Work Package 6 - Groundkeeper Control

Work Package Lead: Jim Wilson (SoilEssentials)

Aim

To control groundkeepers through identification and counting technology and improved management. 

Background

Groundkeepers emerge from the potato tubers left behind at lifting and produce unwanted potato plants in following crops. These volunteers enable PCN populations to multiply between potato rotations which reduces the benefit of the rotation as PCN naturally declines in the absence of potatoes.

They are becoming a bigger problem due to tighter rotations, a change in climate (warmer winters), less grass in the rotation, loss of chemicals and an increase in diversity of cash crops grown e.g., carrots and broccoli. 

Action

This WP will conduct experiments to determine the effect of groundkeeper presence on PCN populations and use precision methods to detect and control groundkeepers. This includes detailed spray maps and artificial intelligence models. The technology will be monitored, developed, and adapted throughout the project.

The chemical most commonly used to control groundkeepers is glyphosate. This WP will also determine the consequences of glyphosate loss and other potential control options. Precision sprayer technology will help target glyphosate application and encourage responsible use. The incidence and extent of groundkeepers will be identified and combined with data from SASA and other agronomic factors to further support the development of a Decision Support System (DSS, Work Package 2).

More information about the technology that will be used in this work package can be found on the SoilEssentials website - SoilEssentials | Precision Farming Solutions By Farmers for Farmers

Publications

The PCN Action Scotland field trial 2023 report - A field trial investigating the resistance and tolerance characteristics of eight potato varieties to Globodera pallida in Scotland

September 2024

In 2023 a field trial was established which aimed to provide information on the integrated control of Globodera pallida. This report publishes the results of the field trial planted at Barnyards Farm on 02/05/2022 - a location with a moderate-high PCN population. The trial consisted of 8 potato varieties (Maris Piper, Elland, Eurostar, Buster, Amanda, Karelia, Lanorma, and Paradox) with varying levels of resistance to both G. Pallida and GRostochiensis. Replicates of each variety were treated with either Nemathorin 10G (30 kg/ha, a.i. Fosthiazate), Velum Prime (0.625 L/ha in furrow a.i. fluopyram), or left untreated.

A desk based review of alternatives to glyphosate to control groundkeepers

May 2023

Glyphosate is the main herbicide used to control potato groundkeepers. A desk based study has been undertaken to review alternative control methods and this report considers chemical, non-chemical, and integrated options while providing information on the consequences if glyphosate was not available as a control option.