Listar Agronomía Costarricense por autor "Ramírez, Marianyela"
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Effectiveness of formic acid and thymol in the control of Varroa destructor in africanized honey bee colonies
Calderón, Rafael A.; Ramírez, Marianyela; Ramírez, Fernando; Villalobos, Ethel (2014-07-04)The effectiveness of formic acid and thymol in the control of the mite Varroa destructor was evaluated from June to October 2011 in an apiary of 16 Africanized honeybee colonies (the colonies did not receive chemical ...