(315) 853-6151
Blue tractor pulling a small square baler with a white Harvest Tec preservative tank along a hay windrow

Harvest Tec Hay Preservative Applicator Dealer in Central New York

Harvest Tec of Hudson, Wisconsin builds hay preservative applicators, in-chamber moisture sensors and Baler's Choice preservative for every make of baler. Clinton Tractor in Clinton, NY is a Harvest Tec dealer.

Call (315) 853-6151 Compare models

Baler preservative applicators

Harvest Tec builds an applicator kit for every make and model of baler: round, small square and large square. Choose the simple electronic control or the 700 Series automatic system with moisture sensors and job records.

Baler's Choice hay preservative

Baler's Choice is Harvest Tec's buffered propionic acid preservative. The maker says it lets you bale hay at up to 30% moisture without spoilage.

Moisture sensors

Standalone moisture systems give real-time readings in the bale chamber or the harvester spout, with no applicator needed. Harvest Tec says its sensors read accurately up to 60% moisture while baling.

Forage harvester applicators

These systems apply inoculant or preservative, or water to lubricate the knives and blower when chopping alfalfa silage. Harvest Tec makes kits for pull-type and self-propelled harvesters.

Harvest Tec history

Harvest Tec was founded in 1976 and is based in Hudson, Wisconsin. The company calls its people farmers who design hay tools for farmers. It focuses on applicators and moisture sensing for hay and forage, from wet to dry conditions.

Harvest Tec's own patent timeline starts with its first preservative applicator in 1986. It goes on to star wheel and round baler moisture sensors, an automatic applicator and a bale ID tagger. The maker says it works with the baler makers so its kits fit each make and model.

  1. 1976Harvest Tec is founded.
  2. 1986Patent for the first applicator: liquid preservative applied to hay with a 3-bar assembly.
  3. 2002Patent: star wheel moisture sensor, a device and method for measuring hay bale moisture.
  4. 2010Patent: The Tagger, a device for applying ID tags around a moving object on a continuous flow basis.
  5. 2014Patent: round bale moisture sensor, a device to measure the moisture of hay in a round baler.
  6. 2018Patent: measuring hay moisture in the pre-compression chamber of a rectangular baler.
Framed Harvest Tec patent certificates hanging on a wall

Compare Harvest Tec applicators and moisture systems

Search all 11 Harvest Tec products by line, name or feature. Specs come from harvesttec.com product pages; Baler's Choice specs come from the 2026 Harvest Tec Solutions Brochure.

Showing all 11 models

Harvest Tec 700 Series applicator kit: yellow preservative tank, pump plate and control modules

Harvest Tec baler applicator

Harvest Tec 700 Series Automatic Applicator

The control system for commercial operators who want detailed information on every bale.

8-70%moisture read, large square
24-800lb/hr application range
3 secrate adjustment
  • Applies the right rate on the go as moisture and throughput change
  • In-chamber star wheel or disc moisture sensors included
  • Readings on a tablet; large square balers can also use the baler ISOBUS display or a Harvest Tec Virtual Terminal
  • Job records for each bale: moisture, preservative used, date and time
  • Optional dye marker, GPS bale position and small square stroke counter
Full specifications
ControlBaler ISOBUS display, dedicated Virtual Terminal, or tablet
PumpSingle bypass pump supplying constant pressure to pulsing solenoid(s)
Rate controlFlow meter controls the rate of application
Moisture sensorsIncluded: disc style (round balers); star wheel (small and large square balers)
Job recordsIndividual bale details
Baler fitAll baler models and sizes
Tank sizes, round and small square balers25 and 55-gallon
Tank sizes, large square balers100 or 110-gallon
OptionsDye-marker kit; stroke counter (small square balers); GPS package

Source: Harvest Tec Baler Applicators page.

Harvest Tec electronic applicator kit: yellow tank, pressure gauge, pump and in-cab control box with dial

Harvest Tec baler applicator

Harvest Tec Electronic Applicator

An affordable, reliable preservative system for smaller operations, on any make and model of baler.

25 / 55gal tanks, round and small square
100gal tank, large square
1pump
  • Cab control box with on/off toggle switch and rheostat dial
  • Turn the dial to change pump speed and preservative output
  • Fits all baler models and sizes
  • Can be upgraded to a 700 Series automatic system
Full specifications
ControlCab-mounted control box with on/off toggle switch and rheostat dial
PumpSingle pump and gauge
Rate controlDial changes pump speed to vary preservative output
Moisture sensorsNot listed
Baler fitAll baler models and sizes
Tank sizes, round and small square balers25 and 55-gallon
Tank sizes, large square balers100-gallon

Source: Harvest Tec Baler Applicators page.

