Dirt Dog - All Purpose Plow / Field Cultivator REVIEW + PICTURES

[jeff9366]

Dirt Dog All Purpose Plow / Field Cultivator


Dirt Dog Model APP 66-5
Total Width 66", Working Width 62", Five Tines, Weight 284 Pounds, Paid $835.00 (2010)
​

Field Cultivator: A Three Point Hitch mounted, secondary tillage implement, used to perform operations such as soil aeration, sub-surface vine and root removal and eradication of deep rooted weeds. Field cultivators are equipped with parabolic curved steel tines, typically spring mounted, to permit the tine to move within the soil and shatter clods. Field cultivators are constructed similarly to chisel plows, but are more lightly built. (Used to aerate compacted residential lots prior to installing irrigation and/or laying sod.)

Today the Field Cultivator/All Purpose Plow is NOT one of the best known Three Point Hitch mounted implements. It is, however, one of the oldest designs, having been patented by Harry Ferguson, inventor of the tractor Three Point Hitch, in 1932-1933. The other earliest Three Point Hitch implements were the Ferguson Moldboard Plow, a Ferguson ridger for potato cultivation and a Ferguson row crop cultivator. (Photo#14)

Harry Ferguson, the inventor, termed this implement a 'Tiller'. Ferguson patented arrangement by which the tines are spring loaded, allowing them to kick back if an obstruction is encountered, then return, undamaged, to their normal operating position. Field Cultivators sold today are contemporary replicas of the 'Tillers' sold by the Ferguson organization from 1934.

Today, subject implement is termed a Field Cultivator or an All Purpose Plow. Field Cultivators are available in widths from 54"/Cat 1 to 173"/Cat2, with three to nineteen tines, for subcompact through utility tractors. The three USA marketers are Dirt Dog, Bush Hog and Fred Cain. (LINKS at page bottom.) Former producers were Ferguson, Ford Dearborn, Leinbach and Bush Hog, probably others. Wider, heavier Field Cultivators are available for the Big-Ag market.

The Field Cultivator and its heavier relation, the Chisel Plow, are both used for conservation tillage. (Photo#5/APP, Photo#6 Athen's Chisel Plow; both manufactured in Georgia.)

WIKIPEDIA TILLAGE - Reduced Tillage​

Reduced tillage leaves between 15% and 30% residue cover on the soil or 500 to 1000 pounds per acre (560 to 1100 kg/ha) of small grain residue during the critical erosion period. This may involve the use of a chisel plow, field cultivators, or other reduced tillage implements.

Chisel Plow​

The chisel plow is a common tool to get deep tillage (prepared land) with limited soil disruption. The main function of this plow is to loosen and aerate the soils while leaving crop residue on top of soil. This plow can be used to reduce the effects of compaction and to help break up plowpan and hardpan. Unlike many other plows the chisel will not invert or turn the soil. This characteristic has made it a useful addition to no-till and low-till farming practices that attempt to maximize the erosion-prevention benefits of keeping organic matter and farming residues present on the soil surface through the year. Because of these attributes, a chisel plow is considered to be more sustainable than other types of plow, such as the mouldboard plow.

The chisel plow is typically set to run up to a depth of eight to twelve inches (200 to 300 mm). However some models may run deeper. Each of the individual shanks are typically set from nine inches (229 mm) to twelve inches (305 mm) apart. Such a plow can encounter significant soil drag, consequently a tractor of sufficient power and good traction is required.


Field Cultivators and Chisel Plows have parabolic shaped tines in common. Parabolic tines pull much easier through soil than angled shanks, such as those equipping Box Blades. From my observation, this is because parabolic shaped tines have the forward part of the tines in nearly a horizontal position working the soil. Field Cultivator tines are tipped with sharp, chisel points further reducing draft resistance.

Each sharp chisel point on my Field Cultivator is 2" X 10" = 20 square inches, oriented horizontally. Chisel points are uniform 5/16" thick. Tines are 1/2" wide.

Box Blade shanks are angled at 45 degrees to reach the bottom of road potholes and chip out surrounding hard road surface. They are designed for rigidity to apply bludgeon force. Box Blade points have an edge but get fat immediately.

Each Box Blade ripper point on my Rollover Box Blade is 1-1/4" X 5-1/4" = 6-1/2 square inches, oriented at 45 degrees. Orientation at 45 degrees hugely increases draft resistance. Box Blade shanks are 5/8" wide.

