Corn Refuge - Crop Quest

Avoiding Arrested Ear Syndrome

Krissy Lampe — Fri, 21 Jun 2024 15:28:46 +0000

Arrested ear development can occur if certain adjuvants are applied to corn during the vulnerable V12-14 growth stages. Arrested Ear Development or Syndrome is a physiological condition caused when certain stresses are present in corn during specific growth stages. While these conditions are not always predictable, there is one controllable management practice to [...]

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Corn Borer & Late Season Pest in Corn

Tracy Smith — Sat, 01 Aug 2015 08:00:43 +0000

It is that time of year again when it becomes necessary to treat the late season lepidoptera species that can infest your corn crop. The most predominant pests this time of year are normally the two species of corn borer. These worms bore into the ear or the stalk of corn plants causing economic [...]

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Applying Insecticides to Corn Refuges

Tracy Smith — Mon, 15 Sep 2014 08:00:56 +0000

Bt (Bacillus thuringiensis) is a protein inserted into plant genes such as corn, that is toxic to certain insect pests. Bt corn is used by many farmers and is very beneficial to the management of insect pests. To avoid insect resistance to Bt genes there must be a nearby refuge. The refuge is a [...]

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Rootworm Control Can Be Complicated

Tracy Smith — Sun, 15 Jun 2014 08:00:19 +0000

The dynamics of managing rootworm larvae and adults has changed tremendously the past 10 to 15 years. Before the onset of Bt Corn Rootworm (CRW) genetics, before the practice of controlling adults (beetle bombing) for the purpose of controlling next year’s larva population, granular soil insecticides were the norm, and were very effective. These events [...]

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Making Sense of Corn Refuges

Tracy Smith — Tue, 01 Apr 2014 08:00:15 +0000

Managing and complying with corn refuges is always a challenge. Insect control traits built into the seed has proven to be a great integrated pest management tool for corn growers. The need for refuges is related to resistance management. In order for these traits to have a shelf life, we can’t afford to allow resistant [...]

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Corn Borer Control in a Bt World

Tracy Smith — Mon, 15 Jul 2013 08:00:06 +0000

Prior to the introduction of the Bt (Bacillus thuringiensis) gene in corn, it was common to treat the vast majority of corn acres in this country for European and/or Southwestern Corn Borer each summer. In many areas, there are two, possibly three flights of the corn borer moth each year. The second flight is usually [...]

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