Baler's Choice hay preservative in a bulk tote and a green 50-gallon drum

Harvest Tec hay preservative

Baler's Choice

Buffered propionic acid with a near neutral pH of 6.0, made to be gentle on balers.

30%max hay moisture
6.0pH
64.5%propionic acid
  • Works on alfalfa, timothy and other grasses
  • Keeps hay green with a fresh smell, the maker says
  • Non-corrosive, and safe for all livestock including horses
  • Will not freeze or lose strength if the container stays sealed
  • A 50-gallon drum treats up to 100 tons of hay
Full specifications
Active ingredientsPropionic acid 64.5%; citric acid 5.0%
pH6.0
Bale moistureUp to 30%
Tote1,800 lbs/200 gal; 2,380 lbs/270 gal
Drum450 lbs/50 gal
Mini drum120 lbs/15 gal
Rate, small square and round, 23% - 26% hay moisture8 lbs/ton (stem moisture); 6 lbs/ton (dew moisture only)
Rate, large square, 23% - 26% hay moisture10 lbs/ton (stem moisture); 8 lbs/ton (dew moisture only)
Rate, 27% - 30% hay moistureSmall square and round: 16 lbs/ton (stem moisture); 12 lbs/ton (dew moisture only). Large square: do not bale (stem moisture); 16 lbs/ton (dew moisture only)
EPA registration73877-1-39376

Source: Harvest Tec Solutions Brochure 2026, pages 12-13.

Cutaway drawing of a round baler showing Harvest Tec H2O disc moisture sensors on the bale chamber walls

Harvest Tec moisture system

Harvest Tec H2O Precision Moisture Sensor

On-board moisture readings for operators who do not need a full preservative applicator.

60%max, round and large square
32%max, small square
3 secreading interval
  • Star wheels for square balers, disc sensors for round balers
  • Uses your Apple or Android phone or tablet with the free H2O app
  • Hardwired connection with built-in device charging
  • Optional dye marker stripes wet bales red
Full specifications
FitsAny make or model of large, round, or small square baler
Moisture rangeUp to 60% (large square and round) / up to 32% (small square)
SensorsStar wheel (large and small squares); disc style (round balers)
DisplayApple or Android smart phone or tablet, free H2O app
Kit includesIn-chamber moisture sensors, processor control box, all harnesses and mounting components
Part numbers201LS (large square) / 201RBC and 201RB (round) / 201SS (small square)
Accessories200DM dye marker kit; 200FCA end of bale sensor kit; 1670DK and 4670DK display kits

Source: Harvest Tec Moisture Systems page.

Drawing of Harvest Tec dual star wheel moisture sensors in a large square baler chamber

Harvest Tec moisture system

Harvest Tec 700 Moisture Only System

The moisture sensors, baler integration and job records of a 700 Series applicator, with the option to add preservative later.

70%max, large square
60%max, round
32%max, small square
  • Baler integration and job records
  • Can be upgraded to a complete applicator system
  • Tablet display, or a tractor ISOBUS display with the 006-7670A harness
  • Kits for AGCO, Case IH, New Holland, John Deere, Claas and Krone balers
Full specifications
FitsAny make or model of large, round, or small square baler
Moisture rangeUp to 70% (large square) / up to 60% (round) / up to 32% (small square)
SensorsStar wheel (large and small squares); disc style (round balers)
DisplayApple or Android tablet, free Precision Baling App; ISOBUS display with 006-7670A adapter harness
Part numbers, large square700A / HT200A2 / 700BB / 700BBHD / 700J / 700CL / 700
Part numbers, round and small square700RB / 700SS

Source: Harvest Tec Moisture Systems page.

Drawing of a large square baler chamber with Harvest Tec microwave moisture sensors reading across the bale

Harvest Tec moisture system

Harvest Tec 77E Economy Microwave Moisture System

Non-contact microwave sensing across the full width of a large square bale.

6-40%moisture range
2microwave sensors
  • One transmitter and one receiver at the back of the bale chamber
  • Shows on most baler ISO displays, or a tablet
  • Reads every stuffer stroke, the maker says
  • Optional 740DM dye marker marks wet flakes
Full specifications
FitsAny make or model of large square baler
Moisture range6% up to 40%
Sensors2 microwave moisture sensors (1 transmitter, 1 receiver), mounted at the back of the bale chamber
DisplayMost baler ISO displays, or Apple or Android tablet
Part number77E
Accessories740DM dye marker kit; 006-765FMX 25' extension harness for Staheli West steamer

Source: Harvest Tec Moisture Systems page.

AGCO SimplEbale baler monitor with a moisture reading on screen

Harvest Tec moisture system

Harvest Tec SimplEbale Moisture Sensors

Plug-and-play star wheel moisture sensing for Massey Ferguson small square balers.

