Crop Production

Lawrence County OPTIMA Fields On-Farm Trial: Andy Clark

1 min read
A group of people standing underneath a tent outside at a crop field day.

An illustrated logo of growing plants with the words OPTIMA Fields Alabama Extension below them.Farm Overview

  • Location: Hillsboro—Lawrence County, Alabama
  • Crop: Corn
  • Planting date: March 26, 2025
  • Variety: DKC-58-35
  • Area: 51 acres
  • Row spacing: 30 inches
  • Irrigation: Center pivot
  • Tillage: Strip tillage

Objective

  • Evaluate how integrating variable rate seeding and nitrogen rates can improve corn yield and profitability in north Alabama under center pivot irrigation.

Treatments

This trial evaluates the impact of different seeding rates and various nitrogen application levels on corn yield. The primary goal is to optimize input use by improving nitrogen efficiency, thereby minimizing excessive application. The following table outlines the different seeding and nitrogen rates tested in this trial.

Variable Rate Seeding (Seeds per Acre)Variable Rate Nitrogen (Pounds per Acre)
30,000200
32,000250
34,000300
36,000

Soil Type

A map that shows the soil type for the Clark farm trial.

Field Trial Design

A map that shows the field trial design for the Clark farm.

 

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