A Texas Citrus Pest Management Plan

Source

Title A Texas Citrus Pest Management Plan
PDF Document https://ipmdata.ipmcenters.org/documents/pmsps/TXcitrus.pdf
Source Type Pest Management Strategic Plans
Source Date 10/01/2003
Settings Citrus (major)
Region Southern
States Texas

Executive Summary

Key Pests



PDF

https://ipmdata.ipmcenters.org/documents/pmsps/TXcitrus.pdf

Settings/Crops

Priorities

Category Rank Pest Type Pest Crop Stage Priority
Extension/Outreach 1 All 6- to 12-Inch Shoot It is critical that knowledgeable individual(s) be available that can study, analyze and react to citrus pest management needs.
Extension/Outreach 1 Weeds 6- to 12-Inch Shoot Cultivation in citrus is an important weed management option.
Extension/Outreach 2 All 6- to 12-Inch Shoot There is a need for an organized system of crop managers that keeps pace with day to day field level crop pest dynamics.
Extension/Outreach 2 Weeds 6- to 12-Inch Shoot Chemical control of weeds in citrus is important and may be the only control option when water is being applied.
Extension/Outreach 3 All 6- to 12-Inch Shoot The use of remote sensing technology is helpful in detecting blackfly infestations.
Extension/Outreach 3 Weeds 6- to 12-Inch Shoot Keeping citrus weed free in the winter is important in helping to prevent free damage during marginal temperature periods.
Extension/Outreach 4 All 6- to 12-Inch Shoot It is critical that growers have a ready source of pest management information. On-line computer-based bulletin boards or world wide web sites can provide this. Some readily available printed material should also be available through county Extension offices.
Extension/Outreach 4 Weeds 6- to 12-Inch Shoot An on going citrus herbicide screening program is important.
Extension/Outreach 5 All 6- to 12-Inch Shoot It is important to make available an annual citrus production educational program that discusses the latest industry needs, trends and research developments.
Extension/Outreach 5 Weeds 6- to 12-Inch Shoot Weed control in young establishing orchards is essential.
Extension/Outreach 6 Weeds 6- to 12-Inch Shoot It is important to keep records of orchard weed management practices to provide information on species cycles and presence.
Extension/Outreach 7 Weeds 6- to 12-Inch Shoot The grower should remain in close contact with Extension educational programs to keep abreast of area pest problems, trends, regulatory needs and management opportunities.
Extension/Outreach 8 Weeds 6- to 12-Inch Shoot The availability of a quick acting, post emergence citrus herbicide is important to help control unexpected flushes of weeds.
Regulatory 1 All 6- to 12-Inch Shoot A system is needed that has the capability of responding to regulatory issues that could potentially impact citrus pest management implementation.
Regulatory 2 All 6- to 12-Inch Shoot Regulations and procedures are needed to prevent exotic pests from entering Texas citrus producing areas.
Regulatory 3 All 6- to 12-Inch Shoot Quarantines to help prevent root weevil movement into non-infested areas are important.
Regulatory 4 All 6- to 12-Inch Shoot A control for the pathogenic fungus, Mycosphaerella citri which causes the disease greasy spot is needed. A combination of affective materials is important because of potential resistance. Registration of Enable is important.
Regulatory 5 All 6- to 12-Inch Shoot An adequate control for “root weevils” is needed. There is a current Section (18) for bifenthrin (Capture 2EC).
Regulatory 6 All 6- to 12-Inch Shoot Registration for fipronil for leaf-cutter ants is needed. Regulatory officials are encouraged to move on this issue.
Regulatory 7 All 6- to 12-Inch Shoot An affective vine control method is needed for Texas citrus.
Regulatory 8 All 6- to 12-Inch Shoot Pipeline materials for citrus mite control include spirodiclofen (Envidor®) and milbemectin (Mesa™).
Regulatory 9 All 6- to 12-Inch Shoot A promising pipeline material for armored scales is the insect growth regulator (IGR) (pyriproxyfen).
Regulatory 10 All 6- to 12-Inch Shoot Pipeline material for leaf miners in citrus is the insect growth regulator (IGR) (pyriproxyfen) and a mite fat metabolism antagonist, spirodiclofen (Envidor®).
Research 1 All 6- to 12-Inch Shoot Microclimates exist in the Texas Lower Rio Grande Valley citrus producing region, generally with an east to west trend. More information is needed on this phenomena’s impact on pests and ultimately, pest management strategies.
Research 1 All 6- to 12-Inch Shoot Key to pest management success is field level day to day knowledge of pests’ status where grove monitoring or sampling provides the basic information for most pest management related decisions.
Research 1 Weeds 6- to 12-Inch Shoot Consideration should be given to the need for orchard floor vegetation cover during certain times of the year to afford habitats for certain parasites and predators of citrus insect pests.
Research 2 All 6- to 12-Inch Shoot The use of rootstock with acceptable disease tolerance and good horticultural characteristics is an important ‘first-step’ in the implementation of citrus pest management.
Research 2 All 6- to 12-Inch Shoot Many of the classical examples of biological control are found in US citrus. In Texas there are numerous pests that are held below damaging levels by naturally occurring and imported organisms. This is often a delicate balance and additional work is needed on the establishment and maintenance of biological control organisms in Texas citrus.
Research 2 Weeds 6- to 12-Inch Shoot The availability of a quick acting, post emergence citrus herbicide is important to help control unexpected flushes of weeds.
Research 3 All 6- to 12-Inch Shoot Orchard site selection is important because of influences on irrigation, ease of pesticide application and to minimize cold damage.
Research 3 All 6- to 12-Inch Shoot Research is needed on the impact of insecticide applications on non-target organisms with emphasis on recently discovered chemistries with novel and often selective modes of action.
Research 3 Weeds 6- to 12-Inch Shoot Investigate the potential for using commercially available coverings to keep row middles clean.
Research 4 All 6- to 12-Inch Shoot It is important to take steps to preserve beneficial organisms and monitor their status
Research 4 All 6- to 12-Inch Shoot Many new pesticide chemistries have been developed in the past decade. Work is needed to determine new pest management alternatives for problem organisms in Texas citrus.
Research 5 All 6- to 12-Inch Shoot Pest management strategies for aphids may become increasingly important.
Research 5 All 6- to 12-Inch Shoot When chemical applications are warranted, use products that are economical and efficacious that will have a minimal off-target impact.
Research 6 All 6- to 12-Inch Shoot Recognize that a pest management strategy may be crop specific but must contain strategies (sub strategies) for each organism (pest) negatively impacting the crop while continuously being respondent to the needs and demands of a modern society.
Research 7 All 6- to 12-Inch Shoot Funding is needed for nonchemical pest management research strategies, such as: biocontrol programs (predators, parasites, pathogens, and biocontrol materials), habitats of beneficials, mating disruption, and resistant varieties.
Research 8 All 6- to 12-Inch Shoot Critical to the Texas citrus industry is the availability of certified, virus-free budwood for citrus cultivars that are commercially important.
Research 9 All 6- to 12-Inch Shoot Improved sampling techniques are needed for early detection of melanose.
Research 10 All 6- to 12-Inch Shoot Improved methods for detecting CTV infected citrus, particularly at the field level.
Research 11 All 6- to 12-Inch Shoot More work is needed on citrus psorosis transmission.
Research 12 All 6- to 12-Inch Shoot Increase the number of certified viroid free budwood sources.
Research 13 All 6- to 12-Inch Shoot Investigate the potential for using commercially available coverings to keep citrus row middles clean.
Research 14 All 6- to 12-Inch Shoot Research is needed on quick acting post emergence herbicide to help control unexpected flushes of weeds in citrus groves.
Research 15 All 6- to 12-Inch Shoot Entomopathogenic nematodes could be an important root weevil biological control. Texas research in this area is needed.
Research 16 All 6- to 12-Inch Shoot The role fire ants play in root weevil mortality needs to be investigated.
Research 17 All 6- to 12-Inch Shoot Improved control of leaf cutter ants is needed.
Research 18 All 6- to 12-Inch Shoot Work is needed on the management of vines in citrus groves.
Research 19 All 6- to 12-Inch Shoot Sampling methods for citrus pests needs to be improved, especially for minor pests.
Research 20 All 6- to 12-Inch Shoot Research and demonstration work is needed on modern crop oils, their impact on citrus trees and role when used in conjunction with newer classes of pesticides.
Research 21 All 6- to 12-Inch Shoot Investigations are needed into citrus mites’ natural mortality factors to determine impact on population dynamics focusing on situations that occur during outbreaks and relationship(s) to damage. Extension (Education) Needs: • It is critical that knowledgeable individual(s) be available that can study, analyze and react to citrus pest management needs. • There is a need for an organized system of crop managers that keeps pace with day to day field level crop pest dynamics. • The use of remote sensing technology is helpful in detecting blackfly infestations. • It is critical that growers have a ready source of pest management information. On-line computer-based bulletin boards or world wide web sites can provide this. Some readily available printed material should also be available through county Extension offices. • It is important to make available an annual citrus production educational program that discusses the latest industry needs, trends and research developments.

Chemical Controls

Fungicide

Active Ingredient Description Brands CAS PC Pests REI (hrs) PHI (days) FRAC
azoxystrobin 131860-33- 128810
basic copper sulfate 8011-63-0 8101
copper complex 67989-88-2 235400
copper hydroxide 20427-59-2 23401
fenbuconazole 119611-00- 129011
fosetyl-al 39148-24-8 123301
metalaxyl 57837-19-1 113501
propiconazole 60207-90-1 122101
pyraclostrobin 175013-18- 99100
sulfur 7704-34-9 77501
trifloxystrobin 141517-21- 129112

Herbicide

Active Ingredient Description Brands CAS PC Pests REI (hrs) PHI (days) HRAC
alkylated aromatic petroleum oil 68919-17-5 54001
bromacil 314-40-9 12301
diuron 330-54-1 35505
eptc 759-94-4 41401
fluazifop-butyl 69806-50-4 122805
glyphosate 1071-83-6 417300
norflurazon 27314-13-2 105801
oryzalin 19044-88-3 104201
paraquat 4685-14-7 61603
sethoxydim 74051-80-2 121001
simazine 39312-80-6 80807

Insecticide

Active Ingredient Description Brands CAS PC Pests REI (hrs) PHI (days) IRAC
carbaryl 63-25-2 56801
chlorpyrifos 2921-88-2 59101
dicofol 115-32-2 10501
diflubenzuron 35367-38-5 108201
ethion 563-12-2 58401
fenbutatin-oxide 13556-08-6 104601
fenpropathrin 39515-41-8 127901
formetanate hydrochloride 23422-53-9 97301
imidacloprid 138261-41- 129099
methidathion 950-37-8 100301
oxamyl 23135-22-0 103801
propargite 2312-35-8 97601
pyridaben 96489-71-3 129105
pyriproxyfen 95737-68-1 129032

Nematicide

Active Ingredient Description Brands CAS PC Pests REI (hrs) PHI (days) RAC
abamectin 71751-41-2 122804
aldicarb 116-06-3 98301
fenamiphos 22224-92-6 100601

Timelines

Chemicals JanFebMarAprMayJunJulAugSepOctNovDec Comments
Azoxystrobin (Fungicide)
Basic copper sulfate (Fungicide)
Copper complex (Fungicide)
Copper hydroxide (Fungicide)
Fenbuconazole (Fungicide)
Fosetyl-Al (Fungicide)
Metalaxyl (Fungicide)
Propiconazole (Fungicide)
Pyraclostrobin (Fungicide)
Sulfur (Fungicide)
Trifloxystrobin (Fungicide)
Alkylated aromatic petroleum oil (Herbicide)
Bromacil (Herbicide)
Diuron (Herbicide)
EPTC (Herbicide)
Fluazifop-butyl (Herbicide)
Glyphosate (Herbicide)
Norflurazon (Herbicide)
Oryzalin (Herbicide)
Paraquat (Herbicide)
Sethoxydim (Herbicide)
Simazine (Herbicide)
Carbaryl (Insecticide)
Chlorpyrifos (Insecticide)
Dicofol (Insecticide)
Diflubenzuron (Insecticide)
Ethion (Insecticide)
Fenbutatin-oxide (Insecticide)
Fenpropathrin (Insecticide)
Formetanate hydrochloride (Insecticide)
Imidacloprid (Insecticide)
Methidathion (Insecticide)
Oxamyl (Insecticide)
Propargite (Insecticide)
Pyridaben (Insecticide)
Pyriproxyfen (Insecticide)
Abamectin (Nematicide)
Aldicarb (Nematicide)
Fenamiphos (Nematicide)