Foliar Fertilization of Corn and Soybean
Corn and soybean take up a large amount of nutrients during growing season, amounts that are not adequately addressed by low foliar fertilization rate.
Integrated Crop Management News
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June 29 Iowa Crop & Weather Report
By Doug Cooper, Extension Communications
Listen to Doug Cooper, Extension communications specialist, as he interviews Iowa State University Extension climatologist Elwynn Taylor, integrated pest management specialist Rich Pope, and sybean agronomist Palle Pedersen.
During the weekly interview, Taylor says hot humid temperatures should be behind us for a few weeks with a return to cooler and drier weather.
Pope talks about this year's pesky weed - volunteer corn — and how it is presenting a problem for many corn and soybean producers.
June 22 Iowa Crop and Weather Report
By Doug Cooper, Extension Communications
Iowa State University Extension climatologist Elwynn Taylor returns to the weekly crop and weather report this week. Taylor is joined by integrated pest management specialist Rich Pope and corn agronomist Roger Elmore for this week's roundtable discussion on the 2009 growing season.
Taylor says hot humid temperatures will be around for a week or so, but July temperatures should moderate. Near ideal growing conditions are expected for the next couple of weeks.
Hail Injury on Corn
By Roger W. Elmore and Lori Abendroth, Department of Agronomy
Hail pounded various parts of Iowa over the last two weeks. Storm systems continue to march aggressively across the state. Shredded, twisted corn lies in their paths (Figure 1). Corn across the state ranges from 6th to perhaps the 10th leaf stage. That means that corn growing points extend above the ground. Damage to the growing point compromises recovery and yield.
June 15 Crop and Weather Report
By Doug Cooper, Extension Communications
Two words summarize the crop conversations this week — cold and weeds. Iowa State University Extension weed specialist Bob Hartzler, integrated pest management specialist Rich Pope, and soybean agronomist Palle Pedersen discuss the influence of both on Iowa crops during this week's crop and weather report.
Hartzler says the cool and wet weather is allowing weeds to get a jump on planted fields this spring. Farmers need to keep an eye on weed development to maintain maximum yields this year.
Study Results Released - Weed Control in Roundup Ready® Cropping Systems
Results of a four-year multi-state weed research project are being released to help growers understand management practices in Roundup Readyr cropping systems.
Some Producers are Now Discovering Winter-Injured Hay Fields
By Stephen K. Barnhart, Department of Agronomy
Some producers apparently made their spring hay field winter injury assessment from afar because now they are finding that their hay fields are coming up short on stand density and hay yields.
Take Time for Sprayer Cleanup
Good sprayer equipment cleaning practices should be part of responsible pesticide use.
Spray Drift Potential Increases during Warm Weather Applications
As daily high temperatures increase into the upper 70s-80s F range, mid-day relative humidity frequently drops below 50 percent. This article takes a look at the effect of temperature and humidity on pesticide drift.
Degree Days - Cool is cool
By Rich Pope, Corn and Soybean Initiative
The month of June opened with a cool week, with about 80 percent of the normal heat accumulated between May 31 and June 7. Although a bit warmer weather would accelerate crop development, Iowa crops are progressing nicely in most areas.