Alelopatia de Leucena sobre soja e plantas invasoras
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Data
2009-01-01
Autores
Mauli, Marcia Maria
Teixeira Fortes, Andrea Maria
Rosa, Danielle Medina
Piccolo, Gislaine
Marques, Denise Sommer [UNESP]
Corsato, Jaqueline Malagutti [UNESP]
Leszczynski, Raquel
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual de Londrina (UEL)
Resumo
With the advance of agriculture, there was consequent rising in environment degradation. Therefore, It is interesting the use of plants which have in their chemical composition substances capable of helping in the control of weeds to minimize the use of pesticides. Hence, the objective of this paper was to evaluate solutions of leucena extract on weeds that are frequent on soybean crop. The treatments were leucena extracts at 0, 20, 40, 60, 80 and 100% at room temperature water and water heated to 80 degrees C. The extracts were obtained by crushing 200g of leucena leaves and mixing them with one liter of distilled water with the help of a blender. Seeds were kept in B.O.D. at a temperature of 25 degrees C, with a photoperiod of 12 hours of light. Evaluations were done oil a daily basis, from the first to the last day of the experiment, varying according to the species. Results show a negative interference of the extracts, both hot and cold, in the root length of Ipomoea grandifolia, in the percentage of germination and in the root length of Arrowleaf sida and Hair beggarticks. There was no negative interference in the analyzed parameters for soybean seeds. Thus, the results indicate allelopatic potential of Leucaena leuucocephala as an alternative for the management of weeds without interfering on the development of the soybean crop.
Descrição
Palavras-chave
Allelopathy, Leucaena leucocephala, Glycine max
Como citar
Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 30, n. 1, p. 55-62, 2009.