Laboratory and field experiments had been carried out to study survey,
distribution rodent species in field crops (sugar cane and cereal crops) were
selected for this study in Gazert Shandweel villag Sohag district. Population density, distribution and sex ratio of more dominant rodents
(M.musculus and Aniloticus) were studied in Sohag Governorate, in addition to
their body measurements and rodents damage during two successive years
(2000/2001 & 200112002). The obtained results can be summarized as follows: 1- the presented data proved that the house mouse, M.musculus was the dominant
one in sugar cane and cereal crop fields. Followed by Aniloticus and the climb rate
R. rattus. 2- The cereal crops were more suitable for R.rattus than sugar cane while the
oppesite was noticed in the case of M.musculus and A niloticus. 3- Autumn season was the most suitable for Egyptian field rodent species under
Sohage Governorate field conditions followed by summer, winter and spring. 4- Results also illustrated that the house mouse Mus musculus L. was trapped from
cereal crop fields heavier than that from sugar cane crop fields. The males were
caught from cereal crop fields heavier than females but the females caught from
sugar cane crop field heavier than males. 5- Results proved that the variety G.87 -4 7 was the least sensitive one to rodents injury
and the two varieties G.95-19 and G.T. 54-9 were the highest sensitive for rodent
damage. 6- Rodent damage reduced the juce quality for all varieties of sugar cane. 7 - Damage percentage caused by rodent to the wheat crop were 5.7 and 4.1 % during
the two successive years, respectively. 8- Damage percentage caused by rodents to the sorghum crop were 2.9 and 1.9 %
during the two successive years, respectively. Rodent damage was noticed in the
short stem varieties (Dorado variety) and it was nil in long stem varieties during
study.