32%max moisture
15 mininstall and activate
  • Powered by the SimplEbale controller; no extra tractor harness
  • Moisture shows on the SimplEbale monitor
  • Reads both chambers on the SB.1436DB double baler
  • Optional HT238DM dye marker
Full specifications
FitsMassey Ferguson 1800 Series and SB.1436DB small square balers with SimplEbale
Moisture rangeUp to 32%
SensorsIn-chamber star wheel moisture sensors
DisplaySimplEbale monitor
Part numbersHT202A2 (1800 Series) / HT204A2 (SB.1436DB)

Source: Harvest Tec Moisture Systems page.

Harvest Tec moisture system

Harvest Tec Forage Harvester H2O

A standalone moisture system for any make or model of forage harvester.

40-75%moisture range
+/- 3points accuracy
  • Pad-style sensors fit in the spout of self-propelled or pull-type harvesters
  • Continuous moisture readout while chopping
  • Two scales: corn and hay
  • A fifth the cost of NIR with similar accuracy, the maker says
Full specifications
FitsAny make or model of pull-type or self-propelled forage harvester
Moisture range40% - 75%
SensorsIn-spout pad-style moisture sensors
DisplayApple or Android smart phone or tablet, free H2O app
Accuracy+/- 3 points
Scale offset+/- 8 points
Moisture scalesCorn & Hay

Source: Harvest Tec Forage Harvester H2O page.

Harvest Tec Model 655 yellow tank mounted on the tongue of a red New Holland pull-type forage harvester

Harvest Tec harvester applicator

Harvest Tec Model 655

Inoculant applicator and blower band lubricator for pull-type forage harvesters.

55gal tank
12-voltfixed rate pump
4spray tips supplied
  • Tank straddles the implement tongue on U-bolt clamps
  • Blower band nozzle kit reduces gumming in haylage
  • On/off switch for the tractor
  • Filter, check valves, quick-disconnects and wiring included
Full specifications
FitsPull-type forage harvesters
Tank55-gallon (200L), straddles implement tongue
Pump12-volt fixed rate pump
Rate controlChanging spray tip (4 supplied)
ControlsOn/off switch for tractor

Source: Harvest Tec Forage Harvester Applicator page.

Harvest Tec Model 675 tank mounted on the fender of a Claas self-propelled forage harvester

Harvest Tec harvester applicator

Harvest Tec Model 675

Fender-mounted applicator for self-propelled forage harvesters.

100gal tank
1.7GPM pump
  • Water for blower lubrication, or inoculant and all preservatives
  • In-cab electronic rate controller
  • 4 stainless steel tips
  • Install kits for John Deere 6000, Claas Jaguar and New Holland
Full specifications
FitsSelf-propelled forage harvesters: 6704 John Deere 6000 Series / 6705 Claas Jaguar Series / 6706 New Holland
Tank100-gallon (375L), mounts on the fender
PumpPositive displacement plastic diaphragm pump rated at 1.7 GPM (6.4 LPM)
Rate controlIn-cab electronic rate controller, 4 stainless steel tips
Gauge100 PSI gauge isolator

Source: Harvest Tec Forage Harvester Applicator page.

John Deere 7000 Series forage harvester with a Harvest Tec Model 676 tank, inset close-up of the tank

Harvest Tec harvester applicator

Harvest Tec Model 676

Built with John Deere for the 7000 Series self-propelled harvesters.

90gal tank
12-voltelectric pump
  • Turns on and off with the harvester intake rolls
  • All plumbing and electrical parts included
Full specifications
FitsJohn Deere 7000 Series forage harvesters
Tank90-gallon plastic tank
Pump12-volt electric pump
Rate controlRegulation by changing tips

Source: Harvest Tec Forage Harvester Applicator page.

Baler preservative applicators at a glance

Model700 Series Automatic ApplicatorElectronic Applicator
ControlBaler ISOBUS display, dedicated Virtual Terminal, or tabletCab-mounted control box with on/off toggle switch and rheostat dial
PumpSingle bypass pump supplying constant pressure to pulsing solenoid(s)Single pump and gauge
Moisture sensorsIncluded: disc style (round balers); star wheel (small and large square balers)Not listed
Tank sizes, round and small square balers25 and 55-gallon25 and 55-gallon
Tank sizes, large square balers100 or 110-gallon100-gallon

