Weed and pest control in beets
A good fodder beet crop is an excellent source of quality, cost effective dry matter. Protecting your investment in preparing and sowing down the paddock can be done by following a few simple steps.
Multiple application programmes are recommended for both weed and pest control. Plan for one pre-emergence application followed by at least two post-emergence applications if weeds continue to germinate. This will control each strike of emerging weeds and maintain an effective layer of residual herbicide in the soil to help delay the next strike.
Tank mixing of beet selective herbicides is recommended to improve the spectrum of weeds controlled. If an application is delayed by weather or other factors, rates need to be increased.
Key points for successful weed control in beets:
- Paddock selection is critical as beet is a high input, high yielding crop. Prior planning and management help minimise the weed seed burden in the soil. Identifying suitable beet paddocks well in advance is important to eliminate difficult weeds prior to sowing. A programmed approach is required to control rhizomatous and stoloniferous rooted plants such as couch, Californian thistle and yarrow.
- Apply a pre-emergence treatment after sowing and before the crop or weeds have emerged. For best results, apply to moist soil with rainfall or use overhead irrigation soon after application to incorporate the herbicides into the soil surface.
- For post-emergence applications, treatment at the cotyledon stage of the weeds is the most important factor for maintaining effective weed control. Larger weeds become progressively harder to control. Walk paddocks regularly and look closely to check if there has been a recent strike of weeds. For high organic matter soils (over 10 percent OM), use post-emergence treatments only. Start as soon as the crop has reached cotyledon stage and the first strike of weeds are visible. Repeat after each new strike of weeds.
- Tank mixes are recommended for broad spectrum weed control for both pre and post-emergence applications.
Two approaches can be used:
> A low-dose programme uses lower rates applied at closer intervals (7-10 days) to improve crop tolerance and where the factors mentioned below are not normally an issue. This programme is less common and used more in horticultural situations such as red beet.
> The most common and recommended programme uses slightly higher rates applied at longer intervals (12-21 days). This helps reduce the number and cost of applications if weather, wind, and timely access to spray equipment is an issue. This programme provides the greatest flexibility with your farming operation.
Selecting Goltix® and Goltix Uno from Adama as your backbone to both programmes, gives you a performance certainty that comes from years of local and global experience and on-going research into the best possible options for protecting fodder beet crops.
To discuss a tailored weed and pest control programme, contact your local PGG Wrightson Technical Field Representative.
Supplied by Adama