In terms of making use of a pre-harvest burndown, getting within the area for an correct pod evaluation is essential. When a harvest support is utilized on the applicable time, it could possibly work rapidly.
On this Soybean Faculty episode, Bernard Tobin is joined by BASF agronomist Ken Currah within the area to speak staging soybeans for a protected and efficient burndown software.
Within the space of the sector Currah is standing in, 90 per cent of the pods have modified color, and there’s a little bit of a inexperienced tinge to the highest pods, and all over the place else within the area, the crops have yellowed and are heading to maturity.
“We always look at pod colour change staging first,” says Currah. “The leaf drop number is kind of a coincidence — it’s usually 70 to 90 per cent — but what I tell agronomists and growers is don’t fall in love with the leaf drop levels, and what you’re seeing in the field at a distance. You have to look at pods to properly stage your burndown.”
The disclaimer proper up entrance for any grower, particularly these rising IP soybeans, is speak to the client or contract holder, to know what’s permitted by way of glyphosate use, says Currah.
As for pre-harvest intervals, Currah says it’s higher to be “fashionably late,” particularly when the pre-harvest support is utilized correctly, in good circumstances. Including glyphosate can push the pre-harvest interval days up, however that’s nonetheless a brief period of time from software to harvesting.
“If we’re too early, we risk leaving some green in those top, later developing pods,” says Currah. (Story continues beneath video)
White mould was widespread this 12 months and soybeans obtained fairly giant this 12 months. Currah recommends 20 gallons of water or extra per acre, to even out the illnesses pockets of the crop for extra even burndown.
Correct environmental circumstances are essential for this kind of software, ideally within the warmth of the day with a number of sunshine. “We want plants and weeds to be actively growing, they’re opened up to take that chemistry in,” says Currah.
Excessive water volumes with the right surfactant, in addition to slowing down the journey velocity, all guarantee as near optimum an software as attainable.
Currah’s ultimate tip is that desiccation isn’t weed management — by now, weeds are mature, have gone to seed, and have change into woody, and at greatest a burndown software will stop viable seed from getting into the seedbank. However desiccation timing can be a possibility to weaken perennial weeds as they’re shutting down and translocating vitamins.