New wings on the interaction between conventional subsoiler and paraplow tines with the soil: effects on the draft and the properties of soil

ABSTRACT

Equipping tines with the wings increases draft and soil loosening. Wing angles affect tine performance, soil aggregation and remained residue. In this research, conventional wing with no bent plus backward and forward bent wings with bend angles of 10 and 20° were attached to both a subsoiler and paraplow tine. The rake angle of all wings was 15°. The effects of tine and wing on draft, soil disturbance area, specific draft, remained residue, and mean weight diameter (MWD) were investigated in a clay loam soil at depth of 40 cm and speed of 1.6 km h⁻¹. The effect of tine and wing plus interaction of them on all parameters was significant (p < 0.01) with the exception of remained residue. The bent-winged tines required higher draft and caused higher disturbance area, lower specific draft, and lower MWD than the conventional tines and those without wing. The highest draft, disturbed area and remained residue plus the lowest specific draft and MWD were obtained when applying the 10° forward bent-winged tines. In present work, the paraplow equipped with forward bent wings with a bend angle of 10° was suggested as a suitable tool for deep soil loosening under a conservation tillage system.

KEYWORDS:

• Bend angle
• draft
• mean weight diameter
• residue remaining
• soil compaction

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the University of Mohaghegh Ardabili [123];