Rethinking Oilseed Rape - The Promise of Companion Cropping

In this special edition of the Agricology Podcast, we introduce an exciting new research project investigating how companion cropping can support pest, weed, and disease management in oilseed rape (OSR). Head of Agricology Matt Smee is joined by Duncan Coston (Entomological Research Consultant and Project Lead) and Lynn Tatnell (Weed Biologist at ADAS) to explore why OSR can be such a challenging crop for UK farmers and how companion cropping could offer a more resilient, regenerative way forward.  They discuss topics such as:  What companion cropping involves in practice.  How this technique could help manage pests such as cabbage stem flea beetle. The benefits of working in partnership with farmers and researchers in Sweden.  What the project is hoping to achieve over the next three years. How farmers in the UK can follow the research or get involved in trials.  We hope you enjoy listening!  Show notes  This podcast is part of a three-year research project investigating how companion cropping can support pest, weed, and disease management in winter OSR in Sweden and the UK.  Running from January 2025 to December 2027, the study 'Companion Cropping in Winter Oilseed Rape' aims to develop integrated pest management (IPM) strategies that reduce reliance on pesticides, offering growers practical and organic crop protection techniques.  The project has been generously funded by the Ekhaga Foundation and is a collaboration between ADAS, Agricology and Agrovast.   Read more about the project and how you can get involved in the trials here.

This is the last episode of a new series exploring agroforestry, in which we use the elements as a framework to deepen understanding and challenge assumptions around trees on farms. The overarching aim is to explore how trees on farms contribute to more than just individual functions, holding the ability to transform whole landscapes and ecosystems. This episode dives into the human element of agroforestry. Wallace Currie welcomes Andy Dibben, Bid Webb and Dr Jonathan Code who focus on the educational and social dimensions that shape how agroforestry is understood and adopted. We explore the importance of co-design, community networks, shared knowledge, and long-term relationships in building agroforestry systems that work for both land and livelihoods. Show notes: Find out more about the series here. Explore the Agricology Agroforestry Hub here.

This is the penulitmate episode of a new series exploring agroforestry, in which we use the elements as a framework to deepen understanding and challenge assumptions around trees on farms. The overarching aim is to explore how trees on farms contribute to more than just individual functions, holding the ability to transform whole landscapes and ecosystems. In this episode we take a detailed look at the theme of 'Air' - an ethereal element with very tangible impacts for farmers, growers and livestock. Wallace Currie is joined by The Agroforestry Research Trust founder and world-renowned forest gardener Martin Crawford, Chief Executive of the Soil Association and agroforestry pioneer Helen Browning, and Dr Will Simonson, Principal Researcher in Agroforestry at the Organic Research Centre. They explore how trees can shape airflow, shelter crops and livestock, and support vital pollinators. They discuss how agroforestry can change local conditions dramatically, and how this can benefit the health of the soil and livestock.  Show notes: Find out more about the series here. Explore the Agricology Agroforestry Hub here. Find out about the Agroforestry Handbook here.  

This is the third episode of a new series exploring agroforestry, in which we use the elements as a framework to deepen understanding and challenge assumptions around trees on farms. The overarching aim is to explore how trees on farms contribute to more than just individual functions, holding the ability to transform whole landscapes and ecosystems. This episode investigates how trees improve soil biology, structure and fertility. Wallace Currie is joined by Lincolnshire farmer Thomas Gent and Professor Paul Burgess to explore how agroforestry systems can play a fundamental role in supporting life below ground, supporting nutrient cycling, and offering knock-on benefits for landscape productivity, ecology and climate resilience.  Show notes: Find out more about the series here. Explore the Agricology Agroforestry Hub here. 

This the second episode of a new series exploring agroforestry, in which we use the elements as a framework to deepen understanding and challenge assumptions around trees on farms. The overarching aim is to explore how trees on farms contribute to more than just individual functions, holding the ability to transform whole landscapes and ecosystems.  This episode focuses on the element of 'fire.' Guest host Wallace Currie is joined by Northumberland-based farmer Tom Fairfax and "hedge geek" Megan Gimber from People's Trust for Endangered Species. They dive into the role of energy in agroforestry systems; from firewood and biomass to nutrient cycling and carbon flow. They chat passionately about how trees and hedgerows can play a major role in creating low-input, circular systems that support life above and below ground, providing lasting returns for the farm and farmer.  Show notes: Find out more about the series here. Explore the Agricology Agroforestry Hub here. Explore these other useful resources: Hedgerow Masterclass with James Robinson and Megan Gimber and Productive Hedges.

This is the first episode of a new series exploring agroforestry, in which we use the elements as a framework to deepen understanding and challenge assumptions around trees on farms. The overarching aim is to explore how trees on farms contribute to more than just individual functions, holding the ability to transform whole landscapes and ecosystems. 'Water' includes exploring how trees impact flood risk, rainfall, and soil moisture. Guest podcaster Wallace Currie is joined by Ben Raskin, Head of Agroforestry at the Soil Association and co-organiser of the Agroforestry Show, who brings a wealth of knowledge about using trees effectively to manage extremes of water in a changing climate. Colin Tosh, Senior Agroforestry Researcher at the Organic Research Centre talks about his work modelling agroforestry systems to understand how trees impact water on farms through their influence on rainfall interception, soil characteristics, and microclimates. Vicki Hird, a lady of many hats, including being Strategic Lead on Agriculture at The Wildlife Trusts, touches on the challenges of water pollution caused by agriculture and sewage companies and how agroforestry can help tackle these issues, and talks about her work with lowland peat soils. Find out more about the series here. Explore the Agricology Agroforestry Hub here.

In the last episode of the series, plant ecologist Jonathan Storkey treats us to fascinating insights on biodiversity in production systems and soil microbial communities, emphasising how context is crucial when choosing your tillage approach. He shares his journey from birdwatching ecologist to leading weed scientist at Rothamsted Reseach, where he has been studying tillage and biodiversity interactions for over two decades. He dives into the concept of "functional biodiversity"- pollinators, predators, and microbes that support food production, and how tillage impacts those delicate systems. We explore the Rothamsted long-term systems trials, where contrasting tillage approaches across different soil types are revealing nuanced shifts in yield, weed pressure, soil carbon, and microbial succession. Jonathan explains how early-stage bacteria-dominated soils differ from more stable fungal systems, and how physical disturbance resets succession. He also explores glyphosate reliance (including glyphosate-resistant weeds), weed control trade-offs, IPM potential, and the resilience of different systems to extreme weather events.

In this episode with farmer John Pawsey, we talk about the role of tillage in organic systems, balancing weed and pest pressures, how regenerative overlaps with organic, and how diversity drives success. John shares his journey from conventional spraying to organic, mixed farming (over 25 years ago). He explains why he ploughs selectively (once or twice in a six-year rotation) and how organic farming pushes innovation through the limits of its standards. His approach is rooted in observation, adaptability, and profitability. We explore how he adjusts tillage depth based on weed type and the importance of bringing complexity into your rotation and not letting one problem dominate – in relation to weeds, pests and diseases. John reflects on reducing his sheep flock, soil health gains (now having up to 6% organic matter), and embracing Groundswell and regenerative ideas with an organic mindset. He describes a farming system built on context: some years min-till, others plough, all underpinned by leys, cover crops, and diversity in crops and drilling dates. His honesty about the learning curve, headspace shifts, and financial sustainability gives real-world clarity to the tillage debate.

The third episode of the series welcomes the Organic Research Centre's Julia Cooper who shares her expertise as a soil scientist. We look at soil health from a scientific perspective, focusing on nutrient cycling, carbon sequestration, and the nuanced role of tillage across different soil types and farming systems. Julia explains how soil health is context-specific, emphasising the importance of balancing biology, water management, and soil structure, rather than seeking one-size-fits-all solutions. We dive into how tillage affects water retention, soil productivity and microbial life, and discuss trade-offs between conventional and reduced tillage, looking at how practices such as direct drilling and cover cropping interact with climate and soil type, rather than existing as binary choices. We also touch on glyphosate versus plough-use in regenerative and organic systems, with Julia advocating for pragmatic, context-led decisions. Her insights offer a roadmap for farmers to make informed, resilient choices suited to their own land and goals...

This second episode with Mark Measures explores the role of tillage in organic systems, the misunderstood relationship between tillage and soil carbon, the balance between weed control and nutrient cycling, and how tillage fits into wider farming systems. Mark reflects on 40 years in organic advice, with deep roots in research, education, and farmer engagement. He argues that tillage, especially shallow and strategic, plays a crucial role in organic farming; not only for weed control and seedbed preperation, but also for stimulating nutrient release and building long-term stable carbon. He explores common misconceptions such as the oversimplified view that all tillage depletes soil organic matter, and explains that tillage can mineralise nutrients and stabilise humus, which is essential for carbon sequestration and water retention. He also challenges the belief that zero-till is the pinnacle of organic, pointing to climate and system-specific limitations. Mark advocates for strong rotations, fertility-building leys, and shallow, context-sensitive ploughing. He emphasises that tillage must be considered as part of a broader ecological, economic, and agronomic strategy - balanced, site-specific, and always evolving.