CE: 1768 CF: cag01218
SCIENTIFIC ARTICLE
Actinomycetes, biological alternative on damping-off affectations caused by Rhizoctonia solani Kühn in common bean
Actinomicetos, alternativa biológica contra la marchitez de las posturas por Rhizoctonia solani Kühn en frijol común
Miriam Díaz-Díaz1, Danieyis Sánchez Hurtado de Mendoza2, René Cupull Santana1, Alexander Bernal Cabrera3, Ricardo Medina Marrero1, Miriam Carballo Bargos3, Milagros García Bernal1 y Mayra Acosta-Suárez4
1 Centro de Bioactivos Químicos. Universidad Central ”Marta Abreu” de Las Villas. Carretera a Camajuaní km 5½, Santa Clara, Villa Clara, Cuba
2 Laboratorio Provincial de Sanidad Vegetal de Villa Clara, Carretera a Maleza km 3½, Santa Clara, Villa Clara, Cuba
3 Departamento de Agronomía, Facultad de Ciencias Agropecuarias, Universidad Central ”Marta Abreu” de Las Villas. Carretera a Camajuaní km 5½, Santa Clara, Villa Clara, Cuba
4 Instituto de Biotecnología de las Plantas. Universidad Central ”Marta Abreu” de Las Villas. Carretera a Camajuaní km 5½, Santa Clara, Villa Clara, Cuba
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ABSTRACT
The effect of seed treatment with the actinomycetes strains EA2 and CB14, and their combination, on damping–off incidence caused by Rhizoctonia solani Kühn in Phaseolus vulgaris L. cv. Velasco largo was evaluated under greenhouse conditions. These strains were compared with Trichoderma harzianum A-34, Celest®Top 312 FS and two controls (positive and negative). Inceptisol sterile and non-sterile soil was used under a completely randomized design. The coating seeds with strains were made using 8 % cassava starch. The incidence of R. solani was determined 21 days after sowing. In non-sterile soil, the lowest incidences caused by R. solani were found with Celest®Top 312 FS, which did not significantly differ from the combination of actinomycete strains CB14 + EA2, but yes with the rest of the treatments. In the sterile soil, the lowest percentages of incidences were obtained with the combination of actinomycete strains (CB14 + EA2).
