Cross Commodity

Cross Commodity Publications

Jun 2022

NCC Response To Sulfoxaflor

Publication (PDF, 1MB)

Authors: Peter C. Ellsworth and Alfred J. Fournier

Arizona Pest Management Center response to National Cotton Council query on the use of Sulfoxaflor in Arizona cotton.
Oct 2020

Symptom Identification and Management of Cotton Seedling Diseases

Publication (PDF, 1.2MB)

Authors: Jiahuai Hu, Randy Norton

Seedling diseases, also known as damping-off (seedling death), are caused by several common soil-inhabiting fungi acting alone or collectively during pre-emergence and postemergence of cotton seedlings. Seedling diseases are common but often a minor problem in cotton production areas of Arizona in most years. However, significant stand loss to seedling diseases can occur sporadically in some fields without good crop rotation history.
Sep 2020

Fusarium Wilt of Cotton

Publication (PDF, 1.8M)

Authors: Jiahuai Hu, Randy Norton

Fusarium wilt is a destructive vascular wilt and root rot of many plant species, including all species of domesticated cotton.
Sep 2020

Goss’s Bacterial Wilt and Leaf Blight of Corn

Publication

Authors: Jiahuai Hu

Goss’s bacterial wilt and leaf blight (Goss’s wilt) was first recorded in Nebraska in the late 1960s and is now distributed widely in most states throughout the Corn Belt. The disease was first detected on field corn in southeastern Arizona in 2018.
Sep 2020

Alternaria Leaf Spot of Cotton

Publication

Authors: Jiahuai Hu and Randy Norton

Alternaria leaf spot of cotton is also known as Alternaria leaf blight. The disease was first identified in cotton in the US in 1918 and is now distributed worldwide. Alternaria leaf spot has been considered a minor disease in the cotton growing areas of Arizona.
May 2019

Spray Legally: Summary of Enlist™, Engenia® and Xtendimax® Application Use Requirements on Cotton

Publication (PDF, 304KB )

Authors: William B. McCloskey, Naomi M. Pier

Enlist™ One and Enlist Duo are water-based formulations of 2,4-D that can only be sprayed on cotton varieties with Enlist traits. XtendiMax® with VaporGrip® Technology and Engenia® Herbicide are water-based formulations of dicamba that can only be sprayed on cotton varieties with XtendFlex traits. The EPA labels for these 2,4-D and dicamba products include many requirements designed to reduce off-target movement and help limit damage to downwind crops and other susceptible plants. These are summarized in this table comparing 2,4-D and dicamba herbicide products. Check labels and websites for current requirements before spraying.
Mar 2019

Corn Earworm Management on Desert Produce - 2019

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

Crop Protection & Pest Management Program Saves Lives, Dollars and the Environment in Arizona

Publication (PDF, 2.5MB)

Authors: Arizona Pest Management Center (APMC)

This piece highlights impacts of University of Arizona Extension IPM programs, funded by USDA National Institute of Food and Agriculture (NIFA).
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.
Feb 2017

Cotton Variety Testing Results - 2016

Publication (PDF, 4.36MB)

Authors: Randy Norton, Ayman Mostafa

Variety selection is one of the most important decisions a grower will make contributing to the success of a cotton crop. It is critical, that a grower have as much information as possible in order to make an informed decision regarding variety selection.
Feb 2016

Insect Management on Desert Produce Crops: Western Flower Thrips 2016

Publication (PDF, 357KB)

Authors: John C. Palumbo

Western flower thrips are major pests to lettuces, cabbage, and spinach because of the damage they cause to these plants. This article describes their development, Economic Damage, and suggestions for their management.
Aug 2015

Insect Management on Desert Vegetables and Melons: Whiteflies 2015

Publication (PDF, 592KB)

Authors: John C. Palumbo

This article describes the sweetpotato whitefly (SWF) in great depth and their relation to Desert Vegetables and 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.
Jun 2015

Estimating the Vegetative/Reproductive Balance in Cotton Growth

Publication (PDF, 300KB)

Authors: J. C. Silvertooth

A healthy, well-developed cotton plant that is capable of high yield requires a strong root system, mainstem structure, sufficient leaves, and numerous fruiting branches to support a good boll load. Too small a vegetative structure on the plant results in reduced yield potential, and too much vegetative development, which is usually done at the expense of fruit set and yield.
Jun 2015

Early Season Crop Management

Publication (PDF, 319KB)

Authors: J. C. Silvertooth

The approaches and techniques used to produce a cotton crop in Arizona can vary to some degree from county to county, or from farm to farm. However, one of the objectives that has become increasingly common across Arizona is that of achieving earliness with a crop.
Jun 2015

Soil Management and Soil Testing for Irrigated Cotton Production

Publication (PDF, 436KB)

Authors: J. C. Silvertooth

Whenever studying cotton, it is a natural tendency to focus on the above ground portions of the plant. However, an equally important part of the plant is the root system, The soil is a focal point of any farming operation.
Jun 2015

General Maturity Groups for Cotton Varieties

Publication (PDF, 289KB)

Authors: Silvertooth, Jeffrey C.

Three maturity groupings are often used to classify cotton varieties, consisting of: 1) short season or more determinate plants, 2) medium season varieties, and 3) long or full season varieties which are more indeterminate in nature. Classification of cotton varieties into one of these three categories is not necessarily straightforward in all cases. In fact, it easily can become a process of “splitting hairs” when making maturity grouping designations for cotton varieties. Nevertheless, maturity designations are commonly assigned to most commercially available varieties, which can effect selection and management.
Jun 2015

Determining the Mainstem Node Number for Cotton

Publication (PDF, 329KB)

Authors: J. C. Silvertooth and Paul W. Brown

To systematically monitor a young crop effectively, it is important to understand the fundamentals about counting and identifying nodes on the plant.
Jun 2015

Physiology of Cotton Defoliation

Publication (PDF, 529KB)

Authors: Felix Ayala and J. C. Silvertooth

This bulletin deals with the physiology of cotton defoliation and attempts to describe what conditions must exist inside the plant in order for defoliation to occur. It is important to understand the basic physiological processes involved in order for best crop management practices to accomplish a successful defoliation.
Jun 2015

Early Cotton Development

Publication (PDF, 281KB)

Authors: J. C. Silvertooth

After stand establishment, the next critical stage in the development of a cotton crop is the initiation of the first squares, or floral buds, which could develop into the plants’ first boll. This is an important step for a cotton crop and one which is usually followed closely by the attentive farmer.
Jun 2015

Water Management for Defoliation

Publication (PDF, 316KB)

Authors: Silvertooth, Jeffrey C.

There are several factors which are important to consider in managing defoliation. Factors such as plant-water relations, Nitrogen (N) fertility status, the extent of honeydew deposits on the leaves from insects such as the sweet potato whitefly or aphids, and weather conditions following the defoliant application are all important in terms of the final defoliation results.

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