Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun
The objective of this study is to identify qualitative and productive changes in Mombasa grass under a livestock-forest system or full sun and to classify the variables that are most relevant for evaluating the qualitative performance of these systems. The experiments were conducted in shade areas,...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2018-08-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/30405 |
| _version_ | 1811295301470781440 |
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| author | Leonardo Bernardes Taverny de Oliveira Antonio Clementino dos Santos Hugo Mariano Rodrigues de Oliveira Tiago Barbalho André Durval Nolasco das Neves Neto Otacílio Silveira Júnior |
| author_facet | Leonardo Bernardes Taverny de Oliveira Antonio Clementino dos Santos Hugo Mariano Rodrigues de Oliveira Tiago Barbalho André Durval Nolasco das Neves Neto Otacílio Silveira Júnior |
| author_sort | Leonardo Bernardes Taverny de Oliveira |
| collection | DOAJ |
| description | The objective of this study is to identify qualitative and productive changes in Mombasa grass under a livestock-forest system or full sun and to classify the variables that are most relevant for evaluating the qualitative performance of these systems. The experiments were conducted in shade areas, with four replications for each of the 12 treatments, including four growth cycles and three levels of shading in Mombasa grass, totaling 48 experimental units. Calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), nitrogen (N) and dry mass production (DMP) (kg ha-1) were used as discriminatory variables for the shading groups. The levels of nutrients and shading in Mombaça grass were classified using Fisher multivariate discriminant analysis (FMDA). The FDMA indicated that Mg, K, P, N, and DMP formed a discriminant function. However, DMP was the least important variable for identifying the groups. Five groups were pre-defined before FDMA: MFS 2 (Mombasa grass in full sun in the second cycle), MFS 6 (Mombasa grass in full sun in the sixth cycle), MFS 7 (Mombasa grass in full sun in the seventh cycle), M25 4 (Mombasa grass at 25% shading in the fourth cycle), and M25 7 (Mombasa grass at 25% shading in the seventh cycle). The results indicate that Mg, P, K, and N are helpful for identifying new genotypes of plants grown on shading conditions because of the responsiveness and stability of these elements to environmental changes. |
| first_indexed | 2024-04-13T05:31:14Z |
| format | Article |
| id | doaj.art-72789470a00c4579b7860619d44dab72 |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-04-13T05:31:14Z |
| publishDate | 2018-08-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-72789470a00c4579b7860619d44dab722022-12-22T03:00:26ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592018-08-013941447145810.5433/1679-0359.2018v39n4p144717601Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sunLeonardo Bernardes Taverny de Oliveira0Antonio Clementino dos Santos1Hugo Mariano Rodrigues de Oliveira2Tiago Barbalho André3Durval Nolasco das Neves Neto4Otacílio Silveira Júnior5Universidade Federal do TocantinsUniversidade Federal do TocantinsInstituo Tocantinense Presidente Antônio CarlosInstituo Tocantinense Presidente Antônio CarlosInstituo Tocantinense Presidente Antônio CarlosInstituto Federal do TocantinsThe objective of this study is to identify qualitative and productive changes in Mombasa grass under a livestock-forest system or full sun and to classify the variables that are most relevant for evaluating the qualitative performance of these systems. The experiments were conducted in shade areas, with four replications for each of the 12 treatments, including four growth cycles and three levels of shading in Mombasa grass, totaling 48 experimental units. Calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), nitrogen (N) and dry mass production (DMP) (kg ha-1) were used as discriminatory variables for the shading groups. The levels of nutrients and shading in Mombaça grass were classified using Fisher multivariate discriminant analysis (FMDA). The FDMA indicated that Mg, K, P, N, and DMP formed a discriminant function. However, DMP was the least important variable for identifying the groups. Five groups were pre-defined before FDMA: MFS 2 (Mombasa grass in full sun in the second cycle), MFS 6 (Mombasa grass in full sun in the sixth cycle), MFS 7 (Mombasa grass in full sun in the seventh cycle), M25 4 (Mombasa grass at 25% shading in the fourth cycle), and M25 7 (Mombasa grass at 25% shading in the seventh cycle). The results indicate that Mg, P, K, and N are helpful for identifying new genotypes of plants grown on shading conditions because of the responsiveness and stability of these elements to environmental changes.http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/30405CiclosMacronutrientesMultivariadaPanicum maximum. |
| spellingShingle | Leonardo Bernardes Taverny de Oliveira Antonio Clementino dos Santos Hugo Mariano Rodrigues de Oliveira Tiago Barbalho André Durval Nolasco das Neves Neto Otacílio Silveira Júnior Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun Semina: Ciências Agrárias Ciclos Macronutrientes Multivariada Panicum maximum. |
| title | Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun |
| title_full | Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun |
| title_fullStr | Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun |
| title_full_unstemmed | Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun |
| title_short | Characteristics and classification of the quality and productive standards of the mombaça grass under a livestock-forest system or full sun |
| title_sort | characteristics and classification of the quality and productive standards of the mombaca grass under a livestock forest system or full sun |
| topic | Ciclos Macronutrientes Multivariada Panicum maximum. |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/30405 |
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