Moisture sensors at a glance

ModelH2O Precision Moisture Sensor700 Moisture Only System77E Economy Microwave Moisture SystemSimplEbale Moisture SensorsForage Harvester H2O
FitsAny make or model of large, round, or small square balerAny make or model of large, round, or small square balerAny make or model of large square balerMassey Ferguson 1800 Series and SB.1436DB small square balers with SimplEbaleAny make or model of pull-type or self-propelled forage harvester
Moisture rangeUp to 60% (large square and round) / up to 32% (small square)Up to 70% (large square) / up to 60% (round) / up to 32% (small square)6% up to 40%Up to 32%40% - 75%
SensorsStar wheel (large and small squares); disc style (round balers)Star wheel (large and small squares); disc style (round balers)2 microwave moisture sensors (1 transmitter, 1 receiver), mounted at the back of the bale chamberIn-chamber star wheel moisture sensorsIn-spout pad-style moisture sensors
DisplayApple or Android smart phone or tablet, free H2O appApple or Android tablet, free Precision Baling App; ISOBUS display with 006-7670A adapter harnessMost baler ISO displays, or Apple or Android tabletSimplEbale monitorApple or Android smart phone or tablet, free H2O app

Forage harvester applicators at a glance

ModelModel 655Model 675Model 676
FitsPull-type forage harvestersSelf-propelled forage harvesters: 6704 John Deere 6000 Series / 6705 Claas Jaguar Series / 6706 New HollandJohn Deere 7000 Series forage harvesters
Tank55-gallon (200L), straddles implement tongue100-gallon (375L), mounts on the fender90-gallon plastic tank
Pump12-volt fixed rate pumpPositive displacement plastic diaphragm pump rated at 1.7 GPM (6.4 LPM)12-volt electric pump
Rate controlChanging spray tip (4 supplied)In-cab electronic rate controller, 4 stainless steel tipsRegulation by changing tips

Genuine Harvest Tec parts

Clinton Tractor's parts counter orders genuine Harvest Tec parts. Harvest Tec's online catalog lists replacement parts by applicator series and baler, including discontinued 400, 500 and 600 Series systems. The serial number on the processor tells you which system you have. Repairs and returns go through your dealer, who requests a Return Authorization from Harvest Tec.

  • Pump plates
  • Star wheels
  • Bale rate sensors
  • Solenoid packages
  • Spray shields
  • Install kits
  • Hose & drain fill kits
  • Harnesses
  • Display kits
  • Crop eyes
  • Dye markers
  • Tanks
Ask the parts counter

Service department

Clinton Tractor's shop works out of 31 Meadow St. Call the service desk with the make and model, the work it needs and whether we have seen it before, and they will tell you what the shop can take on.

Call the service desk

How Harvest Tec applicators work

12-month warranty

Harvest Tec repairs or replaces components found defective within 12 months from the date of manufacture.

Warranty terms

Harvest Tec®, LLC. will repair or replace components that are found to be defective within 12 months from the date of manufacture.

The part must be returned within 30 days of the failure, through the selling dealer and distributor, transportation charges prepaid.

The warranty does not cover parts that were misused, altered or damaged in an accident, or systems repaired with parts not made by Harvest Tec.

Hudson, Wisconsin, since 1976

Harvest Tec has designed hay and forage products since 1976.

About the maker

Harvest Tec, your trusted advisor for hay and forage solutions since 1976.

2821 Harvey St. Hudson, WI 54016

Options

Harvest Tec lists these add-ons for its applicators and moisture systems. Many fit only 700 Series systems, so ask us which ones suit your baler.

Also available

Find us in Clinton

The yard, the parts counter and the shop share one address, about a quarter of an hour from Utica.

Clinton Tractor & Implement Co.
31 Meadow St, Clinton, NY 13323
Monday–Friday 7:00 am – 5:00 pm, Saturday 7:00 am – 12:00 pm, closed Sunday
Get directions(315) 853-6151

Driving distance

  • New Hartford 6 mi
  • Utica 9 mi
  • Rome 14 mi
  • Oneida 17 mi
  • Hamilton 20 mi
  • Herkimer 26 mi
  • Cazenovia 31 mi
  • Norwich 42 mi
  • Cooperstown 47 mi
  • Syracuse 49 mi
  • Oneonta 60 mi
  • Cortland 61 mi

Before you visit

Can I see Harvest Tec applicators and moisture systems in person?

Call (315) 853-6151 before you drive over and ask which Harvest Tec applicators and moisture systems we can show you. The yard is at 31 Meadow St, Clinton, open Monday–Friday 7:00 am – 5:00 pm and Saturday 7:00 am – 12:00 pm.

Can you order a model that is not on the lot?

Ask the sales desk at (315) 853-6151. Tell us the model and how you will use it, and we will check what we can get.

Do you take trade-ins?

Ask the sales desk at (315) 853-6151 and describe the machine you want to trade.

Is financing available?

Ask the sales desk at (315) 853-6151 about payment options for the model you are looking at.

How do I ask about a repair?

Call the service desk at (315) 853-6151 with the make and model, the work it needs and whether we have seen it before. They will tell you what the shop can take on.