Dick started planting a rye cover crop in 2011 to improve his Soil Conditioning Index following soybeans and in two years made a commitment to planting multi-species nitrogen scavenging cover crops on all of his 720 rotated crop acres. To diversify his cropping system and ensure availability of winter small grains, Dick planted 13 acres of rye for harvest in 2013 and expanded to 20 acres in 2014. This Fall he planted 10 acres of winter wheat in addition to the 20 acres of rye for harvest in 2015. This will provide Dick with the majority of his cover crop seed, provide an alternative to his corn/corn/soybean rotation, reduce costs by growing legumes after small grain harvest, increasing sustainability and resilience.
Matt Liebman, and his research group at Iowa State University, has been conducting long-term research comparing two-, three- and four-year crop rotations. His recent work shows that extended crop rotations can lead to a reduced reliance on herbicides, pesticides and artificial fertilizer, and less use of fossil fuels. A Leopold Center On the Ground Video by Matt provides some insight into the topic he will be discussing on Tuesday evening.
This Farminar will be a great opportunity to gain some insight from a farmer and researcher about the opportunities and obstacles to adding a third crop to the typical corn and soybean rotation. Dick and Matt are both enthusiastic about extending and improving cropping systems to improve economic and environmental performance.
What’s up with El Nino? Short answer is still not too much. The monthly El Nino summary has been posted today at the Climate Prediction Center (see link below). The basic message is that reaching El Nino conditions is still likely (now 58%) lower than last month. Conditions in the Pacific are still not coming together well in the coupling between ocean and atmosphere. Sea surface temperatures are relatively warm.
The long range outlooks still are based on El Nino conditions occurring (updates will come out in 2 weeks). But the weak El Nino would allow other variables to impact what happens this winter including changes in the North Pacific, North Atlantic and over the pole.
End result is that some things that look like El Nino are still likely to happen during the winter. But the confidence of being a very warm winter in the northern US is somewhat less. The likelihood is lower because of the reduced El Nino chances. And even if El Nino does occur, weak El Ninos have less overall influence and can more easily be modified by other conditions.
See the full outlook from the Climate Prediction Center:
Fall is the time to evaluate corn nitrogen use efficiency by using the end-of-season cornstalk nitrate test. The test measures nitrate-nitrogen left in the corn plant following maturity.
According to the most recent USDA Crop Progress report released on October 27 just 46% of the nation’s corn was harvested so there is still time to collect samples for analysis. Ideally samples should be collected 1 to 3 weeks after maturity (black layer), however, over the course of 15 years of utilizing the test I have collected samples up to, and immediately after harvest. Post harvest samples can be collected if the corn header is raised high enough to allow an 8-inch stalk segment to be collected starting 6 inches above the ground. If using a head with shredders samples will need to be collected before harvest. Don’t allow stalks that have been harvested to get rained on before collection or nitrates will start washing out of the stalks.
The video provides a demonstration of sample collection and preparation in order to send to a lab for analysis.
In August, over 200 Corn-belt farmers, crop advisors and scientists gathered in Ames, Iowa, to discuss climate uncertainty, impacts on agriculture and what can be done to make the agricultural landscape environmentally healthy and productive. Presentations included the most recent findings by scientists, from 10 land-grant universities and an agricultural research station, who are part of a USDA-supported Cropping Systems Coordinated Agricultural Project, led by Lois Wright Morton, sociology professor at Iowa State. Videos of the conference sessions, including the farmer panel session and remarks by Secretary of Agriculture Tom Vilsack; speaker PowerPoints; posters; Resilient Agriculture Magazine; and other conference handouts are now available for viewing/downloading at www.sustainablecorn.org.
Much of the northern Corn Belt has an increased chance of above-average precipitation in October, according to the NWS Climate Prediction Center. This follows on the heels of above-average precipitation over the last 30 days across the Corn Belt.
In the map below, areas shaded in green have an increased chance of above-average precipitation in October and include the Dakotas, Minnesota, Wisconsin, Michigan, Iowa, northern Illinois, and northeast Missouri.
The main part of the Corn belt is going to get some help with heat over the next couple weeks while the northern and western corn belt will hold steady or lose ground compared to average on GDD accumulation.
The 8-14 day outlooks have been consistent over the last few days holding in a ridge of the main part of the corn belt. This situation will allow above average temperatures during this period. The additional heat will be very beneficial for the development of corn, which has been lagging a little through the season in certain places. See the 8-14 day outlook:
Northern areas of the Corn belt have been running further behind development throughout the year and have acres that are at risk of not reaching maturity or being harvested at very high moisture content based on the freeze date and additional heat through the rest of the season.
If you wish to check where you corn crop sits with current development check out this tool from the USDA – AFRI funded U2U group:
By Michelle Proctor, Senior Information Specialist, and Pat Guinan, Extension/State Climatologist, University of Missouri
Pat Guinan, University of Missouri Extension climatologist with the Commercial Agriculture Program, encourages people to use the Drought Impact Reporter (DIR) as a way to inform decision makers of drought related impacts experienced across their state. The National Drought Mitigation Center (NDMC) in Lincoln, Nebraska has rolled out newer versions of the online tool over the past few years.
“By contributing information via http://droughtreporter.unl.edu/, we can provide additional impact reports to the Drought Monitor authors, who will then use the information in their weekly drought depiction process,” said Guinan. Continue reading →
The most recent Weekly Weather and Crop Bulletin on Wednesday 23 July included the following image on corn conditions across the Corn Belt. Note that since 1995 only one other year has had a higher overall corn condition rating at this point in the growing season – 2004.
This image clearly shows the impact of the overall cooler temperatures this summer. While the cool weather has been attracting some media attention for the lack of mid-summer heat, for the most part the cool has been very good for crop conditions over the bulk of the Corn Belt. Where moisture is not limited the crop has been able to grow well. Where moisture has been limited the reduced atmospheric demands of the cooler temperatures has reduced potential stress and allowed much of the corn crop to pass through tasseling with limited stress. Note that 2004 – the then-record yield – was also a very cool summer.
Even when conditions have warmed, they have been short-lived and often accompanied by high dew points, additionally reducing the atmospheric demand on crops.
The next question becomes – can we put on enough GDDs to get the crop to reach maturity in time? The current 6-10 and 8-14 day outlooks stay cool. The previous blog post by Jim Angel talked about the outlook for the rest of the growing season.
On July 17, 2014, the NOAA Climate Prediction Center released their outlook for August and beyond.
Currently, we have significant heat through the High Plains and the Midwest. But it will be short-lived. The NWS forecast show cooler conditions returning soon to the region. The outlook for August (first map, click to enlarge) includes an increased chance of below-average temperatures across the upper Midwest, while the Southeast has as increased chance of above-average temperatures. Much of Illinois, Indiana, and Ohio have equal chances (EC) of above, below, and near-average temperature.
Much of the Corn Belt has equal chances (EC) of above, below, and near-average precipitation (second map) in August. In other words, there are no clear indications of an increased risk for too much or too little rain.
Dick Sloan provided a glimpse into his evolution as a conservationist farmer along with an update of his no-till and cover crop farming practices at a June 19 Lime Creek field day.
“(I am) trying for a more resilient farming,” he told the 66 attending the Practical Farmers of Iowa sponsored event. Unfortunately, heavy rain (nearly 2 inches) and cracks of thunder kept the crowd inside the machine shed, preventing most from getting a close-up view of the practices. Continue reading →