William Pear Stop Drop
Selective, Systemic growth regulator acts as a synthetic Auxin. Moves mainly in the plant via xylem and phloem. Effectively reduces pre mature falling of William Pears.
| William Pear Stop Drop | |
|---|---|
Product Type |
Growth Regulator |
Active Ingredient |
22.8g/L 2,4-D Sodium |
Pack Size |
100ml, 500ml, 1L, 5L |
APVMA Registration # |
49335
Search APVMA number at APVMA PubCRIS. |
Profile
- 2,4-D Sodium Salt controls premature fruit drop of William Pears by acting as a synthetic auxin, mimicking the plant’s natural growth hormone
- When applied at a recommended rate, it maintains auxin levels in the fruit abscission zone, reduces tissue sensitivity to ethylene, and stimulates cell division and elongation in the attachment area
- This strengthens the connection between the fruit and the plant, helping to retain fruit until maturity, minimise pre-harvest losses, and improve overall yield and fruit quality
Key Features & Benefits
- Synthetic auxin formulation: Mimics natural plant hormones to regulate fruit retention
- Reduces premature fruit drop: Maintains auxin levels in the abscission zone and decreases ethylene sensitivity, keeping fruit attached until harvest
- Improves yield and fruit quality: Minimizes pre-harvest losses and ensures uniform, marketable fruit
- Enhances crop management: Helps growers achieve consistent fruit size and quality with minimal manual intervention
- Targeted application for William Pear: Optimized for pome fruit, particularly William Pear, to maximize productivity and profitability
Application Guide
| Situation | Rate & Directions | Critical Comments |
|---|---|---|
| William pears (canning) All states except Tasmania |
Add 100ml to 450L of water, with agitation. Apply four to six weeks before first pick. |
Use only at dilution rate specified. Ensure thorough spray coverage. The addition of a wetting agent, with agitation, improves sticking. Withholding period: Do not harvest for 4 weeks after application. Product to be used exclusively for canning pears. |
| Apply Kendon William Pear Stop Drop by vertical sprayer following the Application Guide above. Observe mandatory downwind buffer zones — see the Spray Drift Buffer Zones table in FAQ 5 below. Always download and read the current product label before use and follow all regulatory and safety instructions. | ||
What is Kendon William Pear Stop Drop and what is it used for?
Kendon William Pear Stop Drop is a Group I herbicide formulated to reduce premature falling of William pears. It is registered for use on canning pears in all states except Tasmania.
What is the active constituent in Kendon William Pear Stop Drop?
The active constituent is 22.8g/L 2,4-D as the Sodium Salt. It is a member of the Phenoxy group of herbicides. The product has the disruptors of plant cell growth mode of action (Group I).
How do I apply Kendon William Pear Stop Drop?
Add 100ml to 450L of water with agitation. The addition of a wetting agent, with agitation, improves sticking. Apply four to six weeks before first pick. Ensure thorough spray coverage and use only at the dilution rate specified in the Application Guide on this page. Do not harvest for 4 weeks after application.
Full application details, including spray equipment requirements and mandatory buffer zones for vertical sprayers, are set out in the Application Guide on this page and in the current product label.
Always download and read the current product label before use. This product is not to be used for any purpose or in any manner contrary to the label unless authorised under appropriate legislation.
Full application details, including spray equipment requirements and mandatory buffer zones for vertical sprayers, are set out in the Application Guide on this page and in the current product label.
Always download and read the current product label before use. This product is not to be used for any purpose or in any manner contrary to the label unless authorised under appropriate legislation.
What are the key restraints and "DO NOT" requirements for Kendon William Pear Stop Drop?
The following restraints apply:
- DO NOT apply if heavy rains or storms are forecast within 3 days.
- DO NOT irrigate to the point of runoff for at least 3 days after application.
- DO NOT apply if a crop is stressed due to dry or excessively moist conditions.
- DO NOT apply a second 2,4-D spray.
- DO NOT use on any other pear varieties.
- DO NOT apply by a boom sprayer.
- DO NOT apply by aircraft.
- DO NOT apply unless the wind speed is between 3 and 20 kilometres per hour at the application site during the time of application.
- DO NOT apply if there are hazardous surface temperature inversion conditions present at the application site during the time of application. Surface temperature inversion conditions exist most evenings one to two hours before sunset and persist until one to two hours after sunrise.
- DO NOT allow bystanders to come into contact with the spray cloud.
- DO NOT apply in a manner that may cause an unacceptable impact to native vegetation, agricultural crops, landscaped gardens and aquaculture production, or cause contamination of plant or livestock commodities outside the application site from spray drift.
What spray drift precautions apply when using Kendon William Pear Stop Drop?
This is a phenoxy herbicide that can cause severe damage to native vegetation and susceptible crops such as cotton, grapes, tomatoes, oilseed crops and ornamentals. DO NOT apply under weather conditions, or from spraying equipment, that may cause spray to drift onto nearby susceptible plants/crops, cropping lands or pastures. Avoid spray drift and vapour movement onto susceptible crops such as cotton, tobacco, tomatoes, vines, lupins, fruit trees and ornamentals.
Where application is by vertical sprayer, the following mandatory downwind buffer zones apply:
Where application is by vertical sprayer, the following mandatory downwind buffer zones apply:
| Type of Target Canopy and Dilute Water Rate | Mandatory Downwind Buffer Zones (metres) | ||||
|---|---|---|---|---|---|
| Bystander Areas | Natural Aquatic Areas | Pollinator Areas | Vegetation Areas | Livestock Areas | |
| 2 metres tall and shorter, maximum dilute water rate of 1000L/ha | 0 metres | 0 metres | 0 metres | 0 metres | 0 metres |
| Taller than 2 metres (not fully foliated), maximum dilute water rate of 4000L/ha | 15 metres | 15 metres | |||
| Taller than 2 metres (fully foliated), maximum dilute water rate of 4000L/ha | 10 metres | 5 metres | |||
| Buffer zones apply to vertical sprayer application only. Specific definitions for terms used above can be found at apvma.gov.au/spraydrift. Always download and read the current product label before use. | |||||
What personal protective equipment (PPE) is required, and when can workers re-enter treated areas after applying Kendon William Pear Stop Drop?
When opening the container and preparing spray: Wear cotton overalls buttoned to the neck and wrist, a washable hat, elbow-length chemical resistant gloves and a face shield or goggles.
When using the prepared spray: Wear cotton overalls buttoned to the neck and wrist and a washable hat.
After use and before eating, drinking or smoking, wash hands, arms and face thoroughly with soap and water. After each day's use, wash gloves and contaminated clothing.
If re-entering treated areas before the spray has dried, workers should wear overalls, elbow-length gloves and water-resistant footwear. Clothing must be laundered after each day's use.
Additional safety information is listed in the Safety Data Sheet (SDS), which can be requested by clicking the Request SDS button on this page.
When using the prepared spray: Wear cotton overalls buttoned to the neck and wrist and a washable hat.
After use and before eating, drinking or smoking, wash hands, arms and face thoroughly with soap and water. After each day's use, wash gloves and contaminated clothing.
If re-entering treated areas before the spray has dried, workers should wear overalls, elbow-length gloves and water-resistant footwear. Clothing must be laundered after each day's use.
Additional safety information is listed in the Safety Data Sheet (SDS), which can be requested by clicking the Request SDS button on this page.
Is Kendon William Pear Stop Drop harmful to aquatic life or waterways?
Yes. This product is very toxic to aquatic life. DO NOT contaminate wetlands or watercourses with this product or used containers.
What are the first aid instructions and emergency contacts for Kendon William Pear Stop Drop?
The product causes serious eye irritation and may cause an allergic skin reaction. Avoid contact with the eyes. If poisoning occurs, contact a doctor or the Poisons Information Centre — Phone Australia 13 11 26.
For specialist advice in a chemical emergency, contact Kendon Plant Care on 03 9497 2822. In an emergency, dial 000 (Police or Fire Brigade).
Additional safety information is listed in the Safety Data Sheet (SDS), which can be requested by clicking the Request SDS button on this page.
How should Kendon William Pear Stop Drop be stored and disposed of?
Storage: Store in the closed, original container in a cool, well-ventilated area. Do not store for prolonged periods in direct sunlight.
Disposal: Triple-rinse containers before disposal. Add rinsings to the spray tank. Do not dispose of undiluted chemicals on site.
If recycling, replace the cap and return clean containers to a recycler or designated collection point. This container can be recycled if it is clean, dry, free of visible residues and has the drumMUSTER logo visible. Wash the outside of the container and the cap, then store the cleaned container in a sheltered place with the cap removed. It will then be acceptable for recycling at any drumMUSTER collection or similar container management program site. The cap should not be replaced but may be taken separately.
If not recycling, break, crush or puncture and deliver empty packaging to an approved waste management facility. If an approved waste management facility is not available, bury the empty packaging 500mm below the surface in a disposal pit specifically marked and set up for this purpose, clear of waterways, desirable vegetation and tree roots, in compliance with relevant local, state or territory government regulations. Do not burn empty containers or product.
Disposal: Triple-rinse containers before disposal. Add rinsings to the spray tank. Do not dispose of undiluted chemicals on site.
If recycling, replace the cap and return clean containers to a recycler or designated collection point. This container can be recycled if it is clean, dry, free of visible residues and has the drumMUSTER logo visible. Wash the outside of the container and the cap, then store the cleaned container in a sheltered place with the cap removed. It will then be acceptable for recycling at any drumMUSTER collection or similar container management program site. The cap should not be replaced but may be taken separately.
If not recycling, break, crush or puncture and deliver empty packaging to an approved waste management facility. If an approved waste management facility is not available, bury the empty packaging 500mm below the surface in a disposal pit specifically marked and set up for this purpose, clear of waterways, desirable vegetation and tree roots, in compliance with relevant local, state or territory government regulations. Do not burn empty containers or product.
Can repeated use of Kendon William Pear Stop Drop contribute to herbicide resistance?
Kendon William Pear Stop Drop is a Group I herbicide. Some naturally-occurring weed biotypes resistant to Kendon William Pear Stop Drop and other Group I herbicides may exist through normal genetic variability in any weed population. Resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds will not be controlled by Kendon William Pear Stop Drop or other Group I herbicides.
Where can I buy Kendon William Pear Stop Drop?
You can purchase this product from leading agricultural suppliers throughout Australia. If you are a grower and would like a distributor for larger quantities, send us a message on our contact us page requesting "William Pear Stop Drop" distributors near you.
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