الفهرس 
Effect of tillage and fertilizers on invertebrate soil fauna in Egypt and Kenya
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Abstract
The experiment was conducted at village of El- Marazeeq-Giza Governorate
during the period between September 2014 and October 2015. The area was
cultivated with tomato and rotation with cultivated maize and between two
cultivated leave the land fallow. This study is to investigate the effect of crop type,
crop rotation, tillage, fertilizer and crap type on the activity density of soil fauna.
Ground-dwelling invertebrates were sampled using pitfall traps. This
experiment continued for 13 months, ten pitfall traps were distributed in each plot
of the mentioned field, cultivated with different cover crop and when its fallow
samples were taken at every two weeks intervals from each cultivation and fallow,
samples were taken by setting the traps for 24 hours.
Forty – seven species were sampled from 1103 individuals. The highest
abundance was found under maize growing conditions (533 individuals), the
number decreased to (357) under tomato and the lowest abundance values were
found in fallow (213individuals).
Fauna were classified into the five main functional group, herbivores
(agricultural potential pests) accounted for 9.16 %, detrivores (Responsible for
soil fertility) detrivores are the most abundant group recorded 57.12 %, carnivores
predators groups, recorded 30.55 % and represented by true spiders (predators of
pests), parasitoids and pollen grain transmitters recorded by 1.09 %.
This study indicated that, not only fallow land, ploughing, fertilizer, crop
residues but also type of plant root exudate also effected on the individual activity
density.