Page 1 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

ConTegoTM Pro SL

Plant Growth Regulator

SOLUBLE LIQUID

S-Abscisic Acid (10.0%)

FOR USE ON 

ORNAMENTAL PLANTS

Active Ingredient

S-Abscisic Acid ........................................................................................................ 10.0% w/v

Other Ingredients...................................................................................................... 90.0% w/v

Total......................................................................................................................... 100.0% w/v

Contains a total of 10 g of Abscisic Acid (S-ABA) in 100 ml of product. S-Abscisic acid, commonly 

known as S-ABA, is a naturally occurring growth regulator found in plants. Application of S-ABA to 

ornamental plants causes stomata to close, reduces water usage, and thus allows plants to conserve water

and withstand environmental stress.

This container will treat 1890 square feet when applied at the maximum rate. 

KEEP OUT OF REACH OF CHILDREN

CAUTION

See next panel for First Aid Information.

EPA Registration No. 73049-UAE

EPA Establishment No. 33762-IA-001

This label must be in the possession of the user at the time of pesticide application. 

Permittee: 

Valent BioSciences Corporation

870 Technology Way

Libertyville, IL 60048

1-847-968-4700

Net Contents: 34 fl. oz. (1000 ml) 
 Page 2 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

FIRST AID

If in eyes  Hold eye open and rinse slowly and gently with water for 15-20 

minutes.

 Remove contact lenses, if present, after the first 5 minutes, then 

continue rinsing eye.

 Call a poison control center or doctor for treatment advice. 

HOT LINE NUMBER

Have the product container or label with you when calling a poison control center or doctor, or going 

for treatment. You may also call toll-free 1-800-892-0099 (24 hours) for emergency medical treatment 

and/or transport emergency information. For all other information, call 1-847-968-4700.

PRECAUTIONARY STATEMENTS

HAZARDS TO HUMANS & DOMESTIC ANIMALS

CAUTION: Causes moderate eye irritation. Avoid contact with eyes or clothing. 

Wash thoroughly with soap and water after handling and before eating, drinking, 

chewing gum, using tobacco or using the toilet.

Personal Protective Equipment (PPE)

Applicators and other handlers must wear:

 Long-sleeved shirt and long pants.

 Shoes plus socks.

Follow the manufacturer's instructions for cleaning/maintaining PPE. If no such 

instructions for washables, use detergent and hot water. Keep and wash PPE separately 

from other laundry.

User Safety Recommendations

Users should:

 Wash hands before eating, drinking, chewing gum, using tobacco or using the 

toilet

 Remove clothing/PPE immediately if pesticide gets inside. Then wash 

thoroughly and put on clean clothing.

 Remove PPE immediately after handling this product. As soon as possible, 

wash thoroughly and change into clean clothing. 
 Page 3 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

ENVIRONMENTAL HAZARDS

Do not apply directly to water, or to areas where surface water is present or to intertidal 

areas below the mean high water mark. Do not contaminate water when disposing of 

equipment wash-water or rinsate. 

DIRECTIONS FOR USE

It is a violation of Federal law to use this product in a manner inconsistent with the terms 

of the Label. Do not apply this product in a way that will contact workers or other 

persons, either directly or through drift. Only protected handlers may be in the area 

during application. For any requirements specific to your State or Tribe, consult the State 

or Tribal agency responsible for pesticide regulation.

AGRICULTURAL USE REQUIREMENTS

Use this product only in accordance with its labeling and with the Worker Protection 

Standard, 40 CFR Part 170. This Standard contains requirements for the protection of 

agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of 

agricultural pesticides. It contains requirements for training, decontamination, notification, 

and emergency assistance. It also contains specific instructions and exceptions pertaining to 

the statements on this label about personal protective equipment (PPE), and restricted-entry

interval. The requirements in this box only apply to uses of this product that are covered by 

the Worker Protection Standard.

