Objectives
1.How does the addition of a sequence partner to Callisto compare to Callisto applied alone with respect to efficacy and crop safety?
2. How does the efficacy of Callisto plus a sequence partner compare to post emergent commercial standards?
Background
The trial was sown on the 4th of June in Dumbleyung, WA. The pre-emergent application was IBS and the post-emergent applications were sprayed at the 4-6 leaf stage. Wild Radish and volunteer Bonito canola were spread before IBS treatments at 8 plants/m2 to mimic a medium-high weed burden. The GRS was 240ml. Calisto has a new mode of action, in group H, registered for pre-emergent control of group B, C, D, F and I resistant weeds.
PRE SEEDING
Early Knockdown – 16/3/2020: Nufarm Weedmaster DST 1.5L/ha, BASF Sharpen 20g/ha, Hasten 1%, Ammonium Sulphate 1%.
Early Knockdown – 23/3/2020: Nufarm Weedmaster DST 1.5L/ha, BASF Sharpen 20g/ha, Kamba 750 200ml/ha, Hasten 1%, Ammonium Sulphate 1%.
Immediately Pre-seeding – 3/6/2020: Nufarm TriflurX 2L/ha, Syngenta Paraquat 1L/ha, Conquest Alpha-Forte 250 SC 40ml/ha.
Early Nitrogen Application – 3/6/2020: CSBP Flexi N 80L/ha.
SEEDING
Seeding – 4/6/2020: Wheat Scepter 70kg/ha, Double Phos 130kg/ha, Sulphate of Potash 50kg/ha, Evergol Energy seed treatment 130ml/100kg, Impact Infurrow 400ml/ha.
POST-EMERGENT
Nitrogen Top-up- 10/7/2020: CSBP Flexi N 80L/ha
Results
Percentage control rating of Radish, assessed at 3WAS, 6WAS and 11WAS.
Emergence counts 6 WAS (plants/m2)
Whole plot weed counts of Wild Radish and Volunteer canola 6 WAS.
Photos
Colt + LVE Agritone EPE
Paradigm + LVE Agritone + Uptake EPE
Callisto IBS
Logran IBS
Callisto fb Ally + LVE Agritone + BS1000
Control
Callisto fb Colt + LVE Agritone
9.9.2020
Control
Callisto fb Colt + LVE Agritone
Callisto IBS
Logran IBS
Callisto fb Ally + LVE Agritone + BS1000
Paradigm + LVE Agritone + Uptake EPE
Colt + LVE Agritone EPE
Key Findings
- At 6 WAS there was no significant difference between Callisto used standalone and Callisto followed by a sequence partner.
- Calliso Verse had better weed control than the other treatments, with the exception of Logran which had no significant difference with volunteer canola control.
- Callisto followed by a sequence partner increased residual activity 11 WAS by an average of 15% compared to Callisto stand alone. However, no significant difference to Colt + LVE Agritone and Paradigm + LVE Agritone.
- No phytotoxicity 3WAS and 6WAS
- Distinctive bleaching of broadleaf weed cotelydons 3WAS
- Callisto’s active (Mesotrione) is a group H, therefore the sequence partner must be in a different group.