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Eliminating Writer’S Block: Flipped Classroom Meets Thinkspace, Maren Wolff, Janet Johnson, Holly Bender
Eliminating Writer’S Block: Flipped Classroom Meets Thinkspace, Maren Wolff, Janet Johnson, Holly Bender
ThinkSpace Presentations
No abstract provided.
Elite Soybean Test—North, Kevin O. Scholbrock
Elite Soybean Test—North, Kevin O. Scholbrock
Northern Research and Demonstration Farm
The purpose of this test was to evaluate the experimental elite soybean lines adapted to northern Iowa. The 2012 Elite Test included 1 percent linolenic and for comparison of agronomic traits, commercially grown varieties released by Iowa State University. Oil from 1 percent linolenic soybean varieties grown in Iowa is used in the frying oil market. This oil is healthier for the consumer.
Effectiveness Of Foliar Fungicides By Timing On Hybrid Corn, Alison E. Robertson, John M. Shriver, David Rueber
Effectiveness Of Foliar Fungicides By Timing On Hybrid Corn, Alison E. Robertson, John M. Shriver, David Rueber
Northern Research and Demonstration Farm
Fungicide use on hybrid corn has increased considerably in the past several growing seasons, primarily due to reports of increased yields, even in the absence of disease and higher corn prices. A number of fungicides are registered for use on corn. The objectives of this project were to 1) assess the effect of timing of application of fungicides on standability, 2) evaluate the yield response of hybrid corn to foliar fungicide application, and 3) discern differences, if any, between fungicide products.
Corn And Soybean Potassium Uptake, Removal With Grain, And Recycling To The Soil, Antonio P. Mallarino, Ryan R. Oltmans, David Rueber
Corn And Soybean Potassium Uptake, Removal With Grain, And Recycling To The Soil, Antonio P. Mallarino, Ryan R. Oltmans, David Rueber
Northern Research and Demonstration Farm
Many field trials have been established and evaluated at the ISU Northern Research Farm, Kanawha, Iowa to study potassium (K) fertilization rates and placement methods on corn and soybean grain yield, K uptake, and soil-test K values. However, no research has investigated K recycling to the soil by maturing plants and crop residue until the next crop is planted. The amount and the timing of the K recycled to the soil should have a significant impact on soil-test K values, and should explain a great deal of usually very high soil-test K temporal variability. Therefore, plots of several ongoing field …
Corn And Soybean Response To Sulfur Application Rate, David Rueber, John E. Sawyer
Corn And Soybean Response To Sulfur Application Rate, David Rueber, John E. Sawyer
Northern Research and Demonstration Farm
Historically, sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. Soil supply, or a combination from sources such as soil organic matter, profile sulfate, manure, and precipitation have met crop S needs. However, over the past several years, S deficiencies in alfalfa and corn have been documented. Large crop yield responses have been measured in some fields containing soils with low organic matter, side-slope landscape position, or coarse soil texture, especially in northeastern Iowa. The objective of this study was to determine S response of corn and soybean in north-central Iowa.