Frontswept Fertilizer Knives
Nichols has four styles of frontswept fertilizer knives available in numerous combinations, such as the our best-selling, original N-15.
Parabolic Frontswept Fertilizer Knives
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe & Protector | N40TP8 | 6.65 |
| 1/8" Pipe, Protector, & Sealer | N40TPSR8 | 7.35 |
| 1/4" Pipe & Protector | N40TP4 | 6.65 |
| 1/4" Pipe, Protector, & Sealer | N40TPSR4 | 7.35 |
| Two 1/8" Pipes, Protector, & Sealer | N40TPSRDU8 | 7.25 |
| Two 1/4" Pipes, Protector, & Sealer | N40TPSRDU4 | 7.25 |
| 20" with 1/8" Pipe, Protector, & Sealer | N40TPSR820 | 8.50 |
| 1/8" Plastic, 1/8" Steel Pipe, Protector, & Sealer | N40LTPSR8 | 7.85 |
| 1/8" Plastic, 1/4" Steel Pipe, & Protector | N40LTP | 7.0 |
| 1/8" Plastic, 1/4" Steel Pipe, Protector, & Sealer | N40LTPSR | 7.75 |
Nichols parabolic frontswept knives are designed for better gas and solution placement along with reliable sealing. Manufactured with high-chrome alloy cast points and pipe protectors, they are superb resisting abrasion.
With the LTP series, the 1/8" plastic pipe is safely guarded by a surrounding 'L' shaped pipe protector. This arrangement is so the plastic pipe can be directly attached to the manifold without the use of connectors or adaptors. The plastic pipe resists corrosion and can be used in acid applications. The double piped N40LTP series can be used for dual applications where acid is pumped through the plastic and ammonia via the steel pipe.
All knives come equipped with either 1/8" or 1/"4 standard wall pipe. LTP series have 1/8" flexible plasitc pipe. These knives are contructed from 1/2" by 2-1/2" high quality steel with 1/2" holes for 1-1/2" to 3" centers.
With the LTP series, the 1/8" plastic pipe is safely guarded by a surrounding 'L' shaped pipe protector. This arrangement is so the plastic pipe can be directly attached to the manifold without the use of connectors or adaptors. The plastic pipe resists corrosion and can be used in acid applications. The double piped N40LTP series can be used for dual applications where acid is pumped through the plastic and ammonia via the steel pipe.
All knives come equipped with either 1/8" or 1/"4 standard wall pipe. LTP series have 1/8" flexible plasitc pipe. These knives are contructed from 1/2" by 2-1/2" high quality steel with 1/2" holes for 1-1/2" to 3" centers.
Original N-15 Frontswept Fertilizer Knives
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe, Standard | N15B8 | 5.3 |
| 1/8" Pipe & Sealer, Standard | N15SR8 | 5.3 |
| 1/8" Pipe, Hardfaced | N15HF8 | 5.5 |
| 1/8" Pipe & Sealer, Hardfaced | N15HFSR8 | 5.55 |
| 1/8" Pipe, Protector, & Sealer, Hardfaced | N15HFTPSR8 | 5.55 |
| 1/4" Pipe, Hardfaced | N15HF4 | 5.5 |
Used for many years, the Nichols N15 is the basic hardfaced standard. Oil quenched and hardened, this knife is hardfaced by electrical application. Available in various configurations, the N15 is punched with 1/2" holes for 1-1/2" to 3" centers.
Narrow Profile Frontswept Fertilizer Knives
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe & Protector | FL20TP8 | 6.30 |
| 1/8" Pipe, Protector, & Sealer | FL20TPSR8 | 6.50 |
The Nichols FL20 is a narrow profile, low tillage knife that can be used in both minimum till applications, or where narrow 3/8" knives are required for lower soil disturbance. These knives are punched with 1/2" holes for 1-1/2" to 3" centers.
Economy Frontswept Fertilizer Knives
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe & Protector | FL30TP8 | 6.75 |
| 1/8" Pipe, Protector, & Sealer | FL30TPSR8 | 6.88 |
With a long-lasting, heavy cast alloy point, the Nichols FL30 is a knife with an ideal angle for effective penetration. An overall superior design makes the FL30 an excellent knife for basic applications. Made of hardened 1/2" by 2" steel, with 1/2" holes for 1-1/2" to 3" centers.
M1 Winged Anhydrous Knife
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| Style | Part Number | Weight (lbs) |
| 1/8" Pipe & Protector | M1TP8 | 7.1 |
| 1/8" Pipe, Protector, & Sealer | M1TPSR8 | 7.8 |
Based on the N40, the Nichols M1 winged anhydrous knife has established a reputation as being the best-sealing knife available, making it the logical choice for any anhydrous ammonia job. The M1 is constucted with 1/2" x 2-1/2" hardened steel, a chrome-alloy tube protector, and a 2" wide, winged casting that features a narrow profile which minimizes soil disturbance at the surface level. Thanks to the M1's extended nose and swept wing, the knife penetrates the ground with ease and consequently, lasts much longer than standard knives. The engineering of the M1's wing allows ammonia to be injected directly beneath the wing, making for a wider, more consistent fertilizer band and uncompromised sealing.
Backswept Fertilizer Knives
Nichols has three different styles of backswept fertilizer knives, including the N-19, which are great for use with vegetable crops.
