GMO's, NTO's, Bt and IPM: Making Sense of Genetically modified crops

Corn and Sorghum

Corn and Sorghum Agronomy

Corn and Sorghum Pests

Corn and Sorghum Publications

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.
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.
Feb 2015

Insect Management on Desert Produce: Corn earworm / Tobacco budworm

Publication (PDF, 271KB)

Authors: John C. Palumbo

A serious pests to heads of lettuce, the Corn Earworm can cause serious damage. This article describes their development, Economic Damage, and suggestions for their management.
Feb 2015

Insect Management on Desert Produce: Corn earworm / Tobacco budworm 2015

Publication (PDF, 271KB)

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.
Aug 2014

Methods of Measuring for Irrigation Scheduling - When

Publication (PDF, 1.3MB)

Authors: Martin, Edward C.

Proper irrigation management requires that growers assess their irrigation needs by taking measurements of various physical parameters. Some use sophisticated equipment while others use tried and true common sense approaches. Whichever method used, each has merits and limitations. In developing any irrigation management strategy, two questions are common: “When do I irrigate?” and “How much do I apply?” This bulletin deals with the WHEN.
Feb 2014

Diagnosing Nutrient Deficiencies Quick-Reference

Publication (PDF, 429KB)

Authors: Shawna Loper

Nutrient deficiencies can be identified in field through visual observations. However, additional analysis, either plant or soil testing is often necessary to confirm nutrient stress. The following is a quick-reference flow chart that can be used in field to identify potential nutrient deficiencies. Each nutrient has unique deficiency symptoms. Deficiencies will appear in many ways. It can be confused with other plant problems like pathogens or spray damage. But nutrient deficiencies can often be recognized because they tend to form symmetrical patterns, where both sides of leaf or plant parts show the same pattern.
Sep 2013

Forage Sorghum Harvest

Publication (PDF, 155KB)

Authors: Ayman Mostafa and Mike Ottman

Forage sorghums are warm-season, annual grasses that have the potential to produce large amounts of nutritious forage during summer months, especially in lower-elevation deserts, like central Arizona. If managed properly , sorghum can be used as supplemental feed during times of inadequate forage production or can be used as an emergency , late-planted crop to replace a primary crop that has been damaged by wind, hail or drought early in the growing season.
Jul 2013

Measuring Water Applications

Publication (PDF, 144KB)

Authors: Ayman Mostafa

One of the challenges in using surface irrigation systems is determining the effective amount of water applied to a field. To get a good estimate, you must first calculate the gross amount of water applied and then, taking into system efficiencies, determine the amount of effective water applied (what the plants actually receive).
Dec 2011

Measuring Water Flow in Surface Irrigation Ditches and Gated Pipe

Publication (PDF, 1.28MB)

Authors: Edward C. Martin

Measuring water in surface irrigation systems is critical for peak efficiency management. Irrigation management decisions should be made based on the amount of water applied and how this relates to the consumptive use demands of the plants and the soil water holding capacity.
Dec 2011

Determining the Amount of Irrigation Water Applied to a Field

Publication (PDF, 535KB)

Authors: Edward C. Martin

Critical to any irrigation management approach is an accurate estimate of the amount of water applied to a field. Estimating the amount of water applied to a field or to a set is fairly easy for surface systems.
Jun 2009

Growing Grain Sorghum in Arizona

Publication (PDF, 398KB)

Grain sorghum (milo) is a warm season, annual grain crop. It is more resistant to salt, drought, and heat stress than most other crops. Nevertheless, highest yields are obtained when stresses are minimized. This Article give some suggestion on planting, fertilizing, irrigation and other aspects of growing.
May 1991

Nitrogen Management Guide for Field Corn

Publication (PDF, 378KB)

Authors: Thomas A. Doerge, Robert L. Roth, Bryant R. Gardner

The level of nitrogen fertility has more influence on the growth and yield of Field Corn than any other single plant nutrient because it is the nutrient most often deficient in Arizona soils.
May 1991

Nitrogen Management Guide for Grain Sorghum

Publication (PDF, 320KB)

Authors: Thomas A. Doerge, Robert L. Roth, Bryant R. Gardner

The level of nitrogen fertility has more influence on the growth and yield of Grain Sorghum than any other single plant nutrient because it is the nutrient most often deficient in Arizona soils.
May 1991

Nitrogen Management Guide for Sweet Corn

Publication (PDF, 615KB)

Authors: Thomas A. Doerge, Robert L. Roth, Bryant R. Gardner

The level of nitrogen fertility has more influence on the growth and yield of sweet corn than any other single plant nutrient because it is the nutrient most often deficient in Arizona soils.

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Corn and Sorghum Presentations

Oct 2013

GMO's, NTO's, Bt and IPM: Making Sense of Genetically modified crops

Presentation (PDF, 2.98MB)

Authors: Peter Ellsworth

Location Presented: Arizona Highlands Garden Conference 2013, Miami AZ

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