Population dynamics of Polyphagotarsonemus latus (Banks) (Acari: Tarsonemidae) in jute, Corchorus olitorius L. under natural condition

Abstract :

Broad mite, Polyphagotarsonemus latus (Banks, 1904) is one of the major destructive pests of jute causing an economic loss of 10.00 - 42.00% depending on the level of infestation. This experiment was conducted at three jute growing seasons (2018- 2020) in experimental field of Bangladesh Jute Research Institute, Dhaka to observe the population dynamics of mite at different weather parameters. The broad mite population gradually increases with low rainfall and high temperature and above 70% relative humidity. Mite population was highest at 60- 90 DAS in jute plants. Early sowing is very susceptible to mite infestation than those of late sowing crops. Morning and evening period of days showed lowest mite population than that of noon period of the days. No. of mite population per cm2 leaf area was increased up to 90 DAS with the increasing jute plant height. Mites prefer to start the proliferation on first five apical leaves followed by second and third five apical leaves. Mites prefer to populate on lower surface of jute leaves than that of upper surface of jute leaves. The chronology of mite population per cmleaf was 30DAS<45DAS<120DAS<60DAS<90DAS; first five apical leaves > second five apical leaves > third five apical leaves; noon>morning>evening; lower leaf surface>upper leaf surface and 20th March>30th March>10th April. Yellow mite shows noteworthy discrepancy in its prevalence with different plant stages, period of days, date of sowing, leaf and its surface area and weather conditions.

Keyword :

Corchorus olitorius, Polyphagotarsonemus latus, Pearson correlation, weather parameters

Author(s) : Rahman, Md. S., Islam, Md. N., Polan, M. S.
Downloads : 33
Published Issue : 2023 Vol. 18 Number 1

2023 Vol. 18 Number 1