In the College of Agricultural Engineering Sciences (University of Baghdad), a Master’s thesis defence was conducted with the title “The Effect of Zeolite and Agricultural Sulfur Addition on Phosphorus Availability from Phosphate Rock and the Growth of Yellow Maize in Calcareous Soil” by the student Alak Kareem from the Department of Soil Science and Water Resources.

The study aimed to investigate the impact of agricultural sulfur addition on phosphorus release from phosphate rock, the amount adsorbed on zeolite, and the growth of yellow maize. Adsorption and release experiments for phosphorus were conducted with soil, zeolite, and agricultural sulfur at their highest levels. The maximum adsorption capacity (Xm) and binding energy (K) were estimated using the Langmuir equation.

The researcher recommended the use of zeolite, agricultural sulfur, and phosphate rock, as well as raising awareness among farmers about the importance of adding natural soil amendments to preserve soil moisture. It was also suggested to apply agricultural sulfur two months before planting to enhance its biological activity in plant growth. Using phosphate rock as a fertilizer was recommended due to its economic benefits in increasing production. Further research and studies on the use of other soil amendments to enhance phosphorus availability in different conditions were advised.

Congratulations to the student on this achievement!

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