SPRING-TINE HARROW

The spring-tine harrow is made up of relatively wide; flat, curved bars spring steel with one end of it which is fastened rigidly to a bar. The other soil-engaging end in pointed to give good penetration to the soil. The depth to which the tines will penetrate the soil is controlled by adjusting the angle of the tines by means of levers. This type of harrow can posses single section of about eight to twelve tines per width or several sections hitched or linked together and used as a unit depending on the power that is available.

Unlike the chisel plough during operation, the interchangeable soil-engaging tools like sweeps is absent in the tines of the spring-tine harrow. The tines can be closely spaced at 44mm apart. Each tine is shaped somewhat like a circle with enough opening to give depth and trash clearance. The spring-tine harrows are adapted for use in rough and stony ground, loosening soil that are previously harrowed with disc harrow prior to grain drill seeding rice or other small grains for good seed-soil contact. The tines penetrate deeper than the teeth of a spike-tooth harrow. It break the soil crust and penetrates as deep as 18cm, it pulls weed roots to the surface where the sun dries and destroys them or for burning.