The engaged five tine Field Cultivator pulls easily, relative to my five shank Rollover Box Blade, with shanks down.

I primarily use my Field Cultivator for removing subsurface wild grape vine roots and runners from recently debrushed and thinned Oak woodlands, where I intend to seed game food plots. (Photo #10) Primary brush removal attachment is a Ratchet Rake on Kubota L2296 Heavy-Duty Round-Back bucket. Land once was cattle range.

This week I used the Field Cultivator to drag out wild grape vines and a few wild roses, (vines and small corms) growing up the trunks and into the crowns of native Water Oaks. Water Oak roots grow straight down into the soil, so I could back the Field Cultivator up against an Oak's trunk, lower the implement and PULL. Tractor pulled in HST/LOW. (Photo#9 + Photo#11)

Parabolic tines "cup" shallow vine roots, so the implement can drag unwanted vegetation out of the soil without runners fragmenting. (Photos #9,#10,#11)

At the end of a pull, when the Three Point Hitch is lifted, the Field Cultivator self cleans reliably.

I made the right decision in selecting a five tine model rather than a seven tine model for my Kubota L3560. Both five tine and seven tine variations share the 66" X 2-1/2" X 2-1/2" angle iron frame. Seven tines in the soil would be too much for my mid-weight compact tractor.

I pulled the Field Cultivator a short distance through a Bahia grass pasture. Field Cultivator tines/points sucked into the soil like a Moldboard Plow, all the way to the frame, aerating deep. The Bahia appeared fine when I finished. It will be a few days before I can be sure of Bahia recovery. Draft resistance on tractor and implement was moderate.

I would like the option to substitute 5 X 10" width, shallow-cultivating row crop sweeps for the chisel points bolted to the tines, to expand current cultivating width of the points from 10" per pass, (5 x 2"=10") to 50" (5 X 10" = 50") with sweeps. I have pictures of Ferguson 'Tillers' fitted with sweeps in England. (Photo#13) However, I have not been able to find sweeps to fit 1/2" width tines.

Row crop sweeps from TSC, Agri Supply, Nichols Tillage and Wiesse are dimensioned to mate with 1-3/4" width shanks on Big-Ag Field Cultivators, not my 1/2" width tines. Also, 1/2" width tines mean I need to use a 1/4"-20 bolt and nut, rather puny considering the draft force exerted on a 10" sweep. (Some report welding on sweeps.)



My soil is Florida rock-free, sandy loam.


LINKS (2) Dirt Dog Manufacturing

ETA Tractor Ripper, Field Cultivator, Tillage Tool

 

[jeff9366]

I would like to occasionally substitute 5 X 10" width, shallow-cultivating row crop sweeps for the chisel points bolted to the tines. I have pictures of Ferguson 'Tillers' fitted with sweeps in England. (Photo#13) However, I have not been able to find appropriate sweeps.

CORRECTION RE: Ferguson Sweeps

LINK Ferguson BO-20 Tiller Parts List: Tine Assemblies, Soil Engaging Parts (3 pages)

See page 3.

Ferguson sweeps are standard bolt on design. Sweep attachment bolt size is specified as 7/16"-20, so Ferguson tines must have had greater tine width than Dirt Dog 1/2".

 

[Baby Grand]

Nice article, Jeff. Very informative & full of useful info.
Great reading - thanks for posting.
Related link to the Ferguson Mfg Co (not sure if it bears any relation to Harry Ferguson) :
Ferguson Products

 

[jeff9366]

Five additional photos:

Photo #17 Beauty shot; no shadows.

Photo #18 Beauty shot side view.

Photo #19 Drop from bottom of frame to chisel point is 18".

Photo #19 Aerating dry, compacted Bahia Grass cattle pasture in HST/LOW + 1/2 throttle.
Points are in ground 6" - 7". Had the grass been shorter points would penetrate deeper.

Photo #20 Maintaining bare dirt area around community burn pile in HST/MED +1/2 throttle.
Points are in ground 12" - 14".

 

[jeff9366]

July 7, 2015

Photo #1 I pushed through thick wild grape vine growth, visible to left and right of track, with tractor and Land Pride RCF2060 Rotary Cutter on July 4, 2015. Impenetrable to a human prior to cut. Yes, this is excellent snake habitat.

Photo #2 First pass with Dirt Dog APP 66-5.

