EFFECTIVENESS OF PLANT EXTRACTS FOR THE CONTROL OF RED MITE (Raoiella indica HIRTS) IN THE COCONUT TREE (Cocos nucífera L.)

• DOI: https://doi.org/10.22533/at.ed.973452403048

• Palavras-chave: biológico, mortalidad, CL50, concentración, ácaro.

• Keywords: biological, mortality, CL50, concentration, mite.

• Abstract:

  Worldwide, the cultivation of Cocos nucifera is cultivated in 92 countries, Mexico occupies ninth place, with the state of Guerrero being the first place nationally. However, its economic production is affected by pests and diseases, one of them is Raoiella indica, its only means of control being chemical insecticides that contribute to the environmental crisis. In this work, the concentration-lethality of 3 biological and two chemical extracts on R. indica was compared, as well as the LC50 for each of the products. These products were applied by spraying, using the Burgerjon tower, directly on adult females of R. indica, placed on leaflet discs 5 cm in diameter. Mortality was recorded at 24, 48 and 72 hours. At all these times, Abamectin showed the lowest LC50 values, which means the highest toxicity; In decreasing order of toxicity, Asphix, Saf-T-Side, Spiridiclofen and Biodie followed. The LC50 of Neem Higuer, Neem Canela and Bio-Piretrin were not estimated because in the preliminary bioassays it was observed that they have minimal toxicity. The use of Asphix is preferably recommended for the control of R. indica, due to its low price compared to Abamectin, as well as its status as a biorational product.