The Study of Corn Cobs and Gypsum Adding In Some Physical Characters and Organic Matter of Cracking Soils from Middle of Iraq.
Al-Qadisiyah Journal For Agriculture Sciences,
2017, Volume 7, Issue 2, Pages 118-127
AbstractIn order to investigate the role corn cobs and gypsum in some physical characters and organic matter of clayey cracks and their properties. Seven soils sites (Afak, Al-Diwaniyah, Al-Taleea, Babel, Agriculture college, Al-Wahda and Al-Raid project)
There are three types of treatments as follows:
- Corn cobs was applied in four levels (0 . 10 . 20 and 40) g.kg-1
- Gypsum (calcium sulfate) applied in four levels (0 , 5 , 7.5 and 10) g.kg-1.
- Treatments of interaction between corn cobs and gypsum.
Corn cobs , gypsum and their interaction were applied in same levels above.
In this experiment , 2 kg of each studied soil were treated with same levels of corn cobs and gypsum above and incubated at 30 + 2 °C for 90 days and 80% relative moisture content at 33 kpa. The results were summarized as :
Soil aggregate stability (MWD) and organic matter values were increased , while modules of rupture and (COLE) values were decreased , with increasing of gypsum and corn cobs applying. Also, results showed that the decreasing of (COLE) values were depending on the clay content and interaction treatments , between corn cobs and gypsum. The decreasing of (COLE) values were the highest in the clayey cracks disappeared treatments.
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