Publications

Agricultural Publications

Oct 2018

Corn Earworm Management on Desert Produce - October 2018

Publication (PDF, 273KB)

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.
Oct 2018

Diamondback Moth Management in Desert Cole Crops, Spring 2019

Publication (PDF, 572KB)

Authors: John C. Palumbo

List of Guidelines prepared in response to the diamondback moth (DBM) outbreaks that occurred in 2016-17 in Arizona. Following these guidelines can help keep the moths from spreading. There is also a list of insecticides and their respective efficacy against DBM.
Sep 2018

Bagrada Bug Management Tips - 2018

Publication (PDF, 372KB)

Authors: John C. Palumbo

Contains information on how to manage the Bagrada bug. Includes: where they tend to hide, how to scout them out, what their feeding signs look like, and tips regarding chemical control.
Sep 2018

Guidelines for Diamondback Moth Management in Desert Cole Crops -2018

Publication (PDF, 460KB)

Authors: John C. Palumbo

List of Guidelines prepared in response to the diamondback moth (DBM) outbreaks that occurred in 2016-17 in Arizona. Following these guidelines can help keep the moths from spreading. There is also a list of insecticides and their respective efficacy against DBM.
Sep 2018

Vegetable Planting Calendar for Maricopa County

Publication (PDF, 634KB)

Authors: Kai Umeda

In the low desert regions of the southwest, including Maricopa County, most any type of vegetables and fruits can be grown successfully when appropriate varieties are selected and planted at the right time. The climate, the season, and potential pests all impact the selection of what to plant when.
Aug 2018

2018 Guidelines for Whitefly / CYSDV Management on Fall Melons

Publication (PDF, 614KB)

Authors: John C. Palumbo

The sweetpotato whitefly, Bemisia tabaci can transmit many types of plant viruses. Since 2006, this pest has been responsible for vectoring cucurbit yellow stunting disorder virus (CYSDV) in fall melons throughout the growing regions of Arizona and southern California.
Aug 2018

Diamondback Moth on Desert Cole Crops in 2017

Publication (PDF, 410KB)

Authors: John C. Palumbo

In 2016 there was a outbreak of Diamondback Moths. This article covers a bit of the history of that outbreak and how the were handled in the subsequent year. The event was partially documented by some surveys found in this article.
Aug 2018

Insect Management on Desert Produce and Melons: Pests at Stand Establishment 2018

Publication (PDF, 592KB)

Authors: John C. Palumbo

There are many insects that can be found on Desert Produce and Melons. This Article covers the description, damage, and Management/Control of the following insects: Flea Beetles, Darkling Beetles, Field crickets, Saltmarsh Caterpillar, Ground Beetles, and Rove Beetles.
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.
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

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

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

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.
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.
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.

ARIZONA PEST MANAGEMENT CENTER