Pengaruh Deterjen dalam Peluruhan Lilin dan Mortalitas Kutu Putih, Paracoccus marginatus (Hemiptera: Pseudococcidae)

Abstract

Papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) is one of important pests that can decrease papaya production. An effective control effort to reduce the population of this insect pest is by using insecticides but the excessive and improper uses cause undesirable effect to human and environments. Moreover, detergents can be also used as control agents to this insect pest. The objective of this research was to study the role of detergent in controling the papaya mealybug. Detergents used in this experiment were powder detergent (a.i: sodium dodecyl benzene sulfonate), liquid detergent (a.i: sodium alkyl benzene sulfonate) and cream detergent (a.i: sodium alkylbenzene sulfonate). Each test detergent was sprayed to third instar nymph of P. marginatus with the detergent concentrations of 0.05%, 0.1%, 0.2% and control. Observation of decreasing wax layer was carried out at 1, 2, 3, 4 and 5 days after treatment. Two syntetic insecticides were used in this experiment; profenofos and deltamethrin. The same method was used in testing the syntetic insecticides, both single and the combination treatment of insecticide and liquid detergent. Insect mortality was assessed at 1, 2, 3, 4 and 5 days after treatment. Liquid detergent treatment showed higher activity in causing shed of wax layer than powder and cream detergents with the percentage for each treatment of 64%, 58%, and 48%, respectively.The average of insect mortalities on the treatments of combination of deltamethrin and detergent were higher than the treatment of combination of profenofos and detergents.