Search

Watch Alfalfa for Blister Beetles

July 14, 2023 11:51 AM
Blog Post

Blister beetles are an occasional late-summer problem in Iowa alfalfa fields. The beetles feed on alfalfa and soybean foliage, but leaf loss is not of economic importance. The bigger concern with blister beetles is their toxicity to livestock when accidentally consumed in feed. The beetles produce cantharidin, an irritant that causes painful blistering when the insects are handled. The cantharidin remains in the beetle’s body even after it dies and can cause health issues in livestock when dead blister beetles are consumed with hay.

Alternative Forage Options: Tips for Seeding Warm Season Annuals

May 31, 2023 4:16 PM
Blog Post

With turning the calendar to June, now is the time to be seeding warm-season annual forages like sorghum, sorghum-sudangrass, sudangrass, millets, and teff. These forages can help to fill in the gap with the summer slump or provide some extra forage when your perennial forage supply may be short. Below are some helpful reminders on establishing and utilizing warm season annual forages.

Category: 

Check Alfalfa Stands for Winter Injury

April 11, 2022
Healthy white tissue in the crown and taproot of an alfalfa plant with lots of new, symmetrical shoots.

As forage stands start to green up this spring, take time to evaluate the stands for any winter injury. It will be especially important to check stands that had significant armyworm damage last fall.

As you evaluate forage stands, Tables 1 and 2 below can be used to help determine what type of action may be warranted in a field. Note that while older stands typically have fewer plants per square foot, they produce more stems per plant. As a general rule of thumb, plan for 100% of normal season yield if there are 55 stems per square foot, regardless of the stand age.

Category: 

Forage Opportunities in Storm Damaged Fields

July 27, 2020 11:22 AM
Blog Post

One option to consider in fields with severe storm damage with no or limited yield potential is annual forages. This option may especially be of interest to livestock producers who could utilize the forage or may be short on forage or feed as a result of the storm damage. The following recommendations are meant to serve as a starting point for those considering an annual forage in storm damaged fields.

Category: 

Regional Crop Update: June 29- July 7, 2020

July 7, 2020 9:49 PM
Blog Post

Limited rainfall and the warmer temperatures causing crop stress, herbicide injury in soybeans, soybean gall midge, and Japanese beetles were some of the common issues or concerns that ISU Extension field agronomists saw in fields across the state this last week. Read on to see what’s happening in specific regions across the state.

Northwest Iowa

Category: 

Spring Forage Fertilization Considerations

April 1, 2020

Fertilization is just as important for forages as it is for row crops to maximize productivity. This article addresses spring fertilization considerations for forage crops and pastures.

Nitrogen considerations

Nitrogen (N) applications can either be a one-time, annual application or can be split applied. Suggested N application rates for single application are in Table 1 and rates for split applications are in Table 2.

Table 1. Suggested N application rates for a single annual application

Category: 

Grazing Cover Crop Considerations

October 30, 2019 8:30 AM
Blog Post

With a growing number of cover crop acres across the state of Iowa, some producers are looking to cover crops to help extend their grazing season. While cover crops have the potential to be an extra forage source and reduce feed costs, there are challenges with using cover crops as a forage source. This ICM Blog shares some best management practices complied from a survey of producers who have prior experiences with grazing cover crops along with what we’ve learned in our grazing cover crop studies to help you get the most out of grazing cover crops.

Category: 

Pages