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VOL. 10, ISSUE 6 (2025)
Seasonal incidence of pod fly, Melanagromyza obtusa (Malloch) on Pigeonpea in relation to abiotic factors
Authors
GD Hadiya, RK Thumar, DB Sisodiya AD Kalola
Abstract
A field experiment was carried out to study
the effect of abiotic factors on seasonal incidence of pod fly, M. obtusa
on pigeonpea at Agricultural Research Station, Anand Agricultural University, Derol
during Kharif, 2022-23 and 2023-24. In 2022–23, maggot population ranged
from 0.05 to 0.92 maggot/pod and peak population was found in the 1st
SMW, while pupal count ranged from 0.24 to 0.85 pupa/pod, with a peak in the 2nd
SMW. Maximum pod (36.00%) and seed damage (44.75%) occurred in the 5th
SMW. Pupal count was significant negative association with maximum temperature
(r = -0.632*) and significant positive association with evening
relative humidity (r = 0.672*).
Pod damage was highly significant negative relationship with evaporation (r
= -0.861**) while, significant
negative association with maximum temperature (r = -0.785*). Seed damage was highly significant positive association with
morning (r = 0.797**) and evening relative humidity (r = 0.762**)
while, highly significant negative relationship with maximum temperature (r =
-0.839**) and evaporation (r = -0.852**). In
2023–24, similar trends were observed, with peak maggot and pupal populations
of 0.97 maggot/pod and 0.71 pupa/pod in the 2nd and 3rd SMW,
respectively. Highest pod (37.67%) and seed damage (46.44%) was recorded in the
5th SMW. The
maggot population showed highly significant negative association with
evaporation (r = -0.820**). However, it has
significantly positive relationship with evening relative humidity (r
= 0.703*) and significant
negatively correlation (r = -0.603* and -0.702*) with maximum temperature and bright sunshine hours, respectively. Pupal
incidence exhibited significant negative correlation with maximum temperature (r
= -0.645*). Highly significant
negative association was observed between pod damage and minimum temperature (r
= -0.861**), while rainfall also exhibited a significant negative
relationship (r = -0.788*). Seed damage highly
significant negative association with minimum temperature (r = -0.820**)
while, significant negative relationship with maximum temperature (r = -0.713**)
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Pages:125-129
How to cite this article:
GD Hadiya, RK Thumar, DB Sisodiya AD Kalola "Seasonal incidence of pod fly, <i>Melanagromyza obtusa</i> (Malloch) on Pigeonpea in relation to abiotic factors". International Journal of Entomology Research, Vol 10, Issue 6, 2025, Pages 125-129
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