Faster emergence for rapid potato growth
Effective control of soil borne pests can ensure potato crops get up and out of the ground faster, with benefits that last right through the season.
Results of new trials, presented at Syngenta Potato Science Live events, have shown Nemathorin control of PCN enabled faster and more consistent crop canopy development, with benefits for weed suppression and greater photosynthetic activity delivering higher yields.
Research by the SRUC, in Arbroath, showed an average 31% greater ground cover 64 days after planting with Nemathorin treated crops of Harmony and Maris Piper in a field with a known PCN population, including G. pallida at 34 eggs per gramme of soil.
“The variety Harmony is known for its partial resistance to both G. pallida and G.rostochiensis, however it still responded very positively to the Nemathorin treatments, with plots showing up to 40% greater ground cover compared to untreated,” reported Syngenta Area Manager, David Wilson.
“The Piper, which is known to be particularly susceptible to G. pallida, was even more responsive to the effective PCN control.”
He reminded growers that G. pallida is the most challenging soil pest, with an AHDB survey revealing that 48% of tested land was infected with PCN populations – and of those 95% contained G. pallida, with just 5% purely G. rostochiensis.
“Pallida cysts have a longer hatching period over the growing season, compared to G. rotsochiensis,” highlighted Mr Wilson, “which makes the extended control offered by Nemathorin especially important to protect roots from damage and develop healthy plants.”
Mr Wilson pointed out that fast ground cover helps the crop to shade out weed seedlings and get the best possible results from residual Defy pre-emergence herbicide applications.
“Furthermore, the greater cumulative light interception by the bigger canopy sets the foundation for higher yields,” he added.
The SRUC trials showed that Nemathorin treatment produced an average 24 t/ha yield increase on the Maris Piper over untreated, and over 16 t/ha compared to fluopyram treatments. In the Harmony crop the yield increase was more than 20 t/ha over untreated and 14.5 t/ha compared to fluopyram.
“For growers and agronomists looking to optimise an Integrated Crop Management Programme getting the crop emerged and growing rapidly is the key first step,” advocated Mr Wilson.
“These trials have demonstrated that, where PCN is recognised as an issue, Nemathorin has an essential role in assuring a sustainable potato operation.”