Do not enter or allow worker entry into treated areas during the restricted entry interval 

(REI) of 4 hours.

PPE required for early entry to treated areas that is permitted under the Worker Protection 

Standard and that involves contact with anything that has been treated, such as plants, soil, 

or water is:

 Long-sleeved shirt and long pants (or Coveralls).

 Chemical resistant gloves (made of any waterproof material).

 Shoes plus socks.
 Page 4 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

GENERAL DIRECTIONS FOR USE ON ORNAMENTALS

Use only as directed. Read the label thoroughly and make sure it is understood before

making applications. ConTegoTM Pro SL reduces transpiration and delays wilting of 

ornamental plants caused by environmental stresses.

Application instructions:

 ConTegoTM Pro SL contains the active ingredient S-abscisic acid, commonly

known as S-ABA. S-ABA is a potent Plant Growth Regulator, a naturally

occurring biochemical found in plants. 

 Under drought conditions, endogenous S-ABA levels increase in leaves. S-ABA 

in turn signals stomata to close and thus reduces water loss and controls water

usage by the plant. Similarly, exogenous application of S-ABA causes stomata to 

close, reduces water usage, and thus allows plants to conserve water. S-ABA 

significantly reduces transpiration and delays wilting of ornamental plants caused 

by environmental stress, resulting in more desirable plants. 

 Undesired effects can result from any deviations from the label directions in the 

rates, timings, water volumes, or the adoption of untested spray mixes, when 

applying ConTegoTM Pro SL.

 To prepare the treatment solution, add the required amount ConTegoTM Pro SL

to a clean spray tank about half-filled with the water. Agitate while bringing the 

total volume of water to the required level. Mix thoroughly with agitation and 

bypass circulation to completely mix the ConTegoTM Pro SL, and then add 

surfactant. Discard any unused treatment solution at the end of each day

following local, state or federal law.

 Best results will be achieved from applications during the cooler parts of the 

day, avoiding the hottest period of the day. To maximize absorption and 

optimize product effectiveness, apply ConTegoTM Pro SL under slow drying 

conditions, e.g. early in the morning or in the evening (cool to warm 

temperatures, medium to high relative humidity, and no wind).

 Do not apply ConTegoTM Pro SL to plants under stress (e.g. heat, water, disease 

and insect). Injured or stressed plants will show a reduced response to 

ConTegoTM Pro SL or may show phytotoxicity.

 Do not overhead irrigate treated plants for at least 6 hours following application 

of ConTegoTM Pro SL.
 Page 5 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

COMPATIBILITY WITH OTHER AGRICULTURAL PRODUCTS

Compatibility and performance data for ConTegoTM Pro SL with other agricultural 

products is not available. Do not mix with other agricultural products except an

adjuvant (surfactant) suitable for use on ornamental plants.

APPLICATIONS, RATES, AND TIMINGS

ORNAMENTAL PLANTS (NON-FOOD CROPS)

CROP OBJECTIVE /

BENEFIT

APPLICATION 

INSTRUCTIONS

Ornamental plants such as 

potted flowers, bedding, 

perennial, nursery and foliage 

plants.

Although extensive testing has 

been conducted with 

ConTegoTM Pro SL, not all 

varieties of ornamental plants 

have been evaluated. It is 

highly recommended that a 

small number of plants be 

tested for undesirable effects of 

ConTegoTM Pro SL before 

treating a large number of 

plants. 

For reduction 

of stress from 

lack of water 

and delay of 

wilting in 

production 

and postproduction of 

ornamental 

plants.

Contact 

Valent 

BioSciences 

Corporation 

for more 

information.

Spray Applications: Apply

up to 2.4 ounces of ConTegoTM

Pro SL) per gallon as a foliar

spray to fully hydrated plants 

at 2-3 quarts of final use 

solution /100 square feet. 

Ensure adequate coverage of 

the plant.

Table 1: ConTegoTM Pro SL - Dilution Table for ORNAMENTALS

PPM S-ABA 

Desired

Fluid Oz. 

Per 

Gallon

Fluid Oz. 

Per 

10 Gallons

Milliliters 

Per 

Gallon

Milliliters 

Per 

10 Gallons

125 0.15 1.5 4.8 48

250 0.3 3.0 9.5 95

500 0.6 6.0 19.0 190

1000 1.2 12.0 38.0 380

2000 2.4 24.0 76.0 760
 Page 6 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

FACTORS AFFECTING ORNAMENTAL PLANT 

RESPONSE TO ConTegoTM Pro SL

S-ABA is a potent Plant Growth Regulator, a naturally occurring biochemical

found in plants. S-ABA signals stomata to close and thus reduces water loss 

and controls water usage by the plant. S-ABA significantly reduces 

transpiration and delays wilting of ornamental plants caused by environmental 

stress, resulting in more desirable plants. 

In addition to proper application technique, environmental and cultural factors 

will affect a plant’s response to treatment with ConTegoTM Pro SL. 

Different varieties or cultivars within a given plant species may require a 

higher or lower rate of ConTegoTM Pro SL to achieve the desired delay in 

wilting.

Temperature and humidity can be an important factor in a plant’s response to 

ConTegoTM Pro SL. Hot dry weather will result in a shorter duration of effect 

from S-ABA applications.

Apply in the morning or evening when conditions are best for slow drying of 

applied material, in order to ensure adequate absorption of the product. 

Overhead irrigation within 6 hours after application will reduce product activity.

Use of Adjuvants: An adjuvant suitable for use on ornamental plants will 

likely increase ConTegoTM Pro SL product uptake, efficacy and potential for 

negative effects. For optimal response, use ConTego with Capsil at 6 ounces 

per 100 gallons. 

Determining Optimal Rates: Optimal ConTegoTM Pro SL rates will vary

according to the desired wilt delay, growing conditions & practices, application 

technique, and environmental conditions. Different varieties or cultivars of the 

same species may respond differently to ConTegoTM Pro SL. Therefore, to 

determine response levels and or phyto-toxicity potential, treat a small number 

of plants (using application rates specified in Table 1) before applying 

ConTegoTM Pro SL to a large number of plants. With increasing temperature 

and lower humidity consider using the higher rates within the range given in 

Table 1, remembering not to apply to plants that are already under stress. 

DO NOT exceed the maximum stated rate from Table 1.
 Page 7 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

CHEMIGATION

Apply this product only through the following systems:

1) Overhead sprinklers, such as impact, micro-sprinklers, or booms.

Do not apply this product through any other type of irrigation system. Crop injury, lack 

of effectiveness, or illegal pesticide residues in the crop can result from non-uniform 

distribution of treated water. If you have questions about calibration, you should contact 

State Extension Service specialists, equipment manufacturers or other experts. Do not 

connect an irrigation system (including greenhouse systems) used for pesticide 

application to a public water system unless the pesticide label prescribed safety devices 

for public water systems are in place. A person knowledgeable of the chemigation 

system and responsible for its operation or under the supervision of the responsible 

person, shall shut the system down and make necessary adjustments should the need 

arise.

CHEMIGATION SYSTEMS CONNECTED TO PUBLIC WATER SYSTEMS

Public water system means a system for the provision to the public of piped water for 

human consumption if such system has at least 15 service connections or regularly serves 

an average of at least 25 individuals daily at least 60 days out of the year. Chemigation 

systems connected to public water systems must contain a functional, reduced pressure 

zone, backflow preventer (RPZ) or the functional equivalent in the water supply line 

upstream from the point of pesticide introduction. As an option to the RPZ, the water 

from the public water system should be discharged into a reservoir tank prior to pesticide 

introduction. There shall be a complete physical break (air gap) between the outlet end of 

the fill pipe and the top or overflow rim of the reservoir tank of at least twice the inside 

diameter of the fill pipe. The pesticide injection pipeline must contain a functional, 

automatic, quick closing check valve to prevent the flow of fluid back toward the 

injection pump.

The pesticide injection pipeline must contain a functional, normally closed, solenoidoperated valve located on the intake side of the injection pump and connected to the 

system interlock to prevent fluid from being withdrawn from the supply tank when the 

irrigation system is either automatically or manually shut down. The system must 

contain functional interlocking controls to automatically shut off the pesticide injection 

pump when the water pump motor stops, or in cases where there is no water pump, when 

the water pressure decreases to the point where pesticide distribution is adversely 

affected. Systems must use a metering pump, such as a positive displacement injection 

pump (e.g. diaphragm pump) effectively designed and constructed of materials that are 

compatible with pesticides and capable of being fitted with a system interlock.
 Page 8 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

SPRINKLER and SPRAY - IRRIGATION

The system must contain a functional check valve, vacuum relief valve, and low-pressure 

drain appropriately located on the irrigation pipeline to prevent water source 

contamination from backflow.

The pesticide injection pipeline must contain a functional, automatic, quick closing check 

valve to prevent the flow of fluid back toward the injection pump.

The pesticide injection pipeline must also contain a functional, normally closed, solenoidoperated valve located on the intake side of the injection pump and connected to the 

system interlock to prevent fluid from being withdrawn from the supply tank when the 

irrigation system is either automatically or manually shut down.

The system must contain functional interlocking controls to automatically shut off the 

pesticide injection pump when the water pump motor stops. 

The irrigation line or water pump must include a functional pressure switch, which will 

stop the water pump motor when the water pressure decreases to the point where 

pesticide distribution is adversely affected.

Systems must use a metering pump, such as a positive displacement injection pump (e.g. 

diaphragm pump) effectively designed and constructed of materials that are compatible 

with pesticides and capable of being fitted with a system interlock.

Fill the supply tank with the desired amount of water. Then add the amount of 

ConTegoTM Pro SL required in order to achieve the selected final use solution rate. 

Agitate the mixture of ConTegoTM Pro SL frequently during the chemigation period to 

assure a uniform distribution throughout the system. 

Apply ConTegoTM Pro SL continuously for the duration of the water application but do 

not exceed maximum rates and volumes stated in Table 1. For overhead applications 

apply at a volume of 2 to 3 quarts of final use solution per 100 sq. ft. 
 Page 9 of 9 S-Abscisic acid, (S-ABA)

 Ornamental – Soluble Liquid – Use Label

STORAGE AND DISPOSAL

Do not contaminate water, food or feed by storage or disposal.

Pesticide Storage

Keep container tightly closed when not in use. Store product in a cool and dry place. Avoid 

extended storage conditions at temperatures above 25°C (77°F). Avoid exposure of product 

to light or sunlight.

Pesticide Disposal

To avoid wastes, use all material in this container by application according to label 

directions. If wastes cannot be avoided, offer remaining product to a waste disposal facility

or pesticide disposal program (often such programs are run by state or local governments or 

by industry).

Container Handling

Nonrefillable container. Do not reuse or refill this container. Triple rinse container (or 

equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining contents 

into application equipment or a mix tank and drain for 10 seconds after flow begins to drip. 

Fill the container 1⁄4 full with water and recap. Shake for 10 seconds. Pour rinsate into 

application equipment or a mix tank or store rinsate for later use or disposal. Drain for 10 

seconds after the flow begins to drip. Repeat this procedure two more times. Offer for 

recycling, if available or puncture and dispose of the container in a sanitary landfill, or by

other procedures approved by state and local authorities.

Warranty and Disclaimer Statement:

To the fullest extent permitted by law, seller makes no warranty, express or implied, of 

merchantability, fitness or otherwise concerning use of this product other than as 

indicated on the label. User assumes all risks of use, storage or handling not in strict 

accordance with accompanying directions.

Valent BioSciences Corp. ©2009