Organic substrates and formononetin for Leucaena leucocephala saplings

Djalma Silva Pereira, Gilca dos Santos Veloso, Rafaela Simão Abrahão Nóbrega, Altemar dos Santos Dias, Audrey Ferreira Barbosa, Júlio César Azevedo Nóbrega

Resumo


To obtain quality saplings it is necessary to consider the requirements the plants have for a balanced nutriente intake. These can be made available from organic waste which, in many cases, is simple to acquire and can be recycled easily. Consequently, the current study evaluated the potential of organic substrates and formononetin for the production of Leucaena leucocephala seedlings. Experiments were carried out in
a greenhouse, using a fully randomized experimental design, in a factorial arrangement (5 x 2), with five soil proportions: organic compound (100: 0, 80:20, 60:40, 40:60, 20 : 80) and two doses (0 and 1.0 mg per seed) of the isoflavonoid formononetine (7-hydroxy-4’-methoxy-isoflavone, Myconate®). After 60 days of sowing, shoot height, stem diameter, shoot height ratio, shoot diameter, number of nodules, aerial dry mass (ADM), root dry
mass (RDM), total dry matter and Dickson Quality Index (DQI) of the Leucaena leucocephala seedlings were evaluated. Formononetin positively influenced dry root and total dry mass production, and the Dickson Quality Index of Leucaena leucocephala seedlings. A substrate with 46% soil and 54% organic compound gave the
highest seedling DQI, this thereforee being the recommended proportions for this specieds during the initial growth phase.

Palavras-chave


Composto de lixo urbano. Isoflavonóide. Resíduos de Agave sisalana.

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DOI: http://dx.doi.org/10.18227/1982-8470ragro.v13i0.5366

Direitos autorais 2019 REVISTA AGRO@MBIENTE ON-LINE

Revista Agroambiente On-line ISSN 1982-8470 (online), www.agroambiente.ufrr.br. E-mail: agroambiente@ufrr.br. Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição-SemDerivações-SemDerivados 3.0 Brasil.