The adoption of innovations, such as alternative crop establishment systems, can have significant impacts on farming systems and sustainability. The recent increased adoption of non-inversion establishment systems in Ireland allowed for an evaluation of technology adoption practices and information source use and access. Of the 154 arable growers surveyed, 50% practiced plough-based establishment and 50% used non-inversion establishment (min-till, strip-till, and direct drill systems). Differences in socio-demographics, farm characteristics, innovation adoption preferences, information sources, and information access methods used by growers who operated different systems were recorded. Direct drill growers had higher formal education levels and more off-farm employment than other growers and were prepared to take more risk than min-till growers, who were prepared to take more risk than plough-based growers in technology adoption scenarios. For both major change and agronomic decisions, non-inversion growers (especially direct drill) had substantially more non-Irish information sources in their top three information sources, suggesting the need for more national research on these systems in Ireland. Access to information through in-person interactions and print media was preferred by most. This study highlights the risk, where appropriate research is not available, of early adopters overly relying on non-validated information, potentially leading to the adoption of less sustainable practices.

Crop establishment system choice is crucial for growers, with various options differing in tillage type, depth and intensity. In Ireland, plough-based establishment dominates, but interest in and adoption of non-inversion systems is growing. These systems have proven successful in drier climates, where they evolved, but their performance under wetter Atlantic-influenced conditions is less studied. Limited research indicates challenges such as increased grass weed pressure, inconsistent yields, poorer crop establishment and reduced suitