Browning, H. W.

Cartwright, B.

English

Texas A&amp;M Repository

L-2325 Texas Agricultural Extension Service Texas Citrus Insecticide and Miticide Guide H.W. Browning and B. Cartwright* Basis of Pesticide Selection Using a pesticide wisely requires forethought and analysis of a particular pest problem or situation to determine the best choice under those particular conditions. Often, more than one choice exists for a particular pest. Factors that should be considered in selecting one pesticide over another include: • Product efficacy or effectiveness; • Application frequency needed or amount of residual control provided; • Cost per acre, factoring in the number of applications required to achieve control; • Potential hazards to applicator, mixer and grove workers; signal words on the product label are a good indication of this hazard; • Hazard to beneficials and other non-target organisms and • Use restriction, including re-entry intervals, preharvest intervals, number of allowable ap-plications, time required between applications and restriction on mixing with other products, particularly oils. Use of the information contained in the guide. This publication is designed to provide, to the best extent possible, a listing of the insecticides and miticides available for use against selected citrus crop pests. It is written for comparison and educational purposes only and is not intended to provide complete information for applications of a product. The product label attached to the container always must be consulted before use. *Former entomologist, Texas Agricultural Experiment Station, and former Extension entomologist, The Texas A&M University System. The pesticide listing for control of citrus pests was compiled from the most recent product labels available at the time this guide was prepared. No guarantee of effectiveness is intended by listing a particular product for use against a particular pest; only that the pest is listed on the label for the product. For selected pests, where a sufficient research base exists, an efficacy rating (ER) is provided to give a performance index of various products for controlling a particular pest. Ratings are based on field tests conducted in Texas and other citrus growing areas. Local conditions and pest pressure may cause actual performance to vary. Effects of pH on Spray Solutions Water sources used for pesticide applications in the Lower Rio Grande Valley are alkaline with pH readings typically ranging from 7.8 to 8.2. Use of high pH water, particularly above 8.0, may affect the performance of many pesticides, particularly organophosphates and carbamates. Degradation of certain pesticides is more rapid at higher pH, especially at higher temperatures (>95° F). Little information is available on the degradation rate of specific pesticides in high pH water; some pest-icides are relatively unaffected. Generally, it is a good idea to check pH levels with a pH meter on a regular basis and buffer spray water with suitable acid buffer down to a range of 6-7 pH. When tank mixes of more than one pesticide or when fertilizer is combined with a pesticide; the final spray solution should be checked to determine pH. Texas Agricultural Extension Service • Zerle L. Carpenter, Director • The Texas A&M University System • College Station, Texas ~----------------~~~~~--~----------------------------------------Use of Spray Adjuvants Adjuvants or spray additives are intended to enhance product performance or coverage. Sur-factants or spreading agents lower the spray particle surface tension allowing droplets to spread out on plant surfaces instead of combining to form large droplets subject to run-off. They are especially useful when spraying hard-to-wet surfaces such as waxy citrus leaves, armored scale insects, mite colonies with webbing or hairy-surfaced weeds. Some pesticide products are formulated with surfactant included. Stickers and extenders function to lengthen pesticide performance life by increasing product tenacity or weathering qualities of materials sprayed on plant surfaces. These frequently are combined with surfactants and are available as "spreader-stickers." Other adjuvants available for special applications include anti-foam agents and suspending agents that improve performance and enhance application of pesticide suspensions. In general, adjuvants properly used increase product performance, reduce waste and help minimize non-target contamination. Pesticide Safety The key to using pesticides safely is to be aware of potential hazards and take adequate precautions before and during use to prevent any unwanted effects. Before using any pesticide, read the label. Besides application instructions, the label provides information on re-entry intervals, hazards to the environment and non-target organisms, a state-ment of practical treatment or first-aid in case of exposure, storage and disposal procedures for containers, pre-harvest intervals to avoid excessive residues and the symptoms of poisoning. Users also should consult Texas Pesticide Laws and Re[!,ulations for state provisions that affect the application of pesticides to citrus. Protecting Bees from Pesticides With the exception of some tangerines and tangelos, most citrus cultivars do not require honeybee pollination. However, blooming citrus is highly attractive to honeybees as a food source and may provide a good nectar source for a high quality honey sought by beekeepers. Although insecticides are not routinely applied during bloom, it is important to recognize that many pesticides applied to citrus are toxic to honeybees. The insecticides may cause significant bee death while they are foraging in sprayed orchards or through contamination of water or pollen brought back to the hive. The grower and beekeeper should cooperate closely to minimize bee losses. The following guidelines will reduce bee losses: • If at all possible, avoid spraying during bloom. If applications are needed, apply when the fewest bees are foraging. Applications in the evening are least hazardous, early morning sprays are second best and mid-day sprays are the worst relative to bee hazards. • To prevent heavy losses of bees, don't allow pesticides to drift onto colonies. Bees often cluster on the front of their hives on hot evenings. Pesticide drift or direct spray at this time generally results in high levels of mortality. • Where insecticides are needed, consider their toxicity. "Highly toxic" pesticides present an extreme hazard to bees and should be used during bloom only if no other alternative exists . Insecticides categorized as "Moderately toxic" or "Relatively non-toxic" pose a much reduced hazard to bees and may be applied with relative safety in the evening or morning hours. For specific hazard ratings of pesticides to honeybees, refer to the pesticide recommendation table. Precautions for Certain Miticides and Insecticides Many pesticides have special precautions listed on the label that should be considered prior to their use. Failure to completely follow label guidelines may result in excessive residues at harvest, plant injury, poor pest control or undue hazards to non-target organisms including the applicator. The following are some of the major precautions for some of the most commonly used citrus pesticides: Petroleum oil sprays. When applied properly, oils provide a very useful tool for controlling some citrus pests without damage to beneficial organisms but the sprays require careful use to avoid plant injury. Soil moisture, humidity, temperatures, growth stage of leaves and fruit and the type of oil used can influence whether or not tree injury occurs. Spray oils should not be applied when soil moisture is low or when relative humidity is below 30 percent and daytime temperatures are likely to exceed 95° F. Effective use of oils for pest control requires that the oil persist on the tree long enough to kill the pest but not long enough to cause tree injury. Persistence of oil film on foliage beyond the tree's tolerance can interfere with photo-synthesis and transpiration. Such damage can --------® Table 1. Effectiveness of selected pesticides against major citrus pests. Formulated Days to Re-entry Honey- Toxicity to --- Mites --- Brown rate/ harvest interval Signal bee benficials4 Citrus Texas Citrus Armored soft Mealy-Pesticide acre (PHI) (days)3 word 1 hazard2 Mites Insects rust citrus red scales scale bugs Acaraben 4E 4-6 pt ASTD w HT 3 1 1 N N N Carzol 92 SP 5-10 oz 7 1 D MT H 3 0 N + + N Comite 6.5 2-3 pt 7 ASTD D ANT L 2 3 N N N Dicofol 4 EC 3-8 pt 7 ASTD c ANT H L 3 3 3 N N N Ethion 4E 4-6 pt 0** 1 D HT 3 0 2 1 1 N Guthion 2L 2.5-3.75 pt 28** 7-SL D HT H 1 2 N 3 3 2 Lorsban 4E 2-7 pt 21** 1 w HT 2 0 0 2 3 0 Morestan 25 WP 5 lb 21 ASTD c ANT M L 2 3 3 N N N Oil 2.5-3.75 gal ASTD c ANT M M 0 0 3 3 0 0 Sevin SOS 2.5-3 lb* 5 ASTD w HT L H N + N + 3 0 Sulfur 6E 1-11 pt* ASTD c ANT H L 2 0 N + N N Supracide 2E 2.5-5 pt* 14** 30 D HT H H N N + 3 3 Temik 15 G 33-67 lb See label D HT 3 3 1 N 0 0 Vendex L 10-20 oz* 7 ASTD D ANT L L 3 3 3 N N N Vydate L .625-2.5 pts* 7 ASTD D HT 3 N N N N N *Amount per acre derived by multiplying amount per 100 gal x 2.5; 250 gallons per acre is the assumed volume. **PHI depends on rate, method of application, the number of applications or particular citrus crop; consult label. 1Signal words: D = danger (most hazardous), W = warning, C = caution (least hazardous). 2Honeybee hazard: HT= highly toxic, MT= moderately toxic, ANT= relatively non-toxic. 