A new knife guarantees safe separation of seed and fertilizer when using the Precision Disk drill from Case
Case has delivered a new one-pass seed-fertilizer disc drill this fall.
After several years of producing the Precision Disk single shoot 500, and many producer questions about a single pass drill version, CNH has delivered a double-shoot option on the machine. The new DS is based on the existing series of Precision Disk drills already in the field.
What makes the 500DS possible is the new Precision Placement Knife, allowing simultaneous seed and fertilizer placement. Fixed geometry places fertilizer one inch below and one inch to the side of the seed for guaranteed two-inch separation. That relationship remains constant regardless of seeding depth. Case says this puts the seed and fertilizer three inches closer than competitors’ drills.
The operating speed of the 500 is attractive to producers with seeding at up to eight m.p.h. possible, says the company.
The knife is a unique steel composition with a reinforced carbide edge. The drill uses a new concave chevron-patterned firming wheel that collects moist soil ejected from the trench and places it back over the seed, ensuring good germination. The trench is closed with a separate ground-engaging tool connected to the row unit. An 18-inch gauge wheel cleans the disc to prevent soil throw. The wheel is positioned farther back, closer to the knife, for better depth control.
The T-handle depth control provides adjustment without tools. Depth control is now indexed to one-quarter inch per notch. Spacing between each notch is progressively larger to compensate for the travel arc of the gauge wheel on the arm, guaranteeing one-quarter-inch depth adjustment for each notch.
Lighter, shorter frame design with two ranks allows the drill to follow the contour of the ground more closely than deeper designs with three ranks. The 20-inch up and down movement of the parallel link row unit facilitates superior ground following.
The disc units move up and down vertically, rather than on an arc, maintaining a constant angle of attack at the soil’s surface. The result keeps steady pressure and relationship between the closing wheel and coulter.
Down-pressure is controlled from the cab, and a gauge confirms the setting on the toolbar.
With 10-inch row spacing and a 60-foot toolbar, the Precision Disk 500DS weighs less than competitor air drills of the same size, weighing in at 49,000 pounds. Less weight means less compaction, less draft and more available horsepower for higher speeds and power to seed at higher rates.
“This is a drill producers should consider if they’re looking for better accuracy, more versatility and increased productivity,” said Trent Nowosad, Case’s marketing manager for seeding equipment.
The machines are available as 30 and 40 foot machines, with a single fold, and 50 or 60 foot machines with a double fold for transport. These are available as tow-behind or between machines.