تأثير إضافة المخلفات العضوية في معدل القطر الموزونلتربة الأهوار و نمو و إنتاج الشعير (Hordeumvulgare L.)‎

الملخص EN

An experiment was conducted on the Marsh land at the Al-Nasr irrigation project , Which is located at Al- Mudina district ,Al-Basrahgovernorate.

during winter season 2007/2008, The soil Texture was silty clay.

The aim was to Study the effect of the organic manure on mean weight diameter and growth and productivity of barley .

The research was included addition two levels of organic manure (0 and 1)% according to dry weight of soil fora depth 30 cm .The experiment was carried out in two soil, the first was cultivated and planted annually , whereas the second soil was abandoned for long time without Planting(fallow) .

After the soil had prepared , it was divided into experimental units , of (4 * 10) m.

each the experimental treatments were distributed into three replicates using the factorial complete randomized block design .

These two soils were planted with barley seeds (HordeumVulgare L.) in 21st of November 2007.

The MWD were determined for three depths (0-15) cm, (15-30) cm and (30-60) cm, and for four growth periods including germination, branching (after 70 days) , flowering (after 120 days), and maturity (after 150 days).

The results were appeared that the addition of organic manure at 1%(OM1) caused an increasingat soil aggregate stability (MWD), dry weight and grains weight values in compare with the OM0 treatment for both soil S1& S0.The values were higher in the S1in compare with value of S0 .

In general the value of MWD was increased with the advance of growth periods and decreased with the increasing of Soil depth .