Paul Kassel

Paul Kassel provides research based crop production information to area farmers and agribusiness. Educational programs are available for farmers, agribusiness, pesticide applicators, and certified crop advisors.

Areas of expertise include soil survey, crop production, soil fertility, soil conservation, and management of weeds, insects, and crop disease.

Subscribe to Kassel's newsletter, Crops Bulletin, for crop updates in northwest Iowa.

Paul Kassel
June 25, 2020 10:01 PM

There have been a few fields where topramezone – the active ingredient in Impact and Armezon – carried over from an application last June – and is injuring this year’s soybean crop. Other agronomists have reported carryover of other Group 27 herbicides on soybean this year (mesotrione,...

Crop Production
February 24, 2020 4:56 PM

CLARION, Iowa – A growing season outlook and a discussion on corn planting date research will highlight the annual meeting of the North Central Iowa Research Association March 4. The meeting will also feature an update of research at the Iowa State University Northern Research Farm at Kanawha....

Crop Production
February 24, 2020 4:46 PM

Iowa State University (ISU) Extension and Outreach will host two soil fertility workshops to help ag producers interpret soil test results and determine fertilizer needs and recommendations.

The first workshop will be held Wednesday, Feb. 26 at the ISU Extension and Outreach Sac County...

Crop Production
August 29, 2019 3:12 PM

Thistle caterpillars, late season crops disease and crop development will highlight the September 5 fall field day at the ISU Northern Research and demonstration farm fall field day.

Registration and refreshments will begin at 9 a.m. A noon lunch will be available. The field day is open...

Crop Production
August 28, 2019 3:06 PM

Check out what ISU Extension and Outreach field agronomists in NW Iowa are seeing and hearing in their areas regarding crop progress and issues showing up in crop fields.

Crop Production
August 21, 2019 5:00 PM

aerial seeding of cover crops into standing corn

Farmers and agribusiness are invited to the Allee Demonstration Farm for a field day on Tuesday August 27.  Coffee and...

Crop Production
April 19, 2018 1:30 PM

Most people say that this spring is one for the history books.  No one seems to remember a colder or snowier start to the spring.

The following are some figures...

Crop Production
June 20, 2017 10:42 AM

Consider attending one of the Nitrogen and Water Week field days next week – June 27 to 29.

Our focus of these meetings is to have attendees ‘kick the tires’ on the tile drainage studies conducted by Iowa State University. 

Nitrate in tile drainage water is on the mind of many...

Crop Production
September 13, 2016 2:27 PM

Much of the corn that was planted in mid-April is mature or nearly mature. Some hybrids really progressed a lot this past week (Sept. 5-Sept. 12). Corn planted in early May and mid-May is about 1/2 to 3/4 milk line. I think I am seeing some of the...

Crop Production
July 28, 2016 9:59 AM

A recent visit to a field with three different planting dates showed the varied crop progress in my area.

The Useful to Usable ...

Crop Production
May 26, 2016 3:13 PM

A lot of farmers worked some long hours to complete fieldwork over the weekend because of the predicted rainy weather. There have been some heavy rains in extreme northwest Iowa early this week, but much of my area has missed those heavy rains. And, as a result, a lot of fieldwork was completed...

Crop Production
May 16, 2016 1:52 PM

My area has a real range of conditions with corn planting 65-75% complete in the northwest part of my area. There is maybe 15% of the soybean crop planted in the northwest part of my area. The corn and soybean planting progress is 95%+ complete in the northeast part of...

Crop Production
May 4, 2016 1:58 PM

We have had a couple nice days and farmers are looking forward to some predicted good weather. Farmers are taking this all in stride since many have been through this before.

There has been a fairly abrupt line of heavy rainfall/planting progress in the area....

Crop Production
April 29, 2016 4:18 PM

We have had a couple windows of opportunity for fieldwork this spring. The week of April 10 to 17 saw a lot of fieldwork completed. Also, there was some fieldwork completed on April 23. I am referring to an area around Clay County and parts of Dickinson and Buena Vista counties.


Crop Production
April 19, 2016 2:42 PM

The recent rainfall broke a string of dry days for us. Spencer received about 0.7 inches of rain. Storm lake, Spirit Lake and other areas in the highway 71 corridor received a similar 0.4 to 0.7 inches. However, areas east of Highway 4 did not receive much rain and are returning to the field...

Crop Production
December 14, 2015 9:34 PM

It looks like the month of March has arrived in December. 

There have been rain amounts of 1.3 to 2.3 in the area. I know that is not much compared to the 3-4 inches of rain in central Iowa. However, it looks really wet in the area. There is water standing in the fields and water running...

Soil Fertility
November 25, 2015 12:16 PM

By: Paul Kassel
The question comes up from time to time-‘is there an alternative to the Roundup Ready based seed and herbicide system for soybeans?’  Of course there is-we have conventional varieties with conventional herbicides and there is the Liberty Link seed and Liberty herbicide. ...

Crop Production
November 19, 2015 8:09 AM

By: Paul Kassel

waterway in Clay county

The weather has turned really wet in much of my area. We are not use to seeing water running out of fields, water...

Crop Production
November 10, 2015 10:30 AM

By: Paul Kassel

Iowa State University has conducted a survey of subsoil moisture since 1955.  It is my understanding that there were some very dry conditions in the 1950s – and the ISU Agronomy department and ISU Extension responded by assessing soil moisture to help farmers...

Crop Production
October 30, 2015 1:41 PM

By: Paul Kassel

Soybean harvest has been complete in northwest/north central Iowa for a couple of weeks. 

Corn harvest is wrapping up also. I would guess that there is about 15% of the corn that is yet to be harvested.

We have experienced a very warm and dry harvest season....

Crop Production
October 2, 2015 11:20 AM

A couple of farm visits took me from Emmetsburg to Cylinder to Ringsted on October 1. I am guessing the soybean harvest in those areas is about half done. 

The big news this year is that we are seeing some exceptional soybean yields. There are lots of credible reports of 60 bu/a whole...

Crop Production
September 11, 2015 3:03 PM

Crop development progress is looking good in northwest Iowa. We are seeing corn that is in the 1/2 milk line stage as well as a few fields that have reached black...

Crop Production
August 19, 2015 4:23 PM

We have experienced quite a turnaround in weather the last four days.  Last Sunday August 16 – we were experiencing dry soil, high temperatures and crop stress.  After a late Sunday afternoon rain shower of around 0.5 inch – things were looking good. 

However, the...

Crop Production
July 31, 2015 12:12 PM

Waterhemp continues to be a problem in parts of northwest Iowa.  There is a fair amount of waterhemp that survived the glyphosate and/or Flexstar applications in late June. 

There is also a new crop of waterhemp that has germinated recently.   That fact is surprising since it has been...

Herbicide Resistance
July 24, 2015 3:17 PM

Parts of northwest Iowa are listed as ‘abnormally dry’ on the most recent edition of the Drought Monitor. I would agree with that – we are seeing some effects of dry weather this week.

Corn and soybean crops are wilting in the afternoon on some of the light soil...

Crop Production