تقييم أداء مركب آلي لنثر السماد العضوي وخلطه بالتربة

Abstract

This study aimed to evaluate the performance of an integrated machine used for spreading organic fertilizer and mixing it with the soil. Field experiments were conducted on clayey soil using a combined system that performs both tillage and fertilization simultaneously through a chisel plow. The experiments included three tractor forward speeds (2, 4.5, and 6 km/h) and three fertilizer discharge opening settings (3, 5, and 7 cm), resulting in nine treatments. Each treatment was replicated three times, giving twenty-seven experimental units.
Data were collected on the percentage of organic matter in the soil and the depth of fertilizer incorporation. The Least Significant Difference (LSD) test at a 0.05 probability level was used to compare treatment means. The results showed a significant increase in the organic matter percentage with increasing tractor speed and fertilizer discharge opening. The highest value, reaching 6.01%, was recorded at a tractor speed of 6 km/h and a fertilizer discharge opening of 7 cm. Additionally, the depth and efficiency of fertilizer–soil mixing increased with higher tractor speeds.