Sobressemeadura de pastos de verão na cultura da soja
The objective of the present study to evaluate the forage production of different methods of sowing annual summer pastures in a crop-livestock integration system. The experiment was carried out in a randomized block design with two treatments (overseeding of annual pastures in soybean culture or sow...
| Autor principal: | Candiotto, Felipe |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2022
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/27233 |
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| Resumo: |
The objective of the present study to evaluate the forage production of different methods of sowing annual summer pastures in a crop-livestock integration system. The experiment was carried out in a randomized block design with two treatments (overseeding of annual pastures in soybean culture or sowing of pastures by no-tillage after soybean harvest) in two agricultural years, using fuor replicates of area in each agricultural year. Canopy height, plant stand, forage mass, accumulation rate, days of pasture use and tiller population density were evaluated. There was an interaction (P<0.05) between agricultural year and sowing method / season for plant height, tiller population density, summer pasture utilization time, forage mass and total forage production. In general, these characteristics were affected by the drought that occurred in the second agricultural year. The canopy height, forage mass and forage production were higher for the pastures highlighted in the first agricultural year, with no difference in the second agricultural year between sowing methods. The days of use of the pasture were longer for those that were outgrown in both agricultural years. Within the first agricultural year, the productive characteristics did not differ between the millet and suction grass pastures, except for the fact that the millet pasture had a larger plant stand until 30 days after its implantation and the Sudan grass pasture had a higher tiller density. The plant stand and the accumulation rate varied independently of the agricultural year and sowing method, being higher in the overhanged pastures and in the first agricultural year. The overlapping of annual summer pastures over soybean crops makes it possible to anticipate the use of pasture, increasing the time of pasture use and the production of forage in agricultural years without the incidence of drought. The ANm 38 millet pasture and BRS Estribo sudan grass have similar productive characteristics. |
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