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By John Sawyer, Department of Agronomy
Last week (June 19) I provided some observations on corn growth and response to nitrogen (N) applied in an anhydrous ammonia study being conducted at the ISU research farm between Ames and Boone. Following are some observations one week later (June 26, 2008).
By Charles Hurburgh, Department of Agricultural and Biosystems Engineering and Dan Loy, Department of Animal Science
Floodwaters have soaked many grain bins on farms and at commercial elevators. With only a few exceptions, flood soaked grain is not useable for feed or food. Flooding affects both the stored grain and the storage structures.
Grain and Grain Products
By Mahdi Al-Kaisi, Department of Agronomy and Mark Hanna, Department of Agricultural and BioSystems Engineering
By John Sawyer, Department of Agronomy
Yellow Corn
As many are well aware, the wet conditions this spring have resulted in tremendous corn coloration and growth variation across fields. In my travels to the ISU research farms west of Ames this week for research work, it is clear that corn is recovering and beginning rapid growth, but that growth is very uneven and varies on a quite small scale.
By Tom Glanville, Department of Agricultural and Biosystems Engineering
As the floodwater recede, we are getting lots of questions from rural residents wanting to know if their wells are safe to use. Here are three of the most common questions.
There was no flood water on my property, but the nearby fields and road were flooded. How do I know if my well should be tested.
Despite the cancellation of the Iowa State University Weed Science field day originally scheduled for June 26, there is still an opportunity to review the weed management demonstrations and research at the ISU Curtiss Farm on South State Street in Ames.
Since planting and herbicide applications are still underway, particularly for soybeans, it is suggested that a good opportunity to see the weed science research exists after the first week in July.
By Elwynn Taylor, Department of Agronomy
It only takes a glance at the year’s (water year begins in October) precipitation map to identify the region of ABNORMAL wetness. The record setting floods of 2008 are no surprise in light of the records. If it seems that high water years in the Midwest are increasingly common since about 1970; they are.
By Stephen K. Barnhart, Department of Agronomy and Mark Hanna, Department of Agricultural and Biosystems Engineering
Rain, wind, hail, and unavoidable harvest delays have led to lodged and flat hayfields across the state. This is not usually a concern in more normal seasons, but if it occurs, producers have to manage for and around it.
A ‘bright side’ of delayed harvest is that the forage plants have longer to accumulate carbohydrate ‘stores’ and maintain plant vigor.
By Robert Burns, Department of Ag and Biosystem Engineering
During excessively high rainfall periods Iowa producers with open manure storages should closely monitor manure levels to prevent these structures from over-topping.
This year the corn growth is behind, and with the wet soils some fields will be sampled later than normal. Late sampling may complicate test interpretation.
