all
In 2024, the effect of commercial fungicides on foliar diseases of corn were evaluated at six Iowa State University Research and Demonstrations Farms: the Northwest Research and Demonstration Farm (...
In 2024, commercial foliar fungicides were evaluated across seven Iowa State University research and demonstration farms to determine their effect on disease control and yield response on soybeans.
A common theme for most of us during the winter months is to make decisions for which pieces of equipment to upgrade and which to do maintenance on before heading into the next growing season.
When it comes to your planter, whether you are considering purchasing a new planter or making...
Key Points
- Drone technology is commercially available to provide growers with another option for selective post-emergence herbicide applications.
- Iowa State University completed a field demonstration of weed mapping and an executable prescription on a...
This fall, the Iowa State University Extension and Outreach Crops Team extended an open call for sponsorship to support our four most popular programs: Integrated Crop Management Conference, Crop Advantage Series, CropsTV, and Planter University. The Crops Team thanks and recognizes our Champion...
Iowa State University Extension and Outreach Field Agronomists have completed their fall survey of subsoil moisture in northwest Iowa. Subsoil moisture sampling in Iowa dates back to February 1954 when ten sites were chosen for soil moisture sampling. In 1959, the sampling increased to 22...
After harvest is completed and equipment is cleaned and winterized, there’s an activity that can be done in upcoming weeks that could pay large dividends relating to future soybean yields. That task is collecting soil samples to assess the situation with the soybean cyst nematode (SCN) in fields...
The crops are coming out and it’s ALMOST time for farmers to start making fall nitrogen applications. Remember that soil temperatures should be below 50°F at a depth of 4 inches and continuing to drop before making fall nitrogen applications —ideally, the cooler, the better. It's important for...
Iowa State University recently updated its list of soybean varieties with resistance to the soybean cyst nematode (SCN) for Iowa. The list includes 200 varieties with the less common Peking SCN resistance. These varieties can be especially effective in managing SCN producing and higher yields in...
In the past few weeks, I've received several questions from farmers about whether it’s too late or too warm to harvest alfalfa. The general rule of thumb is to allow 5 to 6 weeks (900 Growing Degree Days, or GDD) between the final harvest and a killing frost, or less than 2 weeks (360 GDD)...
As we move through what has been a very rapid harvest season, there are a few things to keep in mind for preparing this crop for what likely will be a long storage period.
Corn and soybean moistures have been quite low, which is very good for storage stability. However, potential for...
This article is Part 5 in a series of five blogs on how best to allocate fertilizer dollars.
One of the most frequent questions Extension professionals receive regarding soil fertility is do I need to add micronutrients to my soil fertility program? The classic answer “it depends” is...
This article is Part 4 in a series of 5 ICM blogs on how to best allocate fertilizer dollars with tight margins.
With harvest in full swing and some farmers considering baling crop residue for forage and bedding, it’s important to consider the amount of nutrients being removed from the...
While dry (dry, and drier) soybeans are common every year, this year we’re seeing the more unique situation of harvesting very dry corn grain. In some cases, loads of corn grain are headed to market at sub 12% moisture. With the current dry conditions and no rainfall in the forecast, harvest...
Chilly Mornings, Chilly Concerns: Managing Frosted Forages
Why is Frost a Concern?...
This article is part three in a series of blogs on how best to allocate fertilizer dollars.
With low commodity prices, it is very important to make wise fertilizer application decisions. While the secondary macronutrient sulfur (S) used to be adequately supplied through atmospheric...
This article is Part 2 in a series of blogs on how best to allocate fertilizer dollars.
Once you have taken soil samples, Taking Good Soil Samples, the First Step in...
This article is Part 1 in a series of 5 ICM blogs on how to best allocate fertilizer dollars with tight margins.
Soil samples are a helpful resource for farmers as they provide data to be used for recommendations for limestone, manure, and fertilizer. Soil samples should be taken every...
Just as taking good quality soil samples is important for making nutrient application recommendations, so is managing application rates and distribution of dry nutrients and lime. This also holds true for anhydrous ammonia applications and applications of solid and liquid manure but this article...
About a month ago, we received a flurry of questions on fall armyworms in hayfields and some crop fields in southern Iowa. While inquires tapered off towards the end of August, we’ve started to see another wave of reports about fall armyworms in hayfields this week. This is a reminder to take...
In a nutshell:
- Eleven cereal rye varieties and one triticale variety were screened at four Iowa State University research farms.
Key findings:
- Across sites and varieties, average cereal rye yield was 89 bu/ac, higher than any of the six previous trial...
Objective: Evaluate the yield potential of winter wheat varieties in northern Iowa.
Key Takeaways
- Winter wheat varieties have excellent yield potential in northern Iowa, ranging from 80.9 to 121.9 bu/acre with a plant height of 28.3 to 33.6 inches.
- No...
Again this year, I joined my colleague Patrick Hatting, Farm Management Specialist for central Iowa, and checked several Polk County corn fields as a part of our “Polk County Yield Tour.” After R3 (milk stage) is a great...
As the 2024 growing season winds down and as we gear up for harvest, check out what the ISU Extension and Outreach field agronomists are seeing in their regions across the state.