Psyllid Control Treatment

LIST OF MATERIALS AVAILABLE FOR ASIAN CITRUS PSYLLID CONTROL IN VARIOUS ECOLOGICAL SETTINGS IN TEXAS

M. Sétamou¹ and R. T. Villanueva²
¹Texas A&M University Kingsville-Citrus Center
312 N International Blvd. Weslaco, and
²Texas AgriLife xtension,
2401 E. Highway 83, Weslaco, Texas 78596

Nurseries
Conventional
Organic
Dooryard

Available insecticides for psyllid control in nurseries (production and retail nurseries)

Systemic Materials*
1. Soil Treatment
Insecticide	Active Ingredient	Efficacy	Rate/Acre	REI (hours)	Maximum rate/yr
Admire Pro, Merit, Alias, Coretect, Bayer Advanced	Imidacloprid	++	7-14 oz	12	14.0 oz /Acre (0.5 lb AI)
Flagship	Thiamethoxam	++	8-11 oz	12	11 oz/acre
Venom	Dinotefuran	++	5-6 oz	12
Discuss	Cyfluthrin + Imidacloprid	++	3.4 to 5.6 fl. oz. per 1000 sq. ft.	12
2. Foliar Treatment
Provado1, Merit, Marathon II	Imidacloprid	++	10-20 oz	12	0.5 lbs / a.i. per acre
Flagship	Thiamethoxam	++	4-5.5	12	11 oz/acre
Venom, Safari 20G	Dinotefuran	++	5-6 oz	12
Orthene T	Acephate	+	½ to 3/4 lb	24
Discuss	Cyfluthrin + Imidacloprid	++	3.4 to 5.6 fl. oz. per 1000 sq. ft.	12
Contact Materials (All Foliar Treatment)*
Insecticide	Active Ingredient	Efficacy	Rate/Acre	REI (hours)	Maximum rate/yr
Lorsban, Chlorpyrifos Pro, Yuma	Chlorpyrifos	++	5 pts	120	7.5 lb AI / Acre
Danitol, Tame	Fenpropathrin	++	16-21 oz	24
Sevin SL Sevin XLR Plus Carbaryl	Carbaryl	++	1.5 qts	12
Movento	Spirotetramat	++	8-10 oz	24	20 oz / season
Micromite	Micromite	++	6.25 oz	12	18.75 oz/year
Supracide 2E	Methidathion	+	6-20 oz	48
Tempo, Baythroid	Cyfluthrin	++	2-4 oz	120
Imidan	Phosmet	++	1-2 lb	24		Max 2 applic./yr
Petroleum Oils	Oil	+	1-2.5%	ASTD*	4
Citri-King, Prevam	Cold pressed oil	+	2-4 qts	ASTD*
Neemix Aza-Direct	Neem Oil	+	0.75-6 oz	12	0
Surround	kaolin	+	5-10 lb	4	0

¹Do not apply in enclosed structures such as greenhouses and planthouses

ASTD: As soon to dry
Make sure that you read the product labels and specially the restrictions that apply to your conditions.

Proposed chemical treatment program for Conventional Commercial Citrus Orchards for Asian Citrus Psyllid control**

In commercial groves, effective psyllid control starts with a dormant spray when psyllids are overwintering as adults. We recommend two dormant sprays, the first done at the beginning of the overwintering period (mid October-November) and a second one in winter at the end of that period before the first spring flush of the year (January – mid February). At least one dormant spray must be made to ensure that many adults are killed before the first spring flush of the year.
Additional sprays are required during the year and the best time is just before each major flush in the grove. Traditionally, four major flush cycles are observed in Texas, but it is important to note that several grove care practices such as hedging/pruning/topping, irrigation and fertilization can stimulate flush production. In addition, a flush cycle will likely follow a major rainfall. With these influential factors in mind, it will be important for growers to get ready for psyllid control at all times. Several chemicals insecticides can be used for psyllid control.

Systemic Materials*
1. Soil Treatment
Insecticide	Active Ingredient	Efficacy	Rate/Acre	REI (hours)	PHI (days)	Maximum rate/yr
Admire Pro	Imidacloprid	++	7-14 oz	12	0	14.0 oz /Acre (0.5 lb AI)
Platinum	Thiamethoxam	++	8-11 oz	12	0	11 oz/acre
Temik	Aldicarb	+	33 lb	48	30 d for lemon*
2. Foliar Treatment
Provado	Imidacloprid	++	10-20 oz	12	0
Admire 2 F		++	7-14 oz	12	0
Actara	Thiamethoxam	++	8-11 oz	12	0
Orthene T	Acephate	+	2/3 lb	24	12 m
Contact Materials (All Foliar Treatment)*
Insecticide	Active Ingredient	Efficacy	Rate/Acre	REI (hours)	PHI (days)	Maximum rate/yr
Agri-Mek Abba Zoro, Epimectin, Agmectin	Abamectin	+	10-20 oz	12	7	40 oz/season
Danitol, Tame	Fenpropathrin	++	16-21 oz	24	24
Sevin SL Sevin XLR Plus Carbaryl	Carbaryl	++	1.5 qts	12	5
Dimethoate 4E	Dimethoate	++	0.5 to 1 pint /100 gal water	240	15-45
Mustang	Zeta-cypermetrhin	++	4.3 oz	12	1	17.2 oz
Movento	Spirotetramat	++	8-10 oz	24	1	20 oz/season
Supracide 2E	Methidathion	+	6-20	48	14-60
Baythroid XL	Cyfluthrin	++	2-4 oz
Imidan	Phosmet	++	1-2 lb	24 h	7	4 lb or 2 applicat./yr
Vydate L	Oxamyl	+	0.625-2.5 pts*	ASTD	7
Portal	Fenpyroximate	+
Carzol SP	Formetanate hydrochloride	+	5-10 oz	24 h	7	1.25 lb/season
Micromite 80 WGS	Diflubenzuron	++	6.25 oz	12 h	21	18.25 oz or 3 applicat./yr
Delegate	Spinetoram	++	3-6 oz	4 h	1	12 oz or 3 applicat./yr
Malathion	Malathion	++	1.25-2 pt	12
Ambush, Warrior	Pyrethroid	+
Petroleum Spray Oils	Oil	+	1-2.5%	ASTD	4
Citrus Oils (Citri-King)		+	2-3 qts	ASTD
Neemix, Aza-Direct)	Neem Oil	+	0.75-6 oz	12 h	0
Surround	kaolin	+	5-10 lb	4 h	0
Copper Sulfates	Copper		1-3 lb

** Four treatment periods are recommended in citrus orchards for effective psyllid control:

1. Pre-bloom as dormant spray (end of January to mid-February) to target overwintering adults. For this treatment use a contact pesticide such as Danitol, or Danitol in combination with a growth regulator such as Micromite

2. Post-bloom spray during the flushing period in late April to May. Use either Agri-Mek which as a translaminar effect or a foliar spray with a systemic material such as Provado or Actara. Alternatively, growers may use a soil application of a systemic product such as Temik or Admire Pro. Note that Admire Pro will provide effective control for trees young trees and trees not bigger than 8 ft tall. For Temik, make sure to make foliar spray within 30 days of Temik application.

3. Foliar spray of systemic and/or contact insecticides in late July to August

4. Foliar spray of a contact insecticide such as Carbaryl or Chlorpyrifos in October.

**For Organic Orchards, the following materials can provide some help*.**

Contact Materials (All Foliar Treatment)
Insecticide	Active Ingredient	Efficacy	Rate/Acre	REI (hours)	PHI (days)	Maximum rate/yr
Pyganic® Crop Protection EC 5.0 II Pyganic® Crop Protection EC 1.4 II Safer® Brand Yard & Garden Insect Killer Concentrate II (with soap) Safer® Brand Yard & Garden Insect Killer II (with soap)	Pyrethrum	+	4.5-18 oz	12	0
Petroleum Spray Oils Vegetable oils (soybean oil, cottonseed oil)	Oils	+
Citrus oils, Oroboost,	alcohol ethoxylate	+
Neem oils (Neemix, Aza-Direct)	azadirachtin	+		12	0
Surround	Kaolin	+ (Repellent)
Lime Sulfur	Sulfur**	+
Copper Salts	Copper	+
Garlic Extract, Garlic GP	allicin	+

*Approved organic pesticides are relatively less effective and must be applied at high levels (e.g. copper salts, sulfur) or must be applied frequently (e.g. pyrethrin).

++ Do not apply sulfur and oil simultaneously. It is necessary to wait at least two weeks after applying sulfur spray before using spray oils.

Materials available for pest control in Dooryard trees with effectiveness on psyllids.

1. Soil Systemic Materials*
Insecticide	Active Ingredient	Efficacy	Rate/Acre	Comments
Bayer Advanced 3 in 1 Bayer Advanced Trees and Shrubs ABN Bayer Advanced Season Long	Imidacloprid	++	Read label
Green Light Tree and Shrub Insect Control with Safari 2G	Dinotefuran	++	Read label
2. Foliar Materials
Insecticide	Active Ingredient	Efficacy	Rate/Acre	Maximum rate/yr
Pyganic® Crop Protection EC 5.0 II Pyganic® Crop Protection EC 1.4 II Safer® Brand Yard & Garden Insect Killer Concentrate II (with soap) Safer® Brand Yard & Garden Insect Killer II (with soap) Spectracide	Pyrethrin	+	Read label
Ortho Basic Solution	Permethrin	+	Read label
Malathion 57EC Ortho Malathion Plus	Malathion	++
Ortho Sytemic Insect Killer Orthene T	Acephate	+	Read label
Ambush, Warrior	Pyrethroid	+	Read label
Ultra Fine Oil Citrus Oils (Citri-King, PreVam, Oroboots) Neem Oil (e.g. Neemix, Aza-Direct)	Oil	+	Read label
Sevin 80S	Carbaryl	++	Read label
Surround	Kaolin Clay	+	Read label
Safer Insecticidal Soaps	Soap	+ (Repellent)	Read label
Copper Sulfates	Copper	+	Read label

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