The Different Types of Disc Blades

Published on September 4, 2023

Ask any respectable farmer, and they’ll remind you of what every agriculture professional knows: A bountiful harvest always begins with meticulous soil preparation. Choosing the right tool is the first step toward a successful yield.

When it comes to readying your land, the key to your success largely lies in the quality of the disc blades you employ. However, there’s an impressive variety of agricultural discs on the market, each with its uniquefeatures. In this article, we’ll delve into the different types of disc harrows available, helping you make informed decisions to optimize your soil preparation process.

Based on their shapes and dimensions, agricultural discs cater to specific agronomic needs:


The larger the disc diameter, the deeper the work it accomplishes. Typically ranging from 400 to 710 mm, disc size also depends on the type of machine in use:

Disc plows employ discs with diameters of 660mm (26 inches) or 710mm (28 inches). Their role revolves around deep plowing, cutting the soil to a width of 30 cm and a depth of 20 to 30 cm, burying plant debris, and preparing the soil for subsequent crops. Their profound impact also aids in soil loosening
Disc harrows (such as V or X-shaped cover crops) feature discs measuring 610mm (24 inches) or 660mm (26 inches). These discs work at depths of 10 cm to 15 cm and are tasked with cutting and mixing residue within the soil. This equipment helps farmers to clear any unwanted crops, weeds or crop residue. In addition, it helps in mixing the soil, thereby facilitating a fast growth of seeds.
Independent disc harrows  Independent disc harrows, unlike disc plows and cover crops, aim to minimize their impact on soil structure to the maximum extent possible. They perform shallow, high-speed work at a depth of 5cm to 10cm. Using this type of machine will create an ideal false seedbed to reduce the seed bank in the soil, thereby preparing for future steps like planting. They are also utilized for the destruction of vegetative cover crops.
Plain or Notch

The faster soil work occurs, the quicker disc wear becomes evident. For extended disc life, it’s advisable to opt for thicker discs, especially in demanding conditions such as sandy or rocky soils
Plain discs prove highly effective in shallow tillage, targeting the eradication of young weeds or creating a fine seedbed.

Notched discs offer the advantage of easy soil penetration, reduced risk of blockage, and straw scalping. They excel in deep soil tillage, with various notching profiles providing distinct agronomic benefits.


The faster soil work occurs, the quicker disc wear becomes evident. For extended disc life, it’s advisable to opt for thicker discs, especially in demanding conditions such as sandy or rocky soils

The forms of discs

Concave discs represent the most commonly used disc shape in agriculture. Disc concavity is measured in radius (mm), with smaller radius resulting in greater disc concavity. This feature impacts disc penetration into the soil and soil crumbling.
Conical discs enable consistent working angles despite wear and tear on parts. They exhibit superior bending capacity compared to concave discs.
Flat back discs are compatible with both concave and conical discs and are typically mounted on independent arms using hubs.
Wavy discs are more aggressive, ensuring better disc penetration into the soil. They deliver impeccable cutting and mulch mixing, especially in extreme and damp conditions. Their unique design allows for self-cleaning, and they stand the test of time while maintaining peak effectiveness.
As we conclude this exploration into the world of agricultural discs, it becomes abundantly clear that soil preparation is an art as much as it is a science. The choice of the right disc can be the defining factor between a bountiful harvest and a mediocre one.

These versatile tools, available in various shapes, sizes, and configurations, offer farmers a spectrum of options to suit their specific agronomic needs. From the deep plowing prowess of disc plows to the precision cutting and mixing capabilities of notched discs, each type brings its unique strengths to the field.

Remember, the key to success lies not just in selecting the right disc but in understanding your soil, crops, and the demands of your agricultural operation. Soil preparation is the foundation upon which agricultural excellence is built.

So, whether you’re embarking on a quest for greater yields, striving for more sustainable farming practices, or seeking to enhance the health of your soil, the world of agricultural discs has a tool tailored to your requirements. With these insights, you’re better equipped to make informed decisions that will ultimately pave the way for a prosperous and fruitful harvest.

As you prepare to take your agricultural endeavors to the next level, may your fields flourish and your yields abound, all thanks to the artistry and precision of the agricultural discs that you choose. Happy farming!