For approaching a quarter century, John Deere 750A drills have been on the market, their ability to work directly into stubble, lightly tilled and fully cultivated land conferring on them the versatility that suits both farm and contractor operators. Deere has made little fanfare about these drills, however, which may lead those unfamiliar with the design to just assume they are much the same now as they were when launched. But there have been a series of key developments over the years, with the most important relating to the seeding units.
John Deere has offered its 750A No-Till/All-Till seed drill in much the same basic format since the mid- 1990s, but that’s not to say these 3.0m, 4.0m and 6.0m units have stayed the same. The company has refined and tweaked the design to improve versatility across a range of drilling regimes and soil types. As such, these well-proven machines continue to be in big demand on the second-hand market.
For approaching a quarter century, John Deere 750A drills have been on the market, their ability to work directly into stubble, lightly tilled and fully cultivated land conferring on them the versatility that suits both farm and contractor operators. Deere has made little fanfare about these drills, however, which may lead those unfamiliar with the design to just assume they are much the same now as they were when launched. But there have been a series of key developments over the years, with the most important relating to the seeding units. At the business end, a single disc opens up the seed slot, with the pneumatically conveyed seed dropping down and being placed at the correct sowing depth. This slot is then compressed around the seed by an air-filled rubber firming wheel while an ensuing closing wheel finishes the job. An adjustable coil spring sets the opening disc pressure to between 0kg and 250kg to allow for cultivated ground, min-till and direct drilling.
These are the basics, though it’s important to realise John Deere is now on its fourth generation of coulter/opener….
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