Between the months of January and April (summer) of year 2011 a work of field with the aim of describing was realised as the Agrícola company Cerro Prieto S.A.C. comes carrying out the chemical control for the acarus Oligonychus punicae (arañita brown) in the culture from avocado var. Hass, of 1,5 years. The densidad of the orchard was of 666 trees by has. ; with irrigation by dripping. The used products were registered for this culture and the use of each was based on a threshold of action established by the company and its application depended on the percentage (%) and degree (g) of infestation of the acarus. The used products were: a mixture of an agricultural detergent out dust 200 cc/cil + an agricultural oil known commercially like biol 200 cc/cil, used for washings when there is presence of brown arañita and a product with sulphur micronizado with lime, preparation in the denom...