Abstract
Gram pod borer, Helicoverpa armigera (Hubner) is one of the essential insect pests
which inflict heavy crop losses. The performance of pheromone traps against pest in
chickpea field for mass trapping at different heights (2’, 4’ & 6’) was tested at Pulse
section ARI Tando Jam. Each height of trap was replicated three times with
experimental units of nine traps in area of 1080 square feet. The result regarding moth
catches at different height of sex pheromone traps and dates in chickpea field was
observed significantly different. Overall, the highest moth population was in the month
of February (2.67±1.76). A maximum mean number of moths (36.33±5.17) were
observed at 6’ height. The results also showed +ve correlation (r=0.601) between larvae
and moth and with temperature and relative humidity (r=0.420; r=0.480). The pod
damage and larvae were also correlated positively with each other (r=0.820). In
addition, H. armigera was also captured after harvesting time in fellow land that
indicated population of moth also appeared in the absence of host plant but flying ability
of moths reduced and most of moths captured at 4 feet (10 moths). Flight ethology of
moth was recorded during three different periods of the day. Only few moths (0.3-1.3)
captured in day time and most at sunset time (15.3±2.3). Thus, the present results
assumed that the pheromone traps are ideal way to monitor the pest population and such
traps should be installed at 6’ height during cropping season and 4’ after harvesting in
order to control larvae those pupate inside the soil.
Rashid Latif Ujjan, Agha Mushtaque Ahmed, Ali Zachi Abdulqader Alhilfi, Fahad Nazir Khoso, Ali Murad Rahoo, Imran Ali Rajput, Din Muhammad Soomro. (2019) Performance of pheromone traps at different heights for mass trapping of Helicoverpa armigera (Noctuidae: Lepidoptera) in chickpea field, Asian Journal of Agriculture and Biology, Volume 7, Issue 4.
-
Views
706 -
Downloads
75
Article Details
Volume
Issue
Type
Language
