Corn Grain Yield Trends from 2012 to 2016: A 26-Year Long-Term Experiment

Corn Yield Responses to Plant Height Variability Resulting from Tillage and Crop Rotation Systems in a Long-term Experiment

Tillage and crop rotation system effects on corn (Zea mays L.) growth and development have been studied extensively over the past 30 years, but most studies have principally focused on the effects of tillage and crop rotation on mean corn response parameters such as plant height, grain moisture content, and grain yield. As a result, many agronomists and growers have concluded that instances of ...

Corn grain yield responses to tillage systems and plant densities

Longitudinal and Spatial Analyses Applied to Corn Yield Data from a Long-Term Rotation

The statistical analysis of yield data from a long term rotation trial presents a number of challenges, as illustrated by a 10 year study on the effects of reduced chemical inputs and different cropping sequences, most of which involved corn (Zea mays L.) (King and Buchanan, 1993). Important features of the yield data from this trial include considerable unbalance, possible correlations across ...

Long-Term Effects of Nitrogen Management Practices on Grain Yield, Nitrogen Uptake, and Efficiency in Irrigated Corn

Crop management strategies that improve Nitrogen Use Efficiency (NUE) increase profits while reducing the detrimental effects on the environment associated with fertilizer nitrogen (N) loss. Effective N management should include several critical factors that are very interrelated. A study was conducted at the Panhandle Research and Extension Center, Goodwell, OK to evaluate the effects of multi...

Modeling Long-Term Corn Yield Response to Nitrogen Rate and Crop Rotation

Improved prediction of optimal N fertilizer rates for corn (Zea mays L.) can reduce N losses and increase profits. We tested the ability of the Agricultural Production Systems sIMulator (APSIM) to simulate corn and soybean (Glycine max L.) yields, the economic optimum N rate (EONR) using a 16-year field-experiment dataset from central Iowa, USA that included two crop sequences (continuous corn ...