Original Backswept Fertilizer Knives
| Size | Style | Part Number | Weight (lbs) |
| 13" | 1/8" Pipe, Alloy Edge | N13CP8 | 3.7 |
| 13" | 1/8" Pipe, Alloy Edge, & Protector | N13CPTP8 | 3.8 |
13" | 1/8" Pipe, Hardfaced | N13HF8 | 3.8 |
| 17" | 1/8" Pipe, Alloy Edge | N17CP8 | 4.2 |
17" | 1/8" Pipe, Alloy Edge, & Protector | N17CPTP8 | 4.3 |
| 17" | 1/8" Pipe, Hardfaced | N17HF8 | 4.3 |
Nichols Original Backswept Knives are simply the best for sidedressing vegetables and fertilizing while seeding. They can even be used on MaxiMerge equipment while planting. Both N13 and N17 knives are offered either hardfaced on one side, or with an alloy casting and an optional cast alloy pipe protector. Regardless of the soil conditions, there's an N13 or N17 for most any situation. These knives are made from 3/8" steel and are punched with 1/2" holes for 1-1/2" to 3" centers.
N-19 Backswept Fertilizer Knives
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe, Standard | N19B8 | 4.5 |
| 1/8" Pipe, Hardfaced on One Side | N19HF8 | 4.75 |
| 1/8" Pipe, Hardfaced on Both Sides | N19HF28 | 4.8 |
| 1/8" Pipe, Alloy Edge | N19CP8 | 5.25 |
| 1/8" Pipe, Alloy Edge & Protector | N19CPTP8 | 5.3 |
Nichols N19 knives are available standard, hardfaced on one or both sides, or even with a chrome alloy wear edge with an optional chrome alloy pipe protector. The N19 is one of Nichols' best selling knives and has a reputation for being the finest in the field. The hardfacing on these knives is applied by hand with acetylene, meaning it's the smoothest hardfacing available which makes the N19 self-sharpening. These knives are 19", punched with 1/2" holes for 1-1/2" to 3" centers and are fabricated from 1/2" material.
Backswept Knives for Dry Fertilizer Delivery
| Style | Part Number | Weight (lbs) |
| 1-1/2" Tube | N13HF-112 | 3.8 |
Modeled after the other N13 knives, this Nichols knife is made for the delivery of dry fertilizer. Constructed from 3/8" by 2" steel, this knife is harfaced on one side to keep it sharp. This N13 is also equipped with a much larger 1-1/2" tube necessary for the application of dry fertilizers.
Knives for Chisel Plows and Field Cultivators
Specifically for use with chisel plows and field cultivators, these fertilizer knives are available plain or hardfaced.
Fertilizer Knives for Chisel Plows
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe, Hardfaced | 43N20HF8 | 5.4 |
| 1/8" Pipe, Chrome Alloy Point, & Protector | 43N60TP8 | 5.5 |
| 1/8" Pipe, Winged Chrome Alloy Point, & Protector | 43N60MTP8 | 5.8 |
The Nichols 43N is designed for rugged use with a chisel plow. With a 2" wide stem and two 1/2" holes for 1-3/4" centers, this knife is offered either hardfaced, or with a chrome alloy point and protector attached, ensuring a long life.
Fertilizer Knives for Field Cultivators
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe, Hardfaced | 33N20HF8 | 2.2 |
| 3/8" x 2" x 9" Point, Pipe* | 33ICS9 | 3.2 |
Built for field cultivators, the Nichols 33N comes hardfaced and ready to prove its strength and durability. This knife and the 33ICSP have a 1-3/4" stem with two 7/16" holes for 1-3/4" centers. Like any other piece for a field cultivator, these Nichols knives require plow bolts for mounting.
Knives for Coulter/Knife Combination
Nichols fertilizer knives for coulter/knife combination makes it possible to fertilize while using coulter blades.
| Style | Part Number | Weight (lbs) |
| 1/8" Pipe, Standard | N5P8 | 4.0 |
| 1/8" Stainless Pipe, Standard | N5P8S | 4.0 |
| 1/8" Pipe, Hardfaced | N5HF8 | 4.0 |
| 1/8" Stainless Pipe, Hardfaced | N5HF8S | 4.0 |
| 1/4" Pipe, Standard | N5P4 | 4.0 |
| 1/4" Stainless Pipe, Standard | N5P4S | 4.0 |
| 1/4" Pipe, Hardfaced | N5HF4 | 4.0 |
| 1/4" Stainless Pipe, Hardfaced | N5HF4S | 4.0 |
For use following coulters, the Nichols N5 is available plain or hardfaced, with regular pipe or stainless. The knives are made from 3/8" by 2" forged steel and are offered with either 1/8" or 1/4" pipe.
Long Shank Fertilizer Knives
Great for leafy crops, Nichols long shank fertilizer knives excel in fumigation and fertilization situations.
| Style | Part Number | Weight (lbs) |
| 1/4"" Tongue Hole, Standard | N30-4 | 11.0 |
| 1/4"Tongue Hole, Hardfaced | N30-4HF | 11.0 |
| 5/16" Tongue Hole, Standard | N30-5 | 11.0 |
| 5/16" Tongue Hole, Hardfaced | N30-5HF | 11.0 |
| Replacement Alloy Point for N30 | 2002 | 1.0 |
The N30 applicator is used on tool bar holders with fumigation or fertilizer application in vegetables and other leafy crops. With a special tongue that accepts replacement cast alloy points held by a roll pin or screw and nut, it is the highest-quality and longest-lasting long shank fertilizer knife.
