Effect of Hot Pepper Plant Extracts on Resistance to Aphids on Okra

Abstract

In order to compared the effect of varieties of hot pepper plant extracts on the population buildup of sucking complex in okra crop at experimental field Al Essa district, Swed, Iraq. The following concentrations of hot pepper extracts in water were prepared (concentrations (%): 1, 3, 5, 7 and 9) and sprayed on the crop. The observations were recorded on population of aphid before and after spraying. The results showed that the efficacy of different hot pepper aqueous extracts against aphids at different treatments for two weeks starting from mid of July 2019. Average reduction in the population of avid were achieved using the highest concentration (9%). The best mortality rates were achieved after the first spray since the average mortality rate was 1.76, in comparison with 0.24 and 0.22, the averages for the second and third spray respectively. Furthermore, there is relationship between the concentration of the hot pepper extract with the total wet shoots, since sig.(2-tailed) p value was less than 0.05.