Whether using dry, liquid, or anhydrous ammonia, the John Deere 1870 opener has the options that fit the application needs.
This picture shows the difference between the anhydrous high top and aqua anhydrous tips pictured in the chart above. On the left, the anhydrous high top has a thicker tube wall (1.3-cm [0.5-in.] outer diameter) than the aqua anhydrous tip, though the inner diameter of both tips are equal. The NH3 knives may also be used in combination with the included dry-delivery tube for those wanting to apply NH3 and dry fertilizers simultaneously in the same fertilizer trench.
Additional information for code 1235: the mud-proof combination: dry-fertilizer tube and tip, code 1235, is available for those applying dry fertilizers only. This is recommended for running in sticky, heavy clay-type soils. However, it works well in all soil types to prevent mud from plugging the fertilizer tube opening. This opener is included as base equipment.
If seeding with dry fertilizer only, this option is highly recommended. The fertilizer exits the tube at a lower point, allowing growers desiring to place fertilizer at shallower depths more consistently.
The lower fertilizer exit point also allows the fertilizer to get to the bottom of the trench when more fertilizer and seed separation is desired, and for those light soils that tend to cave in the trench before the fertilizer is placed.
Additional information for part number AA69274: the standard knife is paired up with the 3.2-cm (1.25-in.) dry-delivery tube to provide accurate dry fertilizer placement. If seeding with dry fertilizer only, the mud-proof combination is highly recommend.
1870 fertilizer shanks engaged in the ground
|1.) AA69266 (1250) - Dry fertilizer|
|2.) AA69271 (1220/50/55) - Dry fertilizer with NH3 or liquid|
|3.) AA69272 (1215) - Liquid tube|