Photo #3 Vegetation pulled from soil after first pass, Photo #2.

Photo #4 same

Photo #5 Second pass with Dirt Dog APP 66-5. Soil mostly clear of roots.

Photo #6 Vegetation pulled from soil after second pass, Photo #5. APP is lifted.

Photo #7 You need to be alert in the woods. Note "WIDOWMAKER" branch detached from tree, suspended in dead vines, poised to crash down. Perhaps 60 pounds in weight.

Photo #8 This food plot was planted with Austrian Iron Peas in March. During April we had practically no rain and germination was poor. Weeds and pasture grass smothered the few Austrian Iron Peas which germinated. I mowed with Land Pride RCF2060 Rotary Cutter on July 4, 2015, pulled through the APP 66-5 today. Before planting my wheat-based winter food plot seed during October, I may or may not Disc Harrow. I may just make a pass with my ETA Landscape Rake with gauge wheels, seed, then roll with my Cultipacker. October conditions will dictate. ( I may sow Buckwheat as a green manure and shade out weeds. )

Photo #9 Same. Soil is moist today but has very little ability to hold moisture, which perks through sand down to Florida aquaifer at about 35' depth. When moist soil is fertile. When dry, SAND. Tines are in the ground 8" to 11".

Photo #10 Same. Field Cultivator is adjusted for maximum depth. When slack is pulled out, and tines in soil are pulled back against springs equal to draft force, chisel points will have just a bit of 'down' angle to them. Field Cultivator "sucks" into soil like a moldboard plow. A later planting of Austrian Iron Peas in adjacent strip. Four hundred acres of unirragated Peanuts beyond the fence.

 

[super55]

Thanks for posting this Jeff.

I been on the fence for awhile about getting a dirt dog chisel plow. The tractors I will use to pull it are 32 and 34 hp. I couldn't decided on the 5 shank or 7 but from your post it sounds like a 5 shank would be about all I could handle anyways.

My soil is much like yours. Pretty much sandy loam with very little clay content. I want to try and preserve as much organic matter at the surface as possible. We garden pretty intensively but put our fields in a rotation system with clover and rye to help minimize chemical and fertilizer inputs.

I own a dirt dog grapple and was really impressed with the fit and finish of the grapple. It is very well built and appears they take a lot of pride in their products.

what do you like best about the product and what are a few things you'd change if any.

 

[jeff9366]

I believe a five (5) shank APP will do you. Dirt Dog makes the five shank APP in 66" (62" working width) and 60" (56") working width.

What I like best is that it works "as advertised". Easy to pull, while still able to go deep. Uncomplicated to adjust. Very effective eliminating roots from newly cleared ground. Excellent pasture aerator, at least in sandy-loam.

What I like second best is its easy mounting on the Three Point Hitch. I store mine on a sheet of old 1/2" plywood, under a cotton canvas tarpaulin, in the woods. It is easy to "jockey" the APP's 284 pounds on the plywood.

Third best is operating a legacy implement from earliest days of Harry Ferguson's Three Point Hitch.

I wish Dirt Dog would produce shoe-type SWEEPS to bolt on in lieu of the CHISEL POINTS, so APP could be used as a row crop cultivator. I have written DD with this suggestion.

Good tool. Fair price. Great performance per pound.

 

[jeff9366]

Here is an eBay source for direct replacement/OEM Dirt Dog APP 'points':

IF210UB Field Cultivator Point 2" Wide, 10-1/2 Long, 5/16 Thick | eBay

~~~read the ENTIRE review.

Shipping on one is $7.95, each additional $0.54.


Correct plow bolts size: 7/16"-14 X 1-3/4"

(#3 plow bolts - 1/3/4" length)

 

[stuckmotor]

One of the most interesting an informative reviews I've read. I have a question regarding the Athens plows being manufactured Georgia. I know of an Athens plow company in Athens Tennessee. Is there a plant in Georgia as well?
Index

 

[jeff9366]

December 1, 2016 Pictures​

Photo #1 - Photo #4 Dirt Dog APP pulling wild grape vines from woods soil.

Photo #5 - Photo #6 Consolidated vine piles being dragged to community burn pile. APP raised with hydraulic control until points are 2" above ground. Top Length is long in order to orient points upward slightly, to grip vines. Vines so 'hooked' can be dragged long distances with hardly any loss ~~~ as a bonus you get a clean swept trail.