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Weed control is important for yield
When the potatoes have been planted, attention must also be paid to weed control. After all, adequate weed control has a positive effect on the yield and causes fewer problems during harvesting. The right choice of means is of crucial importance here. The experiences with gofor have been very positive since its introduction in 2021.
Gofor is a combination of aclonifen with flufenacet. Flufenacet is an active substance from a new subgroup for potato cultivation, namely the HRAC group 15, oxycetamides. This fits perfectly into resistance management.
Results 2023
Above are the results of the demo test on the Lelystad 2023 platform (images 2, 3 and 4). A trial in which we sowed various weeds and in which no potatoes were planted. 900 g of aclonifen / ha is applied to both objects. With the Gofor (fig. 4) 300 g of flufenacet has been added. Conclusion: the addition of flufenacet to the aclonifen makes the effect broader.
We also see this broad effect in practice on a number of common weeds such as black nightshade, sedge, peachweed and swallow's tongue. We also see a good effect with Gofor on cocksfoot, a common weed.
Thorn apple
Thorn apple is a weed that we see more and more appearing, especially in the eastern potato-growing areas. The seeds of this weed are very undesirable in the processing of French fries potatoes. Combating the thorn apple is very challenging. Gofor has shown in the research that it gives the best results, although not 100% control, but a distinctive effect!
Duration operation
The experiences from tests and demo strips in recent years have shown that the mixes in which the Gofor is used have a longer lasting effect.
The images above are from September 29, 2022 of a starch potato demo trial in Grolloo. The object with Gofor (fig. 7) clearly shows less annual annual grass.
In summary: a good long-lasting effect on annual meadow grass!
Application conditions Gofor
- To protect aquatic organisms, use in the cultivation of potatoes on plots bordering surface water is only permitted if a technique from at least the DRT95 class is used on the entire plot in combination with a cultivation-free zone of at least 150 centimeters. (measured from the center of the last crop row or the last plant in the row to the entrance to the ditch).
- Plots that do not border surface water have no additional restrictions.
seed potatoes
The use of Gofor in seed potatoes is not immediately recommended. This is due to possible crop reaction when Gofor is applied shortly before emergence and a lot of precipitation follows immediately afterwards. This is only a temporary crop reaction.
Advices
Potatoes for consumption:
Sencor tolerant varieties
- 0,25 – 0,75 l Sencor + 3-4 l Boxer + 2 l Gofor / ha
- 3-4 l Arcade + 2 l Gofor / ha
- 0,25 – 0,75 l Sencor + 3-4 l Boxer + 0,15 – 0,25 l Centium + 2 l Gofor / ha
Sencor sensitive breeds
- 2 l Proman + 3-4 l Boxer + 2 Gofor / ha
- 2 l Proman + 3-4 l Boxer + 0,15 – 0,25 l Centium + 2 l Gofor / ha
- 2 l Gofor + 2 l Sinopia
Starch potatoes:
- 0,35 l Sencor + 1,0 Gofor / ha
- 2,5 l Arcade + 1,0 Gofor/ha
- 1,5 l Arcade + 1,5 l Gofor / ha
