The EPA is reassessing the use of hydrogen cyanamide (HiCane) and has provided a number of recommendations:
The EPA reassessment can be found here and is supported by a number of documents:
To mitigate drift, the EPA has recommended the following buffer zones:
Proposed bystander buffer zones
Note: ai means active ingredient
Note: The EPA are proposing the introduction of a maximum application rate of 25kg of ai per hectare. This means at 6% you can safely spray up to a volume of around 750L per hectare. Growers wishing to apply at 7% will be restricted to around 650L per hectare.
Proposed buffer zones to protect the aquatic environment (waterways)
In the risk assessment, the term aquatic environment is used to encompass any area of water that contains any of the aquatic species assessed (fish, aquatic invertebrates, aquatic plants/algae).
In terms of the proposed buffer zones, while the draft controls mention the aquatic environment, the tables set out particular distances to a downwind or downslope water body.
The EPA definition of a water body:
Water body – Includes all-natural and modified/artificial watercourses such as reservoirs, irrigation canals, water-supply races, canals for the supply of water for electricity generation or farm drainage, ditches, streams, rivers, ponds and lakes. For clarity, it excludes fully covered pipes, tanks or other enclosed structures, puddles or groundwater.
Watercourse or Waterway – Includes every river, stream, passage, and channel on or under the ground, whether natural or not, through which water flows, whether continuously or intermittently.
Proposed downwind buffer zones to protect non-target plants
In the risk assessment, the term “non-target plants” means plants that are not the intended pesticide target.
In terms of the proposed buffer zone distances for non-target plants, these are set in conjunction with clause 51 of the Hazardous Property Controls Notice 2017.
The EPA has stressed that the recommendations are initial proposals and subject to change based on submissions. NZKGI will provide a grower submission to the EPA, working alongside Maori Kiwifruit Growers Inc.
Growers can make their own submission. The EPA has asked that submitters (as much as possible) address the following points:
Environmental Protection Authority
Private Bag 63002
Submissions close Friday 26 November at 5 pm.
If you have any feedback on the recommendations, please email NZKGI Senior Policy Analyst, Sarah Cameron email@example.com