3Re-entry intervals: ASTD = allow spray to dry. 4 Hazard to beneficials: H = highly toxic, M = moderately toxic, L = low level or nontoxic to beneficials, - = no information available. Key to efficacy ratings: Rating Control Expected 1 = Suppression ( <60% control) 2 = Moderate control (60-80%) 3 = Good to excellent control (80-100%) O = Not labeled for this pest but provides some control when used for labeled pests N = Not labeled = Unknown effect + = May stimulate this pest result in twig dieback, leaf drop, reduced yield and the reduction in amount of fruit sugars (soluble solids). Tangerines and tangelos tend to be more sensitive to oil damage than grapefruit and oranges. Late summer or fall applications of oil sprays may delay maturity, which will interfere with proper coloring of early harvested fruit and may cause increased cold susceptibility. Persistence of oils on leaf surfaces increases with higher oil dosages or through the use of oil with higher distillation temperatures such as a narrow range 440-type oil. When choosing the type or rate of oi ls , keep in mind that oil dissipates more quickly under higher tem-peratures. In situations where damage is likely from a regular oil spray because of hot, dry conditions, oil can be added at a low percentage to certain insecticide sprays to improve coverage. Before combining oil with any pesticide, read the label carefully to make sure the risk of phytotoxicity is not excessive. Do not combine oil sprays with sulfur or follow an application of sulfur within at least 30 days or plant injury may occur. When combining pesticides with oil, use of emulsifiable concentrates or other liquid formulations is preferred over wettable or soluble powders. Comite. Complete coverage is essential. Leaf distortion and/or fruit spotting may occur when used in the spring or it may occur if Cornice is tank mixed with oil or applied within 2 weeks of an oil application. Do not use in a spray solution above pH 10 or mix with alkaline materials (such as lime) . Ethion. Do not apply within 90 days of a previous application. Guthion. With one application per season, a 7-day preharvest interval should be observed; if two applications are required, PHI = 28 days. Lorsban 4E. Do not apply when temperatures exceed 95° F. Do not apply when trees are stressed by drought or high temperature. Lorsban 4E should not be used in combination with Difolatan ~-------------------------------------------------------------------------80. For orchard floor application, do not tank mix with Roundup or Paraquat herbicides. Morestan. One application per season. Sulfur. Do not make sulfur applications during hot weather. Applications are restricted to Novem-ber through May. Do not apply within 30 days of an oil application. Supracide. Make no more than two applications per growing season, with at least 45 days between applications. Do not apply within 14 days of harvest. If applied with oil, the preharvest interval is 60 days. Vendex. Do not apply more than four times in 12 months or within 7 days of harvest. Policy Statement for Making Pest Management Suggestions The information and suggestions included in this publication reflect the opinions of Extension entomologists and pathologists based on field tests or use experience. The management sug-Table 2. Additional products labeled for use on citrus. Product2 Labeled use Cygon 400 Mealybugs, mites Cythion 57% Scales Diazinon AG500 Aphids, soft scale Dibrom BE Aphids, mites, brown soft scale Dipel 2X Orangedog lmidan 50WP Scales (oranges only) Lannate L Beet armyworm Lorsban 15 G Ants Metasystox-R Aphids, Texas citrus mite Parathion 4E Scales, mealybugs Thiodan 3E Aphids Zolone 3EC Orangedog, whiteflies gestions are a product of research and are believed to be reliable. However, it is impossible to eliminate all risks. Conditions or circumstances that are unforeseen or unexpected may result in less than satisfactory results even when these suggestions are used. The Texas Agricultural Extension Service will not assume responsibility for such risks. Such responsibility shall be assumed by the user of this publication. Suggested pesticides must be registered and labeled for use by the Environmental Protection Agency and the Texas Department of Agriculture. The status of pesticide label clearances is subject to change and may have changed since this publication was printed. County Extension agents and appro-priate specialists are advised of changes as they occur. The user is always responsible for the effects of pesticide residues on his livestock and crops, as well as problems that could arise from drift or movement of the pesticide from his property to that of others. Always read and follow carefully the instructions on the container label. Rate Signal Days to per acre1 word harvest 4-8 pt w 4 1-1 .5 pt w 7 0.5-1 pt w 21 2.5 pt* D 7 0.3-0.6 lb c 0 2.5 lb* D 7 2-4 pt D 1 6.7 c 28 2.5-3.75 pt* c 7 1.6 pt* D 14 1.5-3.5 qt w Non bearing 4-8 pt w 14 1* =Amount per acre derived by multiplying amount per 100 gallons x 2.5; 250 gallons per acre is the assumed volume. 2Phytotoxicity may occur on young leaves and fruit; see label for precautions. The information herein is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Cooperative Extension Service is implied. Educational programs conducted by the Texas Agricultural Extension Service serve people of all ages regardless of socioeconomic level, race, color, sex, religion, handicap or national origin. Issued in furtherance of Cooperative Extension Work in Agriculture and Home Economics, Acts of Congress of May 8, 1914, as amended, and June 30, 1914, in cooperation with the United States Department of Agriculture. Zerle L. Carpenter, Director, Texas Agricultural Extension Service, The Texas A&M University System. 1.5M- 10-88, New ENT, HORT 

Texas Citrus Insecticide and Miticide Guide.

