Frequency Demonstration Report

Demonstration and evaluation of BASF’s new Frequency against standard Post-emergent broadleaf weed herbicides in barley.

Hines Hill, WA, 2019

EXECUTIVE SUMMARY

A demonstration site was sown in Hines Hill on the 16th of May 2019, to demonstrate to the extended David Grays Aglink network the efficacy of BASF’s post-emergent broadleaf weed herbicide Frequency. The break of season was on the 7th of June with 16mm rain, treatments were applied on the 22nd of July, radish at 4-6 leaf stage (Zadok GS 13-15).

All post-emergent treatments achieved adequate brownout of radish. Frequency in combination with Brom 200 provided excellent radish control. Assessments at 7, 14 and 57 DAT indicated brownout percentages of 60%, 70% and 99%respectively. The results seen in the demonstration are in line with commonly used products, Velocity, Howitzer and Talinor. Which achieved brownouts of 94%, 98% and 90% by 57 DAT respectively.

Frequency + Brom200 phytotoxicity incidence were below 10 % leaf area affected, effects were transient and subsided by the 57DAT assessment.

The late start and dry year, lead to lower than average yields. There was no significant difference between treatments, however; there were numerical variances. The average highest yields were Condor, Flight, and Talinor + LVE, averaging 667, 639 and 611kg/ha respectively. Frequency did not yield as high, with an average of 415kg/ha. in this demonstration, percentage brownout did not translate to yield. water being a limiting factor means we cannot confidently conclude which treatments were the best this year.

Frequency is a standalone group H herbicide, giving growers the ability to choose a tank mix partner that best fits their program. Allowing flexibility with application mixes and rates.

Objective

Demonstrate and evaluate the efficacy and crop safety of BASF’s new group H Frequency, with tank mix partner Brom 200.

METHODOLOGY

Data Analysis

All data analysis in this report was conducted using Microsoft Excel. Simple means, analysis of variance was used todetermine statistical significance using the least significant difference method with a 95% confidence interval.

RESULTS

Figure 1. Average percentage brownout for post-emergent treatments across 3 assessment dates.

7, 14 and 57 DAT indicated brownout percentages of 60%, 68% and 97% respectively.

Statistical analysis using a standard ANOVA, indicated there was significant difference between treatments ( P< 0.001).

Figure 2. Phytotoxicity percentage leaf area incidence, 14 DAT.

Figure 3. Yield data, harvested 11th November 2019. Expressed as kg/ha.

DISCUSSION/CONCLUSION

All post-emergent treatments achieved adequate brownout of radish. Frequency in combination with Brom 200 provided excellent radish control. Assessments at 7, 14 and 57 DAT indicated brownout percentages of 60%, 70% and 99% respectively. The results seen in the demonstration are inline with commonly used products, Velocity, Howitzer and Talinor. Which achieved brownouts of 94%, 98% and 90% by 57 DAT respectively.

Frequency + Brom 200 phytotoxicity incidence were below 10 % leaf area affected, effects were transient and subsided by the 57 DAT assessment.

The late start and dry year, lead to lower than average yields. There was no significant difference between treatments, however; there were numerical variances. The average highest yields were Condor, Flight, and Talinor + LVE, averaging 667,639 and 611kg/ha respectively. Frequency did not yield as high, with an averageof 415kg/ha. in this demonstration, percentage brownout did not translate to yield.

Frequency offers a unique opportunity as the only stand-alone group H herbicide on the market; thus, growers have the flexibility of choosing a tank mix partner depending on their circumstances and weed size. To help growers with their resistance management programs for HPPD’s.