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Aug 2018

Pests and Pesticide Control

Publication (PDF, 13.97MB)

Authors: College of Agriculture, The University of Arizona

This manual reviews basic information on pests, pesticides, and safety. It is important to realize that pesticide application should be only a part of an overall integrated pest management (IPM) plan. Hopefully, this information will help you become a safe and conscientious certified applicator.
Jul 2018

Interactions Between Insects & Weeds in Desert Crops - July 2018

Publication (PDF, 356KB)

Authors: John C. Palumbo

There is a positive correlation between weeds and insects. This article describes the relationship between weed management and insects. It details how weeds can be a refuge for beneficial insects and how they can also act as a reservoir for insect pests. The impact that weeds have on insecticide application is also discussed.
Jul 2018

2017 Guidelines for Whitefly / CYSDV Management on Fall Melons

Publication (PDF, 656KB)

Authors: John C. Palumbo

CYSDV has caused significant reductions in fruit yields in the past, mainly due to the whitefly. This article gives some management guidelines for the whitefly including cultural management and chemical management.
Jul 2018

Something’s biting me, but I can’t see it!

Publication (PDF, 715KB)

Authors: Shaku Nair, Dawn H. Gouge, and Shujuan Li

Biting midges also known as "no-see-ums" are small insects that are difficult to see and bite humans. This article discusses their appearance, biting concerns, their life cycle, and how to manage biting midges.
Jun 2018

Cultural Practices for Whitefly Management in Desert Melons

Publication (PDF, 87KB)

Authors: John C. Palumbo

This article outlines some ways to manage the Whitefly (SWF) population. Even though there are naturally occurring factors that lie outside the realm of control, there is still many things one can do to help reduce the population and risk of the Whitefly.
Jun 2018

Insecticide Usage on Desert Lettuce, 2017-18

Publication (PDF, 328KB)

Authors: John C. Palumbo

A total of 25 surveys were completed of insecticide usage on desert lettuce, representing an estimated total of 44,180 fall acres and 37,720 spring lettuce acres from Yuma and neighboring Imperial County. This article concludes that the reduced risk insecticides will continue to play an increasing role in management of pests in desert lettuce.
Jun 2018

Pecan Bacterial Leaf Scorch

Publication (PDF, 1.21MB)

Authors: Jiahuai Hu

Pecan bacterial leaf scorch (PBLS) is an important and chronic disease that affects pecan in Arizona, as well as other pecan production regions of the United States. This article discusses the disease.
Jun 2018

Phymatotrichopsis Root Rot in Pecan

Publication (PDF, 2.22MB)

Authors: Jiahuai Hu

Phymatotrichopsis root rot (abbreviated as PRR) is commonly referred to as Cotton root rot, Phymatotrichum root rot, Texas root rot, or Ozonium root rot. This pathogen is prevalent in all of major pecan production areas in Arizona.
Jun 2018

Vegetable Diseases Caused by Phytophthora capsici in Arizona

Publication (PDF, 2.27MB)

Authors: Jiahuai Hu

Phytophthora capsici is responsible for some of the most important diseases of peppers and cucurbits worldwide. The diseases are commonly referred to as Phytophthora blight, Phytophthora crown and root rot, Phytophthora fruit rot, and damping of.
Jun 2018

Managing Scorpions

Publication (PDF, 677KB)

Authors: Dawn H. Gouge, Shujuan (Lucy) Li, Christopher Bibbs, and Shaku Nair

This article discusses the three most prevalent scorpions found in Arizona and describes each of them. Tips are given on how to live with and manage scorpions.
May 2018

Impact of Bagrada Bug on Desert Cole Crops: An Eight Year Summary

Publication (PDF, 327KB)

Authors: John C. Palumbo

The bagrada bug became a major pest of cole crops since 2010. This report consists of information gathered through surveys over eight years and shows what some of the trends are regarding the bagrada bug over that time period.
May 2018

Interactions Between Insects & Weeds in Desert Crops - May 2018

Publication (PDF, 354KB)

Authors: John C. Palumbo

There is a positive correlation between weeds and insects. This article describes the relationship between weed management and insects. It details how weeds can be a refuge for beneficial insects and how they can also act as a reservoir for insect pests. The impact that weeds have on insecticide application is also discussed.
May 2018

Spider Mites in Melons 2018

Publication (PDF, 173KB)

Authors: John C. Palumbo

Twospotted spider mites, are widespread on melon crops throughout the southwestern U.S. This report describes their appearance, the type of damage they usually cause, and methods of management.
May 2018

Cotton Stem Blight and Boll Rot

Publication (PDF, 779KB)

Authors: Jiahuai Hu

Cotton stem blight and boll rot is caused by the necrotrophic fungus Sclerotinia sclerotiorum. This pathogen can attack hundreds of plant species including many important agricultural crops such as vegetables, legumes, sunflowers, canola, many flowering bedding plants, and stone fruits.
May 2018

School Preparation Guidance for Summer Management Teams

Publication (PDF, 587KB)

Authors: Janet Hurley, and Dawn H. Gouge

Featuring Summer Preparation Guidance for Summer Management Teams. Includes suggestions for: Teachers, Custodians, Food service personnel, IPM Professionals, Facility managers, Landscape and groundskeepers and everyone else.
May 2018

Scorpions of the Desert Southwest United States

Publication (PDF, 2.16MB)

Authors: Dawn H. Gouge, Shujuan (Lucy) Li, Christopher Bibbs, and Shaku Nair

Scorpions are predatory arachnids related to spiders, mites, and ticks. They are some of the oldest known terrestrial arthropods (animals with an external skeleton, a segmented body, and paired jointed limbs). Scorpions have an elongated body and a segmented tail that ends in a stinger that can deliver a venomous sting.
Apr 2018

Insect Management on Desert Melons: Whiteflies 2018

Publication (PDF, 830KB)

Authors: John C. Palumbo

This article descibes the sweetpotato whitefly (SWF) in great depth and their relation to Desert Melons. It includes it's history of development and damages it has caused. The article also describes the management of SWF, including sampling/monitoring, natural/biological control, cultural practices, and insecticidal control.
Mar 2018

Adoption of proactive resistance management practices to control Bemisia tabaci in Arizona and California

Publication (PDF, 385KB)

Authors: Naomi Pier, Al Fournier, John Palumbo, Yves Carrière, Wayne Dixon, Lydia Brown, Steven J. Castle and Nilima Prabhaker, Peter C. Ellsworth

The goal of this project was to prepare pest managers to proactively manage whitefly resistance at the landscape level by providing them with Basic education on the 1st principles of resistance management and Insecticide use Maps.
Mar 2018

Corn Earworm Management on Desert Produce - March 2018

Publication (PDF, 272KB)

Authors: John C. Palumbo

This article describes the Corn Earworm and where it can be found. It covers it's physical description, economic damage, insecticidal control, and methods for identifying this insect.
Mar 2018

Thrips Management in Desert Leafy Vegetables - 2018

Publication (PDF, 152KB)

A chart detailing various insecticides and the efficacy against Thrips on Desert Leafy vegetables. Each insecticide is rated at Good, Fair, and Poor, and is shown for both the Adult and Larvae stage. There is also a brief note for each of the insecticides.

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