Investigations carried out during the
period from Oktober 1989 to September 1991
showed that the most important insect
species, found infesting the stored
commodities in the Kalyubia Covernorate,
Egypt are: Sitophilus oryzae (L.);
Sitophilus zeamais Motsch.;
(L.); dominica (F.);
Sitotrog, cerealla (Oliv.); Tribolium
castaneum (Hbst.); Callosobruc] maculatus
TVTruchus rufimanus (Boh.);
kuehniella Zell.; QLy’ surinamensis
(L.); L. and Plodia
interpunctella (Hbn.).
The storage period of grains and pulses
varied from 3 to 12 months. Store—rooms
at farmer’s house, mud bins, shounas of
the Principal Bank for Development and
Agricultural Credit (PBDAC), merchant
granaries and maize stored on robs at the
house—roof were the most storage methods
used in the Kalyubia region. These storage
facilities were briefly described.
Infestation rate and loss in weight
of some stored commodities were determined.
Results revealed that the highest
infestation rate was recorded in merchant
granaries, whereby it was 5.74, 4,18 and
8.92% for wheat, maize and broad beans,
respectively, while it was 11% in the store—
rooms and 7.68% in merchant granaries for
cow peas. The lowest infestation rate was
obtained in case of wheat in PdDAC—shounas
(0.37%) and for maize, which stored on cobs
at the house—roof (0.5%).
Loss in weight was in range (0.03—0.77%)
for cereal grains and 1.41—2.81% for grain
pulses.
|
