Gomes, Fernanda Melo; Fortes, Andréa Maria Teixeira; Silva, Jéssica da; Bonamigo, Thaliny and Pinto, Tassiane Terezinha (2013) Efeito alelopático da fitomassa de Lupinus angustifolius (L.) sobre a germinação e desenvolvimento inicial de Zea mays (L.) e Bidens pilosa (L.). [Allelopathic effect of the phytomass of Lupinus angustifolius (L.) on germination and early development of Zea mays (L.) and Bidens pilosa (L.).] Revista Brasileira de Agroecologia, 8 (1), pp. 48-56.
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Document available online at: http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/article/view/10630
Summary
O objetivo deste trabalho foi avaliar o efeito alelopático do extrato aquoso de folhas frescas de Lupinus angustifolius L. sobre alface (como planta indicadora), sobre a espécie cultivada milho e a invasora picão-preto. As sementes dessas espécies foram submetidas aos extratos aquosos preparados na proporção de 200g/L (20% p/v) de água destilada e rediluídos nas concentrações de 20% (4% p/v), 40% (8% p/v), 60% (12% p/v), 80% (16% p/v) e 100% (20% p/v), mais um tratamento testemunha com água destilada. Notou-se interferência alelopática negativa em alface e na invasora picão-preto enquanto que para o milho foi observada apenas uma pequena interferência negativa no comprimento médio de raiz, onde a diferença estatística apresenta-se na presença do extrato a 100%. Conclui-se assim que o L. angustifolius possui potencial alelopático e pode ser usado na sucessão de culturas do milho, além de reduzir o desenvolvimento do picão-preto como opção de herbicida natural.
Summary translation
The goal of this work was to evaluate the allelopathic effect of aqueous extract of fresh leaves of Lupinus angustifolius L. on bioindicator species (lettuce), on corn crop species and beggartick as invasive. The seeds of these species were submitted to aqueous extracts prepared in the proportion of 200g/L of distilled water and diluted at concentrations of 20% (4% w/v), 40% (8% w/v), 60% (12% w/v), 80% (16% w/v) e 100% (20% w/v), plus a control with distilled water. It was noted negative allelopathic interference in lettuce and beggartick while for corn was only observed a small negative interference in the average root length, where the statistical difference is present in the extract to 100%. It is concluded that the L. angustifolius has allelopathic potential and can be used in succession crops of corn yield, and also reduce the development of beggartick as option of natural herbicide.
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Aleloquímicos, Fabaceae, Tremoço azul, Extrato vegetal. Allelochemicals, Fabaceae, Blue lupine, Vegetable extract. |
| Agrovoc keywords: | Language Value URI English agroecology http://aims.fao.org/aos/agrovoc/c_92381 English Vegetable extracts http://aims.fao.org/aos/agrovoc/c_14487 English Allelochemicals http://aims.fao.org/aos/agrovoc/c_24960 English Lupinus angustifolius http://aims.fao.org/aos/agrovoc/c_4465 |
| Subjects: | Farming Systems Crop husbandry Farming Systems > Farm nutrient management |
| Research affiliation: | Brazil > Other organizations |
| ISSN: | 1980-9735 |
| Related Links: | http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/index |
| Deposited By: | Pinto, Gabriela Franco |
| ID Code: | 24419 |
| Deposited On: | 26 Dec 2013 12:28 |
| Last Modified: | 26 Dec 2013 12:28 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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