Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Abstract

A successful water management program needs updated field area data for different crops. Determining the field area for a specific crop is not feasible by applying traditional methods. In the study, we used IRS-P6 satellite data and LISS III and PAN to measure the rice field area in the Lenjanat County, Isfahan. The geometric, radiometric, and topographic correction was applied to the images in the first step. In the next step, experimental data were collected to train the image processing system. The infrared waves and water indicators were used to locate the rice fields. The image processing system also was able to determine the farms, orchards, urban area, roads, and rivers in addition to the rice fields. The system accuracy was 95%, and Cohen kappa accuracy was 94%. The rice field area was 6500 hectares. Considering the rice field area and the water need for rice, the required irrigation water was estimated at about 14000 to 20000 m³ for this county. Results showed that this technique can be used to determine the different crop field area with a high accuracy.