Khédija Bouajila Knihy

Focusing on soil fertility, this work investigates the mineralisation dynamics of nitrogen, phosphorus, and potassium through various treatments: farmyard manure (from cattle and sheep), compost, and poultry droppings. It reveals that compost enhances nitrogen mineralisation most effectively, while all amendments significantly boost phosphorus and potassium levels in the soil. The effectiveness of each treatment varies based on the soil's chemical and biological properties, with compost consistently providing the highest levels of available nutrients.

The study investigates the impact of organic amendments, specifically sludge from the Beja wastewater treatment plant, on barley cultivation. By comparing the physico-chemical properties of amended and unamended plots, the research highlights significant differences in nitrogen, carbon, potassium, phosphorus, and trace elements, as well as barley yields. While some parameters showed minimal variation, the findings emphasize the potential of organic amendments to enhance soil fertility over the long term, contributing to improved agricultural production.