الفهرس 
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Abstract
The Effect of seed-Bed Prepetition on Home Soil
Physical Properties
This work has been carried out to study the effect of different tillage systems on the following:
Soil resistance 1-
2- Influtuation.
3- Soil relief formation and roughness
4- Field capacity for different tillage system
5- Plant stand before harvesting
The experiment was carried out in a plot area of (80 x 50 m) in the experimental station, Faculty of agriculture, Mansoura University.. This area was divided into eight small plots each plot was (80 x 6 m) and the plowing systems used were as follows:
1- Mould-board plow + Chisel plow rotary plow(.P+CH+R)
2- Mould -board plow once (P)
chisel plow followed by rotary plow (Ch + R).
4- Chisel plow once (ch).
5- : Mould -board plow followed by rotary plow (.P + R).
Mould – board plow once (p).-6
7- (;Chisel plow twice followed by rotary plow (Ch2x+ H
Chisel plow twice (Ch2x).-8