Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons
To diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade gra...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Eduem (Editora da Universidade Estadual de Maringá)
2021-03-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/50359 |
| _version_ | 1818924279883890688 |
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| author | André Cayô Cavalcanti Fábio Luiz Partelli Ivoney Gontijo Jairo Rafael Machado Dias Marta Simone Mendonça Freitas Almy Júnior Cordeiro de Carvalho |
| author_facet | André Cayô Cavalcanti Fábio Luiz Partelli Ivoney Gontijo Jairo Rafael Machado Dias Marta Simone Mendonça Freitas Almy Júnior Cordeiro de Carvalho |
| author_sort | André Cayô Cavalcanti |
| collection | DOAJ |
| description | To diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade grass pastures in the rainy and dry seasons. Of a total of 105 sampled pastures, the 20 highest-yielding areas were used to establish reference standards. In the other, low-productivity pastures, the nutritional status was diagnosed in both the rainy and dry seasons for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), boron (B), copper (Cu), iron (Fe), nickel (Ni), molybdenum (Mo), and zinc (Zn). A productivity of 15 tons ha-1 year-1 was determined as the threshold to separate high-yielding (> 15 tons ha-1 year-1) pastures from low-productivity pastures (< 15 tons ha-1 year-1). Sufficiency ranges and foliar DRIS standards were established for palisade grass pastures in the rainy and dry seasons, which resulted in the recommendation of region- and season-specific sufficiency ranges and DRIS leaf standards. In the rainy season, in more than 50% of the evaluated pastures, nutritional deficiencies in all nutrients except K, B and Zn were observed, while in the dry season, only N, P, Cu, and Mn were deficient. |
| first_indexed | 2024-12-20T02:22:49Z |
| format | Article |
| id | doaj.art-f9135211b59d44c89475cea349661366 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-12-20T02:22:49Z |
| publishDate | 2021-03-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-f9135211b59d44c89475cea3496613662022-12-21T19:56:47ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212021-03-0143e50359e5035910.4025/actasciagron.v43i1.5035950359Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasonsAndré Cayô Cavalcanti0Fábio Luiz Partelli1Ivoney Gontijo2Jairo Rafael Machado Dias3Marta Simone Mendonça Freitas4Almy Júnior Cordeiro de Carvalho5Universidade Federal do Espírito SantoUniversidade Federal do Espírito SantoUniversidade Federal do Espírito SantoUniversidade Federal de RondôniaUniversidade Estadual do Norte Fluminense Darcy RibeiroUniversidade Estadual do Norte Fluminense Darcy RibeiroTo diagnose and monitor the nutritional status of commercial crops, reference standards must be established based on chemical analyses of soils and leaf tissues. Therefore, the objective of this study was to establish sufficiency ranges, DRIS standards and leaf nutritional diagnoses for palisade grass pastures in the rainy and dry seasons. Of a total of 105 sampled pastures, the 20 highest-yielding areas were used to establish reference standards. In the other, low-productivity pastures, the nutritional status was diagnosed in both the rainy and dry seasons for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), boron (B), copper (Cu), iron (Fe), nickel (Ni), molybdenum (Mo), and zinc (Zn). A productivity of 15 tons ha-1 year-1 was determined as the threshold to separate high-yielding (> 15 tons ha-1 year-1) pastures from low-productivity pastures (< 15 tons ha-1 year-1). Sufficiency ranges and foliar DRIS standards were established for palisade grass pastures in the rainy and dry seasons, which resulted in the recommendation of region- and season-specific sufficiency ranges and DRIS leaf standards. In the rainy season, in more than 50% of the evaluated pastures, nutritional deficiencies in all nutrients except K, B and Zn were observed, while in the dry season, only N, P, Cu, and Mn were deficient.https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/50359brachiaria; nutritional sufficiency range; dris standards; nutritional diagnosis. |
| spellingShingle | André Cayô Cavalcanti Fábio Luiz Partelli Ivoney Gontijo Jairo Rafael Machado Dias Marta Simone Mendonça Freitas Almy Júnior Cordeiro de Carvalho Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons Acta Scientiarum: Agronomy brachiaria; nutritional sufficiency range; dris standards; nutritional diagnosis. |
| title | Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons |
| title_full | Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons |
| title_fullStr | Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons |
| title_full_unstemmed | Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons |
| title_short | Establishment of leaf nutrient patterns for the nutritional diagnosis of Urochloa brizantha pastures in two seasons |
| title_sort | establishment of leaf nutrient patterns for the nutritional diagnosis of urochloa brizantha pastures in two seasons |
| topic | brachiaria; nutritional sufficiency range; dris standards; nutritional diagnosis. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/50359 |
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