine Damian da Silva Álvaro Araujo Costa |
| author_facet | Joice Mari Assmann Amanda Posselt Martins Ibanor Anghinoni Sergio Ely Valadão Gigante de Andrade Costa Alan Joseph Franzluebbers Paulo César de Faccio Carvalho Francine Damian da Silva Álvaro Araujo Costa |
| author_sort | Joice Mari Assmann |
| collection | DOAJ |
| description | ABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on Ca and Mg release from pasture, dung, and soybean residues in a long-term no-till integrated soybean-cattle system. The experiment was established in May 2001 in a Latossolo Vermelho Distroférrico (Rhodic Hapludox). Treatments were a gradient of grazing intensity, determined by managing a black oat + Italian ryegrass pasture at 10, 20, 30, and 40 cm grazing height and no-grazing (NG), followed by soybean cropping. Ca and Mg release rates were determined in two entire cycles (2009/11). Moderate grazing (20 and 30 cm sward height) led to greater Ca and Mg release rates from pasture and dung residues, with low average half-life values (13 and 3 days for Ca and 16 and 6 days for Mg for pasture and dung, respectively). Grazing compared with NG resulted in greater Ca and Mg release from pasture and dung residues. Grazing intensity did not affect Ca and Mg release rates or amounts from soybean residues, but Ca and Mg release rates were greater from soybean leaves than from stems. Although moderate grazing intensities produce higher quality residues and higher calcium and magnesium release rates, a higher total nutrient amount is released by light grazing intensity and no-grazing, determined by higher residue production. Grazing intensity is, then, important for nutrient dynamics in the soil-plant-animal continuum. |
| first_indexed | 2024-12-16T14:38:05Z |
| format | Article |
| id | doaj.art-223c00814cff4c30ad639bc64658f8d4 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-16T14:38:05Z |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-223c00814cff4c30ad639bc64658f8d42022-12-21T22:28:02ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-965741010.1590/18069657rbcs20160330S0100-06832017000100512Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing IntensitiesJoice Mari AssmannAmanda Posselt MartinsIbanor AnghinoniSergio Ely Valadão Gigante de Andrade CostaAlan Joseph FranzluebbersPaulo César de Faccio CarvalhoFrancine Damian da SilvaÁlvaro Araujo CostaABSTRACT Under integrated crop-livestock production systems (ICLS), plant and animal residues are important nutrient stocks for plant growth. Grazing management, by affecting the numbers of both plants and animals and the quality of residues, will influence nutrient release rates. The objective of this study was to evaluate the impact of grazing intensity on Ca and Mg release from pasture, dung, and soybean residues in a long-term no-till integrated soybean-cattle system. The experiment was established in May 2001 in a Latossolo Vermelho Distroférrico (Rhodic Hapludox). Treatments were a gradient of grazing intensity, determined by managing a black oat + Italian ryegrass pasture at 10, 20, 30, and 40 cm grazing height and no-grazing (NG), followed by soybean cropping. Ca and Mg release rates were determined in two entire cycles (2009/11). Moderate grazing (20 and 30 cm sward height) led to greater Ca and Mg release rates from pasture and dung residues, with low average half-life values (13 and 3 days for Ca and 16 and 6 days for Mg for pasture and dung, respectively). Grazing compared with NG resulted in greater Ca and Mg release from pasture and dung residues. Grazing intensity did not affect Ca and Mg release rates or amounts from soybean residues, but Ca and Mg release rates were greater from soybean leaves than from stems. Although moderate grazing intensities produce higher quality residues and higher calcium and magnesium release rates, a higher total nutrient amount is released by light grazing intensity and no-grazing, determined by higher residue production. Grazing intensity is, then, important for nutrient dynamics in the soil-plant-animal continuum.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100512&lng=en&tlng=enmixed pastureanimal residuehalf-life timenutrient cycling |
| spellingShingle | Joice Mari Assmann Amanda Posselt Martins Ibanor Anghinoni Sergio Ely Valadão Gigante de Andrade Costa Alan Joseph Franzluebbers Paulo César de Faccio Carvalho Francine Damian da Silva Álvaro Araujo Costa Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities Revista Brasileira de Ciência do Solo mixed pasture animal residue half-life time nutrient cycling |
| title | Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities |
| title_full | Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities |
| title_fullStr | Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities |
| title_full_unstemmed | Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities |
| title_short | Calcium and Magnesium Released from Residues in an Integrated Crop-Livestock System under Different Grazing Intensities |
| title_sort | calcium and magnesium released from residues in an integrated crop livestock system under different grazing intensities |
| topic | mixed pasture animal residue half-life time nutrient cycling |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100512&lng=en&tlng=en |
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