The continuous innovation and refinement of balers have not only enhanced agricultural productivity but also fostered the development of mechanized agriculture. Entering the 20th century, baler designs became increasingly sophisticated and automated, gradually incorporating features such as automatic baling and tying. The adoption of internal combustion engines and steam engines diversified the power sources-shifting from early horse-drawn models to mechanical drives-thereby enabling more efficient operation.
By the mid-20th century, advancements in materials science led to further optimization of baler structures. Modern balers are capable of compressing and tying forage while also adjusting to the harvesting requirements of various crop types, thereby better meeting the demands of agricultural production.