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  1. Agricultural IPM
  2. Field Crops
  3. Outputs
  4. Publications
Field Crop Publications
Field Crop Publications
  • Sep 2019
    Nondormant Alfalfa Varieties for Arizona 2019
    Publication (PDF, 435KB)
    Authors: Mike Ottman
    Alfalfa varieties differ in fall dormancy, defined asgrowth during the fall. Nondormant alfalfa varieties are usually planted in mild winter areas for their ability to grow in the fall. Nondormant, very nondormant, and extremely nondormant alfalfa varieties (fall dormancy class 8, 9, and 10) are adapted to elevations below 4000 feet in Arizona.
  • Dec 2018
    Promoting the Use of Predators
    Publication (PDF, 5.7MB)
    Authors: Peter C. Ellsworth, Naomi Pier, Alfred J. Fournier, Steven E. Naranjo, Timothy Vandervoet
    New research has identified critical levels of predators that impact economic spray decisions for whiteflies. By working with the beneficials found naturally within a field, reliance on chemical controls could effectively be reduced.
  • 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.
  • 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.
  • Nov 2015
    Cowpea Aphid in Alfalfa
    Publication (PDF, 248KB)
    Authors: John Palumbo and Barry Tickes
    Recent outbreaks of cowpea aphid in alfalfa are more than a local phenomena. Large populations of cowpea aphids have been reported throughout Arizona. The reason behind these outbreaks are unknown. This article hopes to bring some insight by discussing the cowpea aphid, the damage it causes, and suggestions on controlling it.
  • Oct 2015
    Wheat and Barley Varieties for Arizona 2015
    Publication (PDF, 657KB)
    Authors: Dr. Michael J. Ottman
    Contains a list of some of the different varieties of Wheat and Barley. There is also a chart detailing some of the yield information relating to each of the varieties.
  • Sep 2015
    Nondormant Alfalfa Varieties for Arizona 2015
    Publication (PDF, 437KB)
    Authors: Mike Ottman
    This article contains a chart of non dormant alfalfa varieties for Arizona. Suggestions for determining an appropriate fall dormancy class, identifying potential pest problems, yield, and salt tolerance are all discussed.
  • 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.
  • Jun 2015
    Soil Fertility and Soil Testing Guideline for Arizona Cotton
    Publication (PDF, 293KB)
    Authors: J. C. Silvertooth
    According to all available evidence, there are 20 total nutrients necessary for complete plant growth and development. Not all are required for all plants, but all have been found to be essential to some.
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ARIZONA PEST MANAGEMENT CENTER
University of Arizona
College of Agriculture and Life Sciences
Maricopa Agricultural Center

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Maricopa, AZ 85239
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