Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities
The objective of this study was to evaluate the effect of different levels of nitrogen supply and plants densities in the productivity of mombasa guineagrass (Panicum maximum) in the period of establishment. The design was of completely randomized blocks, with 12 treatments and three repetitions, wi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Zootecnia
2012-05-01
|
| Series: | Revista Brasileira de Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500006 |
| _version_ | 1819237056144998400 |
|---|---|
| author | Vinícius Valim Pereira Dilermando Miranda da Fonseca Janaina Azevedo Martuscello Paulo Roberto Cecon Márcia Vitória Santos Thiago Gomes dos Santos Braz |
| author_facet | Vinícius Valim Pereira Dilermando Miranda da Fonseca Janaina Azevedo Martuscello Paulo Roberto Cecon Márcia Vitória Santos Thiago Gomes dos Santos Braz |
| author_sort | Vinícius Valim Pereira |
| collection | DOAJ |
| description | The objective of this study was to evaluate the effect of different levels of nitrogen supply and plants densities in the productivity of mombasa guineagrass (Panicum maximum) in the period of establishment. The design was of completely randomized blocks, with 12 treatments and three repetitions, with four nitrogen supplies (absence of application, 80, 160 and 320 kg/ha.year) and three plant densities (9, 25 and 49 plants/m²). The plot was cut at 30 cm from the ground when the sward high intercepted 95% of light. The following items were evaluated: sward height at 95% light interception, interval and number of cuts, dry mass production, total dry mass of leaves, stems and dead material and the morphologic composition. Nitrogen increased the dry mass production and the dry mass of stem in winter and summer, and decreased in the fall. The total dry mass of leaf presented decrease of 19% in the summer between the smallest and biggest densities in the 320 kg/ha. The dry mass of dead material had negative effect of the density in the fall. The leaf percentage increased 88% between the smallest and largest nitrogen level at the plant density of 49 plants/m². Only density influenced the sward height in the condition of 95% of light interception. The number of cuts increased with nitrogen levels in the fall, spring and summer, while the interval of cuts decreased with fertilization in the spring and summer. Nitrogen increases the production of mombasa guineagrass in each cycle. |
| first_indexed | 2024-12-23T13:14:15Z |
| format | Article |
| id | doaj.art-c08c3116330342628ca6e5efe683a24d |
| institution | Directory Open Access Journal |
| issn | 1516-3598 1806-9290 |
| language | English |
| last_indexed | 2024-12-23T13:14:15Z |
| publishDate | 2012-05-01 |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-c08c3116330342628ca6e5efe683a24d2022-12-21T17:45:39ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1516-35981806-92902012-05-014151118112610.1590/S1516-35982012000500006Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densitiesVinícius Valim PereiraDilermando Miranda da FonsecaJanaina Azevedo MartuscelloPaulo Roberto CeconMárcia Vitória SantosThiago Gomes dos Santos BrazThe objective of this study was to evaluate the effect of different levels of nitrogen supply and plants densities in the productivity of mombasa guineagrass (Panicum maximum) in the period of establishment. The design was of completely randomized blocks, with 12 treatments and three repetitions, with four nitrogen supplies (absence of application, 80, 160 and 320 kg/ha.year) and three plant densities (9, 25 and 49 plants/m²). The plot was cut at 30 cm from the ground when the sward high intercepted 95% of light. The following items were evaluated: sward height at 95% light interception, interval and number of cuts, dry mass production, total dry mass of leaves, stems and dead material and the morphologic composition. Nitrogen increased the dry mass production and the dry mass of stem in winter and summer, and decreased in the fall. The total dry mass of leaf presented decrease of 19% in the summer between the smallest and biggest densities in the 320 kg/ha. The dry mass of dead material had negative effect of the density in the fall. The leaf percentage increased 88% between the smallest and largest nitrogen level at the plant density of 49 plants/m². Only density influenced the sward height in the condition of 95% of light interception. The number of cuts increased with nitrogen levels in the fall, spring and summer, while the interval of cuts decreased with fertilization in the spring and summer. Nitrogen increases the production of mombasa guineagrass in each cycle.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500006heightlight interceptionproductivity |
| spellingShingle | Vinícius Valim Pereira Dilermando Miranda da Fonseca Janaina Azevedo Martuscello Paulo Roberto Cecon Márcia Vitória Santos Thiago Gomes dos Santos Braz Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities Revista Brasileira de Zootecnia height light interception productivity |
| title | Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| title_full | Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| title_fullStr | Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| title_full_unstemmed | Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| title_short | Biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| title_sort | biomass accumulation in mombasa guineagrass plants under different levels of nitrogen supply and plant densities |
| topic | height light interception productivity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500006 |
| work_keys_str_mv | AT viniciusvalimpereira biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities AT dilermandomirandadafonseca biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities AT janainaazevedomartuscello biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities AT paulorobertocecon biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities AT marciavitoriasantos biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities AT thiagogomesdossantosbraz biomassaccumulationinmombasaguineagrassplantsunderdifferentlevelsofnitrogensupplyandplantdensities |