Seasonal and Rotational Influences
on Corn Nitrogen Fertilization in Northern Iowa

Sawyer, John; Barker, Daniel; Barker, Daniel

Seasonal and Rotational Influences on Corn Nitrogen Fertilization in Northern Iowa

File

SeasonalRotationalNorthern.pdf (186.77 KB)

Date

2017-01-01

Authors

Sawyer, John

Barker, Daniel

Altmetrics

Authors

Person

Sawyer, John

Contingent Worker Contingent Worker Contingent Worker Contingent Worker Contingent Worker

Person

Barker, Daniel

Researcher

Organizational Units

Organizational Unit

Extension and Experiment Station Publications

It can be very challenging to locate information about individual ISU Extension publications via the library website. Quick Search will list the name of the series, but it will not list individual publications within each series. The Parks Library Reference Collection has a List of Current Series, Serial Publications (Series Publications of Agricultural Experiment Station and Cooperative Extension Service), published as of March 2004. It lists each publication from 1888-2004 (by title and publication number - and in some cases it will show an author name).

Organizational Unit

Agronomy

The Department of Agronomy seeks to teach the study of the farm-field, its crops, and its science and management. It originally consisted of three sub-departments to do this: Soils, Farm-Crops, and Agricultural Engineering (which became its own department in 1907). Today, the department teaches crop sciences and breeding, soil sciences, meteorology, agroecology, and biotechnology.

History
The Department of Agronomy was formed in 1902. From 1917 to 1935 it was known as the Department of Farm Crops and Soils.

Dates of Existence
1902–present

Historical Names

Department of Farm Crops and Soils (1917–1935)

Related Units

College of Agriculture and Life Sciences (parent college)

Journal Issue

2016 Farm Progress Reports

Department

Extension and Experiment Station PublicationsAgronomy

Abstract

This project was designed to study the N fertilization needs in continuous corn (CC) and corn rotated with soybean (CS) as influenced by location and climate. Multiple rates of fertilizer N were spring applied, with the intent to measure yield response to N within each rotation on a yearly basis for multiple years at multiple sites across Iowa. This will allow determination of N requirements for each rotation, differences that exist between the two rotations, responses to applied N across different soils and climatic conditions, and evaluation of tools used to adjust N application.