Texas A&M University

L-2325 
Texas Agricultural Extension Service 
Texas Citrus 
Insecticide and Miticide Guide 
H.W. Browning and B. Cartwright* 
Basis of Pesticide Selection 
Using a pesticide wisely requires forethought 
and analysis of a particular pest problem or 
situation to determine the best choice under those 
particular conditions. Often, more than one choice 
exists for a particular pest. Factors that should be 
considered in selecting one pesticide over another 
include: 
• Product efficacy or effectiveness; 
• Application frequency needed or amount of 
residual control provided; 
• Cost per acre, factoring in the number of 
applications required to achieve control; 
• Potential hazards to applicator, mixer and grove 
workers; signal words on the product label are a 
good indication of this hazard; 
• Hazard to beneficials and other non-target 
organisms and 
• Use restriction, including re-entry intervals, 
preharvest intervals, number of allowable ap-
plications, time required between applications 
and restriction on mixing with other products, 
particularly oils. 
Use of the information contained in the guide. 
This publication is designed to provide, to the best 
extent possible, a listing of the insecticides and 
miticides available for use against selected citrus 
crop pests. It is written for comparison and 
educational purposes only and is not intended to 
provide complete information for applications of 
a product. The product label attached to the 
container always must be consulted before use. 
*Former entomologist, Texas Agricultural Experiment Station, and 
former Extension entomologist, The Texas A&M University 
System. 
The pesticide listing for control of citrus pests was 
compiled from the most recent product labels 
available at the time this guide was prepared. No 
guarantee of effectiveness is intended by listing a 
particular product for use against a particular pest; 
only that the pest is listed on the label for the 
product. For selected pests, where a sufficient 
research base exists, an efficacy rating (ER) is 
provided to give a performance index of various 
products for controlling a particular pest. Ratings 
are based on field tests conducted in Texas and 
other citrus growing areas. Local conditions and 
pest pressure may cause actual performance to 
vary. 
Effects of pH on Spray Solutions 
Water sources used for pesticide applications in 
the Lower Rio Grande Valley are alkaline with pH 
readings typically ranging from 7.8 to 8.2. Use of 
high pH water, particularly above 8.0, may affect 
the performance of many pesticides, particularly 
organophosphates and carbamates. Degradation 
of certain pesticides is more rapid at higher pH, 
especially at higher temperatures (>95° F). Little 
information is available on the degradation rate of 
specific pesticides in high pH water; some pest-
icides are relatively unaffected. Generally, it is a 
good idea to check pH levels with a pH meter on a 
regular basis and buffer spray water with suitable 
acid buffer down to a range of 6-7 pH. When tank 
mixes of more than one pesticide or when fertilizer 
is combined with a pesticide; the final spray 
solution should be checked to determine pH. 
Texas Agricultural Extension Service • Zerle L. Carpenter, Director • The Texas A&M University System • College Station, Texas 
~----------------~~~~~--~----------------------------------------
Use of Spray Adjuvants 
Adjuvants or spray additives are intended to 
enhance product performance or coverage. Sur-
factants or spreading agents lower the spray 
particle surface tension allowing droplets to spread 
out on plant surfaces instead of combining to form 
large droplets subject to run-off. They are especially 
useful when spraying hard-to-wet surfaces such as 
waxy citrus leaves, armored scale insects, mite 
colonies with webbing or hairy-surfaced weeds. 
Some pesticide products are formulated with 
surfactant included. 
Stickers and extenders function to lengthen 
pesticide performance life by increasing product 
tenacity or weathering qualities of materials 
sprayed on plant surfaces. These frequently are 
combined with surfactants and are available as 
"spreader-stickers." Other adjuvants available for 
special applications include anti-foam agents and 
suspending agents that improve performance and 
enhance application of pesticide suspensions. In 
general, adjuvants properly used increase product 
performance, reduce waste and help minimize 
non-target contamination. 
Pesticide Safety 
The key to using pesticides safely is to be aware 
of potential hazards and take adequate precautions 
before and during use to prevent any unwanted 
effects. Before using any pesticide, read the label. 
Besides application instructions, the label provides 
information on re-entry intervals, hazards to the 
environment and non-target organisms, a state-
ment of practical treatment or first-aid in case of 
exposure, storage and disposal procedures for 
containers, pre-harvest intervals to avoid excessive 
residues and the symptoms of poisoning. Users 
also should consult Texas Pesticide Laws and 
Re[!,ulations for state provisions that affect the 
application of pesticides to citrus. 
Protecting Bees from Pesticides 
With the exception of some tangerines and 
tangelos, most citrus cultivars do not require 
honeybee pollination. However, blooming citrus is 
highly attractive to honeybees as a food source and 
may provide a good nectar source for a high 
quality honey sought by beekeepers. Although 
insecticides are not routinely applied during bloom, 
it is important to recognize that many pesticides 
applied to citrus are toxic to honeybees. The 
insecticides may cause significant bee death while 
they are foraging in sprayed orchards or through 
contamination of water or pollen brought back to 
the hive. The grower and beekeeper should 
cooperate closely to minimize bee losses. The 
following guidelines will reduce bee losses: 
• If at all possible, avoid spraying during bloom. 
If applications are needed, apply when the 
fewest bees are foraging. Applications in the 
evening are least hazardous, early morning 
sprays are second best and mid-day sprays are 
the worst relative to bee hazards. 
• To prevent heavy losses of bees, don't allow 
pesticides to drift onto colonies. Bees often 
cluster on the front of their hives on hot 
evenings. Pesticide drift or direct spray at this 
time generally results in high levels of mortality. 
• Where insecticides are needed, consider their 
toxicity. "Highly toxic" pesticides present an 
extreme hazard to bees and should be used 
during bloom only if no other alternative exists . 
Insecticides categorized as "Moderately toxic" 
or "Relatively non-toxic" pose a much reduced 
hazard to bees and may be applied with relative 
safety in the evening or morning hours. For 
specific hazard ratings of pesticides to honeybees, 
refer to the pesticide recommendation table. 
Precautions for Certain Miticides 
and Insecticides 
Many pesticides have special precautions listed 
on the label that should be considered prior to 
their use. Failure to completely follow label 
guidelines may result in excessive residues at 
harvest, plant injury, poor pest control or undue 
hazards to non-target organisms including the 
applicator. The following are some of the major 
precautions for some of the most commonly 
used citrus pesticides: 
Petroleum oil sprays. When applied properly, 
oils provide a very useful tool for controlling 
some citrus pests without damage to beneficial 
organisms but the sprays require careful use to 
avoid plant injury. Soil moisture, humidity, 
temperatures, growth stage of leaves and fruit 
and the type of oil used can influence whether 
or not tree injury occurs. Spray oils should not 
be applied when soil moisture is low or when 
relative humidity is below 30 percent and 
daytime temperatures are likely to exceed 95° F. 
Effective use of oils for pest control requires 
that the oil persist on the tree long enough to 
kill the pest but not long enough to cause tree 
injury. Persistence of oil film on foliage beyond 
the tree's tolerance can interfere with photo-
synthesis and transpiration. Such damage can 
--------® 
Table 1. Effectiveness of selected pesticides against major citrus pests. 
Formulated Days to Re-entry Honey- Toxicity to --- Mites --- Brown 
rate/ harvest interval Signal bee benficials4 Citrus Texas Citrus Armored soft Mealy-
Pesticide acre (PHI) (days)3 word 1 hazard2 Mites Insects rust citrus red scales scale bugs 
Acaraben 4E 4-6 pt ASTD w HT 3 1 1 N N N 
Carzol 92 SP 5-10 oz 7 1 D MT H 3 0 N + + N 
Comite 6.5 2-3 pt 7 ASTD D ANT L 2 3 N N N 
Dicofol 4 EC 3-8 pt 7 ASTD c ANT H L 3 3 3 N N N 
Ethion 4E 4-6 pt 0** 1 D HT 3 0 2 1 1 N 
Guthion 2L 2.5-3.75 pt 28** 7-SL D HT H 1 2 N 3 3 2 
Lorsban 4E 2-7 pt 21** 1 w HT 2 0 0 2 3 0 
Morestan 25 WP 5 lb 21 ASTD c ANT M L 2 3 3 N N N 
Oil 2.5-3.75 gal ASTD c ANT M M 0 0 3 3 0 0 
Sevin SOS 2.5-3 lb* 5 ASTD w HT L H N + N + 3 0 
Sulfur 6E 1-11 pt* ASTD c ANT H L 2 0 N + N N 
Supracide 2E 2.5-5 pt* 14** 30 D HT H H N N + 3 3 
Temik 15 G 33-67 lb See label D HT 3 3 1 N 0 0 
Vendex L 10-20 oz* 7 ASTD D ANT L L 3 3 3 N N N 
Vydate L .625-2.5 pts* 7 ASTD D HT 3 N N N N N 
*Amount per acre derived by multiplying amount per 100 gal x 2.5; 250 gallons per acre is the assumed volume. 
**PHI depends on rate, method of application, the number of applications or particular citrus crop; consult label. 
1Signal words: D = danger (most hazardous), W = warning, C = caution (least hazardous). 
2Honeybee hazard: HT= highly toxic, MT= moderately toxic, ANT= relatively non-toxic. 
3Re-entry intervals: ASTD = allow spray to dry. 
4 Hazard to beneficials: H = highly toxic, M = moderately toxic, L = low level or nontoxic to beneficials, - = no information available. 
Key to efficacy ratings: 
Rating Control Expected 
1 = Suppression ( <60% control) 
2 = Moderate control (60-80%) 
3 = Good to excellent control (80-100%) 
O = Not labeled for this pest but provides some control when used for labeled pests 
N = Not labeled 
= Unknown effect 
+ = May stimulate this pest 
result in twig dieback, leaf drop, reduced yield 
and the reduction in amount of fruit sugars 
(soluble solids). 
Tangerines and tangelos tend to be more 
sensitive to oil damage than grapefruit and 
oranges. Late summer or fall applications of oil 
sprays may delay maturity, which will interfere 
with proper coloring of early harvested fruit 
and may cause increased cold susceptibility. 
Persistence of oils on leaf surfaces increases 
with higher oil dosages or through the use of oil 
with higher distillation temperatures such as a 
narrow range 440-type oil. When choosing the 
type or rate of oi ls , keep in mind that oil 
dissipates more quickly under higher tem-
peratures. 
In situations where damage is likely from a 
regular oil spray because of hot, dry conditions, 
oil can be added at a low percentage to certain 
insecticide sprays to improve coverage. Before 
combining oil with any pesticide, read the label 
carefully to make sure the risk of phytotoxicity 
is not excessive. Do not combine oil sprays 
with sulfur or follow an application of sulfur 
within at least 30 days or plant injury may 
occur. When combining pesticides with oil, use 
of emulsifiable concentrates or other liquid 
formulations is preferred over wettable or soluble 
powders. 
Comite. Complete coverage is essential. Leaf 
distortion and/or fruit spotting may occur when 
used in the spring or it may occur if Cornice is tank 
mixed with oil or applied within 2 weeks of an oil 
application. Do not use in a spray solution above 
pH 10 or mix with alkaline materials (such as 
lime) . 
Ethion. Do not apply within 90 days of a 
previous application. 
Guthion. With one application per season, a 
7-day preharvest interval should be observed; if 
two applications are required, PHI = 28 days. 
Lorsban 4E. Do not apply when temperatures 
exceed 95° F. Do not apply when trees are stressed 
by drought or high temperature. Lorsban 4E 
should not be used in combination with Difolatan 
~-------------------------------------------------------------------------
80. For orchard floor application, do not tank mix 
with Roundup or Paraquat herbicides. 
Morestan. One application per season. 
Sulfur. Do not make sulfur applications during 
hot weather. Applications are restricted to Novem-
ber through May. Do not apply within 30 days of 
an oil application. 
Supracide. Make no more than two applications 
per growing season, with at least 45 days between 
applications. Do not apply within 14 days of 
harvest. If applied with oil, the preharvest interval 
is 60 days. 
Vendex. Do not apply more than four times in 
12 months or within 7 days of harvest. 
Policy Statement for Making 
Pest Management Suggestions 
The information and suggestions included in 
this publication reflect the opinions of Extension 
entomologists and pathologists based on field 
tests or use experience. The management sug-
Table 2. Additional products labeled for use on citrus. 
Product2 Labeled use 
Cygon 400 Mealybugs, mites 
Cythion 57% Scales 
Diazinon AG500 Aphids, soft scale 
Dibrom BE Aphids, mites, 
brown soft scale 
Dipel 2X Orangedog 
lmidan 50WP Scales 
(oranges only) 
Lannate L Beet armyworm 
Lorsban 15 G Ants 
Metasystox-R Aphids, Texas citrus 
mite 
Parathion 4E Scales, mealybugs 
Thiodan 3E Aphids 
Zolone 3EC Orangedog, whiteflies 
gestions are a product of research and are believed 
to be reliable. However, it is impossible to eliminate 
all risks. Conditions or circumstances that are 
unforeseen or unexpected may result in less than 
satisfactory results even when these suggestions 
are used. The Texas Agricultural Extension Service 
will not assume responsibility for such risks. Such 
responsibility shall be assumed by the user of this 
publication. 
Suggested pesticides must be registered and 
labeled for use by the Environmental Protection 
Agency and the Texas Department of Agriculture. 
The status of pesticide label clearances is subject to 
change and may have changed since this publication 
was printed. County Extension agents and appro-
priate specialists are advised of changes as they 
occur. 
The user is always responsible for the effects of 
pesticide residues on his livestock and crops, as 
well as problems that could arise from drift or 
movement of the pesticide from his property to 
that of others. Always read and follow carefully 
the instructions on the container label. 
Rate Signal Days to 
per acre1 word harvest 
4-8 pt w 4 
1-1 .5 pt w 7 
0.5-1 pt w 21 
2.5 pt* D 7 
0.3-0.6 lb c 0 
2.5 lb* D 7 
2-4 pt D 1 
6.7 c 28 
2.5-3.75 pt* c 7 
1.6 pt* D 14 
1.5-3.5 qt w Non bearing 
4-8 pt w 14 
1* =Amount per acre derived by multiplying amount per 100 gallons x 2.5; 250 gallons per acre is the assumed volume. 
2Phytotoxicity may occur on young leaves and fruit; see label for precautions. 
The information herein is for educational purposes only. Reference to commercial products or trade names is made with 
the understanding that no discrimination is intended and no endorsement by the Cooperative Extension Service is implied. 
Educational programs conducted by the Texas Agricultural Extension Service serve people of all ages regardless of socioeconomic 
level, race, color, sex, religion, handicap or national origin. 
Issued in furtherance of Cooperative Extension Work in Agriculture and Home Economics, Acts of Congress of May 8, 1914, as 
amended, and June 30, 1914, in cooperation with the United States Department of Agriculture. Zerle L. Carpenter, Director, Texas 
Agricultural Extension Service, The Texas A&M University System. 
1.5M- 10-88, New ENT, HORT 


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Texas Citrus Insecticide and Miticide Guide.

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Texas Citrus Insecticide and Miticide Guide.

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