Gomes, Donato Sangiacomo; Bevilaqua, Natalia Cunha; Silva, Felipe Barreto and Monquero, Patrícia Andrea (2014) Supressão de plantas espontâneas pelo uso de cobertura vegetal de crotalária e sorgo. [Weed suppression by sunn hemp and sorghum cover crop.] Revista Brasileira de Agroecologia, 9 (2), pp. 206-213.
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Document available online at: http://www.aba-agroecologia.org.br/revistas/index.php/rbagroecologia/article/view/15333/10200
Summary in the original language of the document
O objetivo deste trabalho foi avaliar o efeito dos adubos verdes na supressão de plantas espontâneas. O experimento foi instalado no Centro de Ciências Agrárias/UFSCar, Araras, São Paulo, em delineamento experimental de blocos ao acaso, sendo utilizados crotalária (Crotalaria spectabilis) e sorgo forrageiro (Sorghum bicolor) e dois manejos da fitomassa (incorporado e superficial), com quatro repetições. Foram obtidos os índices de valor de importância (IVI) das plantas espontâneas aos 15, 30 e 45 dias após o corte da fitomassa (DAC). Para crotalária incorporada, as espécies Ipomoea triloba (corda de viola), Euphorbia heterophylla (amendoim bravo) e Cenchrus echinatus (capim carrapicho) apresentaram alto IVI. No manejo em que a fitomassa da crotalária ficou em superfície, Cyperus rotundus (tiririca) se destacou, quanto ao IVI. No manejo com sorgo, a planta C. echinatus aos 15 DAC apresentou o IVI no manejo incorporado de 83,8 e em superfície foi zero. Já para C. rotundus, a incorporação da fitomassa resultou em menor IVI. Concluiu-se que a utilização de adubos verdes na supressão das plantas espontâneas, depende das espécies espontâneas e de adubos verdes e do manejo da fitomassa..
Summary translation
The objective of this study was to evaluate the effect of green manure on weed suppression. The experiment was conducted at the Center for Agricultural Sciences / UFSCar, Araras, São Paulo, in randomized complete blocks using the species Crotalaria (Crotalaria spectabilis) and sorghum (Sorghum bicolor) and two management (corporate and superficial) with four replications. The importance value index (IVI) of spontaneous plants were obtained at 15, 30 and 45 days after cutting the biomass (DAC). To Crotalaria spectabilis incorporated the species Ipomoea triloba, Euphorbia heterophylla and C. echinatus showed high IVI. To crotalaria with the biomass at in surface, Cyperus rotundus was highlighted as the IVI. The treatment with Sorghum bicolor at 15 DAC, C. echinatus presented the IVI of 83.8 (biomass incorporated) and zero when the biomass was kept in the surface. As for C. rotundus, the biomass kept on the surface was not effective for suppression. It was concluded that although the green manures can be used in weed suppression, this depends on the weeds and green manure species, kind of management and amount of biomass.
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Adubo verde, Manejo de plantas, Crotalária, Sorgo. Green manure, Management plants, Crotalaria, Sorghum. |
| Agrovoc keywords: | Language Value URI English Agroecology http://aims.fao.org/aos/agrovoc/c_92381 English Green manure http://aims.fao.org/aos/agrovoc/c_3375 English Crotalaria http://aims.fao.org/aos/agrovoc/c_1977 English Sorghum http://aims.fao.org/aos/agrovoc/c_7244 |
| Subjects: | Crop husbandry > Production systems > Pasture and forage crops Farming Systems Crop husbandry |
| Research affiliation: | Brazil > Other organizations Brazil |
| ISSN: | 1980-9735 |
| Related Links: | http://www.aba-agroecologia.org.br/revistas/index.php/rbagroecologia/index |
| Deposited By: | Pinto, Gabriela Franco |
| ID Code: | 27403 |
| Deposited On: | 31 Mar 2015 15:22 |
| Last Modified: | 31 Mar 2015 15:22 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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