BASF shared early results from its continued evaluation of application technology as low as one gallon per acre (GPA) for Headline® fungicide with attendees at the National Agricultural Aviation Association’s (NAAA) national conference today.
Jim Gaffney, Ph.D., agricultural aviation market manager for BASF, and Amber Shirley, Ph.D., and Nick Fassler, technical marketing managers with BASF, presented the early research results, which showed that Headline applied using as low as one GPA volumes provided yield and performance that was equal to that gained by using two GPA. The authors emphasized that Headline applications in less than two GPA water volumes in not an EPA-registered use, and such volumes should not be used for any crop.
In the tests, Headline applications were applied to corn, soybean and wheat. Evaluations of droplet size and distribution, coverage, disease control and grain yield of the tested crops were conducted.
“More studies will be required to determine the best application methodology for Headline, but we’re very encouraged with the results we’ve seen so far,” Dr. Gaffney said. A submission for this use also will be made to the EPA.
Small-scale testing studies were conducted across the United States comparing various application technologies to determine the effectiveness of Headline in carrier volumes as low as one GPA. Last year, BASF introduced two GPA carrier volume for Headline, which reduced the required volume at that time from five GPA.
“As the demand for aerial application services has risen, so has the need for greater application efficiency,” Dr. Gaffney said. “The goal of these studies is to find solutions that meet the growing demand of aerial services while improving efficiencies in time and fuel and decreasing equipment wear and tear. Low water volume application technologies may offer that solution.”
Based on initial results, good coverage was achieved as low as one GPA, with proper calibration and set up. Larger and less uniform droplet sizes were more likely at two GPA, but more work needs to be done to determine why differences were observed. Drift also was adequately controlled and equal to two GPA applications.
Yield measurements also showed positive results. Headline delivered similar yield benefits, regardless of application type or volume. In some locations, corn yield was up to 50 bu/A higher than the untreated check.
Early Study General Results for Low-Volume Application of Headline
• All systems provided adequate coverage at one GPA provided proper calibration and system set up
• Optimum coverage was dependent on uniform droplet size
• Larger and less uniform droplet size was more likely at two GPA
• Drift was adequately controlled at one GPA and equal to two
Early Study Yield Results for Low-Volume Application of Headline
• In general, no significant difference among application technology types or volume of application
• Soybeans (Mississippi) – Headline provided a 10 bu/acre increase
• Corn (Illinois) – Headline provided a 50 bu/acre increase