Table 1 Monthly distribution of meteorological parameters and insect population buildup in betel leaf during January to December 2018
From: Sustainable management approach for sucking pests control in betel leaf of Bangladesh
Observation Month | Average temperature (°C) | Relative humidity (%) | Average rainfall (mm) | Mean no. of insect population/vine | |||
|---|---|---|---|---|---|---|---|
Black fly | White fly | Red mite | Mealy bug | ||||
January 2018 | 18.1 | 81.5 | 9 | 3.2 | 2.8 | 2.6 | 1.5 |
February 2018 | 22.5 | 78.7 | 0 | 5.6 | 4.8 | 4.6 | 3.5 |
March 2018 | 26.6 | 76.3 | 0 | 8.3 | 7.4 | 7.1 | 6.0 |
April 2018 | 30.4 | 75.9 | 0 | 15.8 | 12.9 | 11.9 | 10.7 |
May 2018 | 31.2 | 74.5 | 127 | 20.5 | 16.8 | 15.8 | 13.7 |
June 2018 | 29.8 | 85.5 | 430 | 15.2 | 11.7 | 10.7 | 9.6 |
July 2018 | 29.6 | 85.1 | 550 | 12.2 | 6.6 | 6.4 | 5.3 |
August 2018 | 29.3 | 87.9 | 292 | 10.5 | 2.5 | 2.3 | 1.2 |
September 2018 | 28.8 | 84.3 | 208 | 12.2 | 9.3 | 8.3 | 7.2 |
October 2018 | 28.1 | 81.4 | 198 | 22.7 | 17.2 | 16.1 | 14 |
November 2018 | 25.6 | 81.6 | 0 | 18.2 | 14.3 | 13.3 | 11.2 |
December 2018 | 19.9 | 83.2 | 0 | 4.6 | 3.6 | 3.4 | 2.3 |