Bio Efficacy of Different Acaricide Spray Schedules Against the Mite Population in Okra

Abstract

The present study was tested for their efficacy against mites in okra and their efficacy was compared with control (untreated).Our results revealed that all the acaricides tested were effective to control mite population in okra and after 15 days of 1^st and 2^nd spray, Oberon (Bayer) resulted in the highest efficacy of 94.52 and 98.01 percent, respectively with the overall average efficacy of 96.27 percent. Nova Star (FMC) ranked 2^nd in effectiveness with 91.00 and 92.20 percent efficacy after 15 days of 1^st and 2^nd sprays, respectively averaging 91.60 percent; while the efficacy of Polo (Syngenta) was 75.32 and 79.16 percent averaging 77.24 percent, Galit (Kanzo) displayed efficacy of 75.03 and 78.74 percent averaging 76.89 percent and the efficacy of Moral after 15 days of 1^st and 2^nd spray was 73.58 and 77.21 percent averaging 75.40 percent, respectively. The highest amount of additional income Rs. 46171 ha^-1 was achieved from the plots sprayed with Oberon acaricide against mites; followed by an additional income of Rs. 32723 ha^-1, Rs. 30507 ha^-1 and Rs. 20710 ha^-1 realized from the plots sprayed with Nova Star, Polo, Galit, and Mortal, respectively over control; while the lowest additional income of Rs. 19255 ha^-1 was realized from the plots as compared to income of Rs. 121715 ha^-1 from plots sprayed with acaricide Mortal as compared to control.

Keywords: Okra, effectiveness, mites, acaricides