Rainfed rice - IRRI books - International Rice Research Institute

To know the intensity of the rat
population and rate of opening of
rat holes per day, observations were
conducted at the ricefields of Sakra
village and Kaul Rice Research
Station, Haryana. At Sakra, 363
holes of Mus species and 32 holes of
Bandicota bengalensis species were
plugged and observed. On the other
hand, 344 holes of Mus species and
84 holes of B. bengalensis species
were plugged and observed at Kaul.
Percentage of rat holes opened per day (Sakra village)
Percentage of rat holes opened per day (Kaul Rice Research Station)
Population fluctuation of rats
Rat Population Dynamics and Management
Although house rats are most common rats, little
information is available on their population fluctuation.
The following is one study on their population and the
data.
Uttar Pradesh
624-1,335 rats per village (average 1,057)
5.7-15.6 rats per house (average 9.8)
0.86-1.76 rats per person (average 1.29)
Villages near N.D. University
985-1,300 rats per village (average 1,171)
20-32.8 rats per house (average 28.6)
1.81-3.54 rats per person (average 2.98)
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