Thursday, October 1, 2015

Wheat Product Test Reveals Little Help for Yields

John H. Grove and William P. Bruening
Plant and Soil Sciences Department, University of Kentucky
The following is a progress report to the Kentucky Small Grains Growers Association.

The primary goal of this research is to provide new product information to wheat producers. New product releases, which occur every year, are often accompanied by weak performance evaluation information – often testimonials based on invalid comparisons. Chemical soil compaction treatments, liquid carbon and foliar nutrition products are already in the marketplace, and a new group of ‘biological/microbiological’ products is now emerging. Are any of these new materials going to be the “next big thing” in wheat production? The objective was to evaluate nine products intended to raise Kentucky wheat yield. Six products were specified by the Kentucky Small Grain Growers Association.

Wednesday, September 23, 2015

New Corn Disease Found in Bordering States

Carl A. Bradley, University of Kentucky Extension Plant Pathologist
Originally posted in KPN

Tar spot of corn, a foliar disease caused by the fungus Phyllachora maydis, recently was found in the United States for the first time. The disease was confirmed in Indiana and Illinois. Pictures of the disease and more information about the locations where its presence was confirmed are available online in the Pest & Crop Newsletter (Purdue Cooperative Extension Service) and the Bulletin (University of Illinois Extension).

It is important to document if this disease is present in Kentucky. If symptoms similar to those shown in the articles referenced above are found in Kentucky, samples should be submitted to one of the University of Kentucky Plant Disease Diagnostic Laboratories (located in Princeton and Lexington) via a county Extension agent.

Thursday, September 17, 2015

Winter Decline Syndrome of Canola (PPFS-AG-R-01)

Carl Bradley, Extension Plant Pathologist, University of Kentucky

Interest in producing canola in Kentucky has greatly increased in recent years. During the last canola “boom” in Kentucky during the late 1980s, a serious concern was the rapid decline of stands during late winter and early spring. Referred to as winter decline syndrome, the problem was so severe in some fields that near complete crop failure occurred. At present, it is unknown if newer canola cultivars — with reported improved winter hardiness and survival — will be less subject to winter decline syndrome or not. This publication is intended to help canola producers become familiar with winter decline syndrome, its symptoms, its possible cause, and management options. 

Winter Decline Syndrome of Canola (PPFS-AG-R-01) is available online. For additional publications on crop diseases, visit the UK Plant Pathology Extension Publications webpage

Seeing Orange in Your Corn?

Carl A. Bradley, Extension Plant Pathologist,University of Kentucky
(Originally published in KPN)

Figure 1. Orange pustules for the southern
rust pathogen covering a corn leaf
(photo: Carl Bradley, UK)
The pathogen of southern rust of corn (Puccinia polysora) has infected a lot of corn fields in Kentucky within the last month. Orange pustules (Figure 1) covering affected leaves are common, and can make your shirt turn orange when walking through a field (which might be good for any Tennessee Volunteer or Illinois Fighting Illini college football fans, but a little disconcerting for corn farmers).

Wednesday, September 16, 2015

Fall 2015 Wheat Planting Decision

Greg Halich, Extension Economist, University of Kentucky

Kentucky grain farmers have just started harvesting corn and are getting to the point where they will decide how much wheat they will plant this fall. In Kentucky, wheat is almost always planted in the fall following the harvest on corn ground, and then double-cropped with soybeans in early summer after the wheat harvest. This allows for two harvested crops in one calendar year. However, soybeans planted after the wheat harvest are more susceptible to summer drought, which means on average yields are lower for these double-cropped soybeans. In Kentucky, this yield reduction typically averages around 20%. As a consequence, the majority of soybeans planted in Kentucky are full-season plantings rather then double-cropped.

Thursday, September 10, 2015

Dry Weather Likely Shaved Soybean Bushels

Chad Lee, Extension Professor and Agronomist, University of Kentucky

Seed fill may have been hurt by the hot, dry weather.

The wet weather early combined with cooler temperatures set us up for what should be an excellent corn crop. The drier weather recently likely hurt soybean yields. July 2015 was the wettest July on record for Kentucky with almost 9 inches of rain: link. July temperatures were essentially average.
The last week of August and first week of September had warmer weather (14 days with average temperatures of 78 to 80 F) and inadequate rainfall to keep up with the temperatures and crop demand link.

Friday, September 4, 2015

Who will be the first to document 100 bu/A soybeans in KY?

Carrie KnottExtension Agronomist-Princeton, University of Kentucky

Beginning this year there are two new awards for the Kentucky Soybean Production Contest: Kentucky 100-Bushel Club and Kentucky Double-Crop 80-Bushel Club.