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Friday
Oct312014

California Citrus Exporters:

 

The California Citrus Quality Council (CCQC) received notification this week that Korea’s Ministry of Food and Drug Safety (MFDS) has lowered the MRLs for 2,4-D from 2 ppm to .05 ppm for oranges, .15 for grapefruit and 1 ppm for lemons.  The new MRLs go into effect on Nov. 4 in Korea.

 

CCQC has been working with MFDS and the 2,4-D Task Force for the past two years to establish MRLs for 2,4-D in Korea.  It was our expectation that MFDS would harmonize the MRL with the U.S. tolerance of 3 ppm or the Codex MRL of 1 ppm.  However, MFDS set the MRLs considerably lower than the U.S. and Codex MRLs.

 

Included below is a table that shows the residues that result from various 2,4-D uses.  These values were derived from field trials conducted by CCQC to maintain the registration of 2,4-D on citrus in 1995.  While the residue trials indicate that residues are not likely to exceed the new MRL levels, commercial conditions can vary and errors can occur.  CCQC recommends that packinghouses conduct periodic residue sampling to confirm that Korean shipments are within the new MRL levels.

 

Additionally, given the uncomfortably low MRL for Korea, CCQC recommends packinghouses alert growers, packinghouse managers and field staff to take precautions and care in the use of 2-4,D.

 

CCQC plans to communicate our concerns to MFDS, and work with AMVAC representatives, the Foreign Agricultural Service and the Environmental Protection Agency to determine if the 2,4-D MRLs can be increased.

 

Please contact me by telephone at (530) 885-1894 or via e-mail at jcranney@calcitrusquality.org if you have questions or need additional information.

 

Regards,

Jim

 

 

 

U.S. Tolerance

New Korea MRL

Rate

PHI

Residue from Field Trials

Navel Oranges

3 ppm

.05 ppm

16 & 24 ppm

7 days

<.05 ppm

 

 

 

24 ppm w/ hydrated lime

7 days

<.05 ppm

Grapefruit

3 ppm

.15 ppm

24 ppm

7 days

<.05 ppm

 

 

 

24 ppm and 4 ppm w/oil

0 days after 4 ppm treatment

<.05 ppm

 

 

 

24 ppm and 4 ppm w/oil and 24 ppm

0 days after 24 ppm treatment

.0577-.079 ppm

Lemons

3 ppm

1 ppm

12 ppm

7 days

<.05 ppm

 

 

 

12 ppm and 500 ppm postharvest treatment

0 days after 500 ppm treatment

.34 -.593 ppm

 

 

 

12 ppm and 500 ppm postharvest treatment

28 days after 500 ppm treatment

.274-.448

 

 

 

12 ppm and 500 ppm postharvest treatment

56 days after 500 ppm treatment

.486-.639

 

 

 

12 ppm and 500 ppm postharvest treatment

112 days after 500 ppm treatment

.346-.531

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