Akademik Veri Yönetim Sistemi
Soil and Tillage Research, cilt.264, 2026 (SCI-Expanded, Scopus)
A single-disk opener and a double-disk opener were run on a soft sandy loam soil, a firm sandy loam soil, and a clay soil which had aggregates and a bulk structure. On both sandy loam soil conditions, we investigated the performance of the openers on a bare soil surface and while cutting through three crop residues which rested on the soil surface. The crop residues were corn (Zea mays L.), soybean (Glycine max (L.) Merr.), and wheat (Triticum aestivum L.). On the clay we used a bare soil surface and forward velocities of 1.9, 3.0, 4.1, and 5.1 km h−1. On the sandy loam the velocity was 3.0 km h−1. The draft of the single-disk opener and the double-disk opener on the firm sandy loam and on the clay was significantly greater at a 75 mm depth than at a 50 mm depth. The draft on the soft sandy loam was not significantly affected by depth. On the clay, the draft for the single-disk opener was significantly less than that for the double-disk opener. The double-disk opener exhibited very good performance in shearing the crop residue stems because the opener had two disks contacting the residue simultaneously and as the movement of the disks relative to the soil occurred, those cutting edges of the two disks spread apart in the lateral direction, thereby promoting shearing. The draft and vertical force for the single-disk opener on the clay at 50 and 75 mm depths, and the side force at the 75 mm depth, increased as forward velocity increased. The vertical force for the double-disk opener on the clay at the 75 mm depth increased as forward velocity increased.