On Wednesday, February 15, Muthu Bagavathiannan, specialist in weed ecology and agronomy, presented a new tool for consultants, extension specialists and agents, and growers to assist with management decisions regarding Palmer amaranth, named PAM. Based in Microsoft Excel, the tool allows the user to input their rotation schedule, chosen varieties and other management practices. From those entries, the tool calculates the amount of weed seed present over a 10-year period, as well as the economic gains or losses during that period. In addition, it calculates the risk of the combination of practices and allows the user to compare up to 6 different management scenarios. The tool calculates risk based on the amount of weed seed present, which has been concluded to be the main reason for pigweed-related crop failures.
If you would like to see Dr. Bagavathiannan’s presentation, follow this link to the YouTube recording. During the 60-minute video, he demonstrates how to use the tool and how to interpret the results.