{"id":411,"date":"2026-04-21T03:26:20","date_gmt":"2026-04-21T03:26:20","guid":{"rendered":"https:\/\/balerhay.com\/?p=411"},"modified":"2026-04-21T03:30:48","modified_gmt":"2026-04-21T03:30:48","slug":"hay-tedder-function-guide","status":"publish","type":"post","link":"https:\/\/balerhay.com\/fr\/application\/hay-tedder-function-guide\/","title":{"rendered":"How does a hay tedder work? Function, timing, and speed for faster drying explained"},"content":{"rendered":"
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Understanding Hay Tedder Function in Modern Hay Production<\/h2>\n

Why the right tedding technique shaves a full day off curing time \u2014 and when skipping the tedder is the smarter call.<\/p>\n<\/div>\n

The tedder is often the most underrated piece of haymaking equipment. Sitting between the mower and the rake in the workflow, it’s responsible for accelerating the single slowest step in hay production: crop drying. A hay tedder function<\/strong>s by fluffing and spreading cut hay so more surface area contacts sun and wind, dramatically reducing dry-down time. On a good drying day, proper tedding can cut curing time from 60 hours to 36 hours \u2014 meaning you beat the next weather system with a day to spare. This guide explains what tedders do mechanically, when to use them, and how to operate them for best results.<\/p>\n

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What a Tedder Actually Does<\/h2>\n

A tedder consists of multiple rotors \u2014 typically 2, 4, 6, or 8 depending on machine width \u2014 each with a ring of spring tines that rotate horizontally. As the tractor pulls the tedder through the field, each rotor lifts cut hay off the ground, fluffs it by breaking up mats, and scatters it loosely across the swath width. The net effect is that hay that was sitting flat on the ground, shielding itself from the sun, gets flipped, fluffed, and exposed to drying conditions.<\/p>\n

Modern tedders also shift hay sideways to help it relocate off damp ground onto drier ground where available. Some specialized models (usually called mergers rather than tedders) move hay more aggressively for specific downstream processes.<\/p>\n

\u25b8 Why Tedding Speeds Drying So Dramatically<\/h2>\n

Physics: water evaporates from hay surface at a rate proportional to exposed area and air exposure. Freshly-cut hay lying flat has relatively low exposed surface \u2014 the bottom of the swath sits on moist ground and never sees sunlight. Tedding lifts and fluffs, exposing essentially all the hay to sun and wind.<\/p>\n

Real-world numbers: untedded alfalfa swath at 24 hours post-cut is typically 35\u201345% moisture. Tedded swath at 24 hours is 22\u201328% moisture. That’s a full day’s curing progress gained from a single tedding pass. In weather-critical situations where a storm is 48 hours away, this can be the difference between a saved crop and a rained-on one.<\/p>\n

\u25b8 When to Ted<\/h2>\n

Timing matters more than most operators realize. Key principles on when to ted hay<\/strong>:<\/p>\n