From Eq. (2), it can be deduced that, in APTEEN network
the first node dies lifetime due to energy exhaustion for sensor
nodes powered by AA Alkaline batteries which has energy
storage 9360 J is about 6.5 month, which is a time period much
greater than the lifetime of the potato crop (4 months) in
Egypt, but it is greater than the whole period of its cultivation
yearly. In the same time, from Eq. (3), it can be found that the
lifetime that may be reached by LEACH is about 3 month,
which is smaller than the lifetime reached by APTEEN and
the more important that it is not adequate for the Egyptian potato
crop lifetime. Fig. 6, shows the time duration expected for
consuming a certain amount of node’s energy for APTEEN
and LEACH.