Field evaluation of certain insecticidal sprays against mango leaf-hoppers.
Nachiappan R. M., Baskaran P.
Author Affiliation: Div. Entomology, Fac. Agric., Annamalai Univ., Annamalainagar, 608?002, Tamil Nadu, India.
Pesticides 20 : 41-44
Abstract : The efficacy of 0.04 and 0.08% phosalone, 0.035% endosulfan, 0.1% carbaryl, 0.05 and 0.1% phenthoate, 0.1% fenitrothion, 0.02% monocrotophos, 0.05% quinalphos and 0.1% phosphamidon against the cicadellids Amritodus atkinsoni, Idioscopus niveosparsus and I. clypealis on mango was evaluated in 3 field trials in Tamil Nadu, India, in 1976. The insecticides were sprayed one week after flowering and again 14 days later. Endosulfan was the most effective treatment in reducing populations of the pests and increasing the retention and yield of fruits. Fruit retention and yield in plots treated with phenthoate and 0.08% phosalone were comparable to those in plots treated with endosulfan. Carbaryl reduced the populations of the pests considerably, but fruit retention and yield were not as high.