New Rego in Field Peas and Faba Beans:
Exciting news for Overwatch users! Overwatch is now registered to be applied IBS before field peas and faba beans – just in time for sowing this year.
Faba beans and field peas look to have excellent crop safety, and when appropriately applied, Overwatch will be a great option to get away from Propyzamide for grass control while also taking some of the pressure off our in-season grass sprays.
An added bonus will be great control of bifora, wireweed and sow thistle, which can often be challenging to control in these crops, plus the suppression of capeweed, prickly lettuce and wild radish.
The biggest question about the new Overwatch registration was, ‘we roll our beans and peas. How is this going to affect us?’
The statement from FMC is as below:
FMC does not consider that there would be any significant impact on crop vigour or yield when the practice of rolling is used for faba beans or field peas when Overwatch® Herbicide is applied and incorporated by sowing (IBS).
FMC emphasises this is where:
1. positional separation between the herbicide-treated soil and the seedling can be maintained;
2. there are normal growing conditions free of biotic or abiotic stresses;
3. Overwatch® Herbicide has been the only pre-emergent herbicide applied;
4. the rolling of the crop has occurred within the correct developmental stages; and
5. the soil is not too moist.
(Note: attention should be paid on light, sandy soils that are more prone to soil movement into the furrow through cultural, mechanical or environment influences as they can all bring the seedling into closer proximity to the treated soil).
The impact of the practise of rolling faba beans and field peas was not assessed during the development of Overwatch® Herbicide and so the cautions referred to above should be emphasised to growers.
Reminders When Using Overwatch:
Like many of our growers, you probably played with Overwatch last season. Overall, there were mostly good results, with the occasional disappointment. But we learnt a lot about the product in its first year. We and FMC recommend being very careful at seeding time again this year.
For the highest level of safety, use knife-point press wheels with good seed-soil separation and go slow to avoid treated dirt being thrown back into furrows. Get the seed down to at least 3cm for wheat, barley, faba beans and peas, and at least 1.5cm for canola. The condition of the soil is also important. A moist soil profile is ideal to stop the chemical from moving too quickly down the profile during a significant rain event.
These are just a few things that you need to remember, but it is essential to read the label before using new chemistry so there isn’t anything else that could be detrimental to your crop.
Our Top 7 Tips:
- Sow at least 3cm deep (and 1.5cm for canola)
- Stick with premium glyph – like Crucial: Use premium glyph such as Crucial and keep up constant agitation if concerned with some sediment in filters. Try to restrain from using 450 or K salt glyphs and ensure plenty of water is in the tank.
- Check mix partners with your agro – For anything above a 2-way mixture, and for compatible products, please check with your agronomist. Feel free to call us for any queries.
- Don’t speed, and ensure good soil throw – Ensure there is good soil throw, throwing dirt from the furrow but not into the neighbouring furrow. **Also, use the correct sowing equipment for the crop you are sowing.
- Prepare to see bleaching – Bleaching of crops is likely to happen more common in Barley and Canola than Wheat, however, FMC claim that there is no yield penalty.
- Stick to the rate – Make sure you do not use any less, or any more, than the 1.25L/ha rate and avoid excessive overlaps.
- Be mindful of soil type – Sandier soils, or rockier/stonier soils have shown more crop effect, particularly in barley – which is the most sensitive crop type.
And of course, if you have any queries or concerns, ring and chat to one of our agronomists.