Canola (Brassica napus �Hyola 357 Magnum�)���� �������������� ����������������������������������������������� S. Halley
White Mold; Sclerotinia sclerotiorum����������������������������������� ��������������� ��������������� ��������������� Langdon Research/Extension Center
Adjuvants to Enhance the Efficacy of BASF 510 (Endura) Fungicide for Control of Sclerotinia sclerotiorum, 2003.
����� Adjuvants often are recommended added to
fungicides for improved consistency under different environmental conditions.
The objective of this study was to determine if efficacy of fungicide, BAS 510
(boscalid), can be enhanced by addition of different adjuvants (Preference,
Activate Plus, Rivet, and Placement and experimental adjuvants AG 01023, AG
02059, AG 02013, AG01005, and AG 02013 + Preference). �Hyola 357 Magnum�
canola, a roundup ready cultivar, was planted for evaluation of BAS 510 with
different adjuvants 5 May with a double disk drill, disks, plot area spaced
6-inches apart, with 12 inch space followed by additional rows to reduce
potential spray drift to adjoining plots. The field, soil type Cresbard-Svea
complex, was located at the
����� All the adjuvants mixed well with the fungicide. No visible phytotoxicity was evident throughout the summer. Neither Sclerotinia nor Leptosphaeria maculans (blackleg) developed at this site but were present on the same cultivar at other station locations where supplemental water was added. A lack of precipitation during flowering, low relative humidity, and low soil moisture likely caused this difference between locations. No differences in test weight and oil were measured. A significant difference in yield was measured between BAS 510 with Preference, BAS 510 with AG 02059, BAS 510, BAS 510 with Rivet, and BAS 510 with AG 02013 and the untreated.� Some apparent yield enhancement was provided by fungicide application but the response could not be attributed to visible white mold or blackleg disease reduction. A further yield enhancement occurred with the addition of adjuvant AG02059 and Preference compared to fungicide alone. Yield enhancements with adjuvants do not occur often and warrant further investigation. Financial support for this research was received from Agriliance LLC.
Z Tested at 0.05 probability level for mean comparisons.
Y Significant at 0.028 probability level for mean comparisons