The effect of sandy soil treatment with superabsorbent polymer(0.1,0.2g/kg)on
infiltration rate and shoot and root growth of green pepper at two soil levels (80and
100%)of field capacity was studied.
The results indicate that sandy soil treatment
with polymer (0.1 and 0.2
g/kg)decreased infiltration rate by 41.1 and 50.9% alternatively compared to the control.
Germination rate, plant height ,leaf area, shoot and root dry weight were increased
significantly with polymer treatment compared to the control and mineral fertilization
treatment ,but that difference was not significant among field capacity levels (80and 100%)
Treatments with hydrogel (0.1,0.2g/kg)decreased water need to produce a unity of
shoot dry matter and economized water by 50 and 65%compared to the control.
This study was conducted during the 2011-2012 and 2012-2013 seasons in
Abu-Jarash orchards area in Damascus to identify the effect of improved
organic materials as sludge, manure and compost in improving some soil
physical characteristics and whea
t productivity. Results showed that the three
types of organic material affected the physical characteristics of the studied
soil. They decreased its bulk density, increased its total porosity and increased
its ability of holding water at field capacity. Results also showed that the
compost of city wastes was the best in improving soil physical properties. The
three organic materials, particularly the sludge increased the total productivity
of wheat (Sham3).
Seventh sector is located on the right bank of the Euphrates River at the town of Abu-
Kamal, the Syrian-Iraq border, and its square 18140 hectares. Invest most heavily sector
too, where crops depend on irrigation, irrigation networks mediated cons
isting of earthen
trenches, canals and to pump water by pumps on the banks of the Euphrates.
Research aims to assess the pedelogical properties of agricultural soils by using laboratory
and field tests: leaching speed, permeability, density, porosity, water field capacity, natural
humidity (hygroscopic– wilt limit), so as to contribute in choosing optimal modalities for
irrigation and drainage, and rehabilitation Land affected by salinity and exited the
investment.
The soils of the sector are clay, clayey sand, fine sand, and it has low permeability, low
water field capacity because of sedimentary origin, and the total porosity is low in the
upper part of subsurface soil because of its impaction. There is a relationship between
hygroscopic moisture of soils and its structural composition. The search recommend to
agriculture Fabaceae crops with different roots deep to help improve soil building, and
need to use spray irrigation method to control the water quantity and wetting depth.
