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Bean spider mite present in potato fields
The first infestation of bean spider mite can be seen on various potato plots. The warm weather that is coming will do the bean spider mite good and can quickly cause damage in the plot. Timely deployment of Batavia can prevent this.
bean spider mite
In the past 2 years, the bean spider mite has emerged, especially in the east and south-east of the country. Due to a very dry and warm season with little rainfall, the conditions were ideal for red spider mite to develop and build a population.
In 2018, this damage was limited. Minor blemishes became visible at the end of the season. Not always knowing what it was. Because a population has been built up and the conditions were again very good in 2019 (warm, low humidity, little precipitation), the damage was now observed much earlier in the season.
Fortunately, this year the conditions are better for the crop and the first infestation also occurs later in the season. But even now the conditions are good for the bean spider mite and it can strike again in the crop.
Spider mite develops very quickly in hot and dry weather with low humidity. It goes through different stages: egg, larva, protonymph, deutonymph and adults. A female lays an average of 100 eggs. Depending on the average XNUMX-hour temperature, the cycle goes slower or faster.
racial differences
Variety differences are clearly visible in the cultivation of starch potatoes and Markies appears to be very sensitive to bean spider mite in the cultivation of consumption potatoes.
Control
- Check field borders.
- When finding bean spider mite in the field edges, preventive use of Batavia on fields with sensitive varieties.
- Recommendation 0,75 l Batavia + 1 l/ha Robber:
- Conditions: crop must still be growing sufficiently, so that the absorption is still sufficient.
- Batavia works well on the larval and nymph stages. The effect is small on the adult mite. That is why early, preventive action is of great importance.
- Continue to monitor your plot and repeat spraying if necessary.
- Note: Batavia may be used after the potatoes have bloomed.
More information?
View product information and recommendations for Batavia en Robber online, or contact your local distributor and/or advisor.
