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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Citrus

General Pesticide Information

(Reviewed 7/03, updated 7/05)

In this Guideline:

TABLE 1. Mandatory Intervals Between Application, Reentry, and Harvest, and Hazards to Bees.
Common name Trade name and formulation Restricted entry interval 1 Preharvest interval Chemical class Hazards to bees2
abamectin* Agri-Mek 0.15EC 12 hrs 7 days macrocyclic lactone II
Clinch bait 12 hrs 0 macrocyclic lactone IV
acequinocyl Kanemite 12 hrs 7 days miscellaneous IV
acetamiprid Assail 70WP 12 hrs 7 days neonicotinoid III
azinphosmethyl* Guthion 2L 30 days 30 days organophosphate I
Bacillus thuringiensis ssp. aizawai# various 4 hrs 0 biological IV
Bacillus thuringiensis ssp. kurstaki# various 4 hrs 0 biological IV
buprofezin Applaud 70W 12 hrs 60 days insect growth regulator IV
carbaryl* Sevin 80S 12 hrs 5 days carbamate I
Sevin XLR Plus 12 hrs 5 days carbamate III
chlorpyrifos* Lorsban 4EC 5 days 21, 28, or 35 days3 organophosphate I
copper sulfate# various 1 day when dry inorganic fungicide IV
cryolite Kryocide 96WP, Prokil Cryolite 96 12 hrs 15 days miscellaneous IV
cyfluthrin* Baythroid 2E 12 hrs 0 pyrethroid I
dicofol Kelthane 4E 12 hrs 7 days organochlorine IV
diflubenzuron Micromite 12 hrs 21 days benzoylureas IV
dimethoate Dimethoate 400 and 2.67 2 days 15 days organophosphate I
fenpropathrin* Danitol 2.4EC 24 hrs 1 pyrethroid I
fenbutatin oxide* Vendex 50WP 2 days 7 days organotin IV
formetanate hydrochloride Carzol 92SP 10–16 days 4 0 5 formamidine III
fosetyl-al Aliette 80WDG 12 hrs 30 days miscellaneous N
hydrated lime# various 12 hrs when dry miscellaneous IV
imidacloprid (soil application) Admire 2F 12 hrs 0 neonicotinoid I 6
imidacloprid (foliar application) Provado 1.6F 12 hrs 0 neonicotinoid I
iron phosphate Sluggo 0 hrs 0 mineral IV
malathion 8 Spray 1 day 7 days organophosphate II
mefenoxam Ridomil Gold 2 days 0 acylalanine N
metaldehyde various 12 hrs 0 miscellaneous IV
methidathion* Supracide 25WP 30 days 7 14 or 60 days 8 organophosphate I
methomyl* Lannate LV 3 days 1 day carbamate III
micronized sulfur Thiolux 80% 1 day 0 miscellaneous IV
naled Dibrom 8E 2–3 days 9 7 days organophosphate I
oil# 415, 440 4 hrs when dry 10 spray oil III
propargite Omite CR and 30W 42 days 28 days sulfite IV
pyrethrin/piperonyl butoxide Pyrenone Crop Spray, Py-rin 60-6 12 hrs when dry botanical III
pyrethrin/rotenone Pyrellin E.C. 12 hrs 0 botanical III
pyriproxyfen Esteem 0.86EC 12 hrs 1 day insect growth regulator IV
Esteem Ant Bait 12 hrs 1 day Insect growth regulator IV
pyridaben Nexter 12 hrs 7 days pyridazinone III
sabadilla Veratran D 0.2% 24 hrs when dry botanical IV
spinosad Success 2SC, Entrust 80WP# 4 hrs 1 day macrocyclic lactone III 11
wettable sulfur# various 1 day 0 miscellaneous IV
           
* Permit required from county agricultural commissioner for purchase or use.
# Acceptable for use on organically grown produce.
1 Restricted entry interval (REI) is the number of days from treatment until the field can be safely entered without protective clothing. Preharvest interval (PHI) is the number of days from treatment to harvest. In some cases the REI in California exceeds the PHI. Because of these variations in intervals, a column labeled "Minimum days before harvest" is used in the Treatment Tables of this Guideline and lists the longer of the two intervals.
2 Ratings are as follows: I = Do not apply to blooming plants; II = Apply only during late evening; III = Apply only during late evening, night, or early morning; and IV = Apply at any time with reasonable safety to bees. N = no information. For more information, see How to Reduce Bee Poisoning From Pesticides (PDF* 164K), Pacific Northwest Extension Publication PNW518.
3 Preharvest interval is 21 days for up to 7 pt/acre or 35 days for over 7 pt/acre and 28 days for ant control.
4 10 days for weeding and propping; 16 days for harvesting, thinning, topping, and pruning.
5 If fruit is remaining on tree, preharvest interval is 30 days.
6 Do not apply during bloom because bees may be drawn to irrigation water.
7 Restricted entry interval is 40 days for low-volume sprays as authorized under a Special Local Needs permit.
8 Preharvest interval is 14 days when applied without oil and 60 days when applied with oil.
9 2 days for 1 pt or less; 3 days for more than 1 pt.
10 Special hazards are associated with oil treatments on green lemons; check label for preharvest interval.
11 Safe to bees 2 hrs after application has dried.
*You need Adobe Acrobat Reader version 4 or later to view or print this PDF. If this software is not installed on your computer, you can download a free copy of Acrobat Reader.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Citrus
UC ANR Publication 3441

Acknowledgments: This table was compiled based on research data and experience of University of California scientists working on a variety of crops.

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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