CE: 1980 CF: cag082202266
Extracts of Pimenta dioica, Callistemon citrinus and Syzygium malaccense on Sitophilus oryzae
Extractos de Pimenta dioica, Callistemon citrinus y Syzygium malaccense sobre Sitophilus oryzae
1 Centro de Estudios para la Transformación Agraria Sostenible (CETAS). Facultad de Ciencias Agrarias, Universidad de Cienfuegos Carlos Rafael Rodríguez, Cuatro Caminos, Carretera a Rodas Km 4, Cienfuegos, Cuba, CP 55100
2 Centro de Investigaciones Agropecuarias, Universidad Central “Marta Abreu” de las Villas, Carretera a Camajuaní km 5½, Santa Clara, Villa Clara, Cuba, CP 54830
3Facultad Química Farmacia, Universidad Central “Marta Abreu” de las Villas, Carretera a Camajuaní km 5½, Santa Clara, Villa Clara, Cuba, CP 54830
4Facultad de Ciencias Agrarias, Universidad de Pamplona, Municipio de Pamplona, Colombia, CP 543050
There are several products that have been used for the control of Sitophilus oryzae L. However, the high resistance of the insect to various chemical products has motivated the search for new alternatives for its control, which led to evaluating the in vitro effect of the extracts from Pimenta dioica (L.) Merr, Callistemon citrinus (Curtis) Skeels and Syzygium malaccense (L.) Merr. & L.M. Perry on S. oryzae. The plant material was ground into particles smaller than 1 mm. The powder obtained was used to obtain extracts through three extraction methods (Soxhlet, assisted extraction with Ultrasound and Maceration), with n-hexane, ethyl acetate and methanol solvents. The yield of the extracts was determined and the biological action on S. oryzae was evaluated by means of the percentage of insect emergency mortality and weight loss. The extracts formed by Soxhlet and n-hexane were more effective in vitro on S. oryzae, but all showed high repellency.