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Home > Ag Chemicals & Fertilizers > Pesticides > Imprelis Information > Imprelis Survey Results

Imprelis Survey Results


In June 2011 the Minnesota Department of Agriculture (MDA) began receiving reports that a new herbicide, registered by DuPont under the trade name Imprelis (active ingredient: aminocyclopyrachior), may be linked to non-target plant injury. In order to better understand the situation possibly linked to use of Imprelis in Minnesota the MDA sent out a letter on June 27, 2011 to all licensed pesticide managers asking them to fill out and return an anonymous online survey by July 11. The purpose of the informal survey was not to receive statistically valid information, but rather to quickly gather information.

Note: This nonstatistical, anonymous survey was conducted early in July as the issue was unfolding and does not represent anything more than a snapshot in time.

Survey questions: 

1.

Approximately how many properties have received an Imprelis application?
(106 participants responded; of the 106 respondents, 26 had applied Imprelis)

6197

2.

Of those properties that received an Imprelis application, how many have signs or symptoms of non-target plant injury?

892

3.

On properties where you have observed non-target plant injury possibly associated with an Imprelis application, how many have the following injuries:

 

 

None

Some

Many

Most

 

Dieback of tissue on new growth on conifers

9

7

3

7

 

Death of conifers

11

12

2

1

 

Curling, stunting of deciduous trees

18

6

0

2

 

Death of deciduous trees

23

3

0

0

 

Curling, stunting of ornamental plants

16

8

2

0

 

Death of ornamental plants

21

5

0

0

 

Other

22

2

0

2

4.

In general how concerned are you about this issue?

 

 

Not At All

Slightly

Somewhat

Very

 

 

32

13

24

37

5.

Do you plan to use Imprelis in future pesticide applications?

 

 

Yes

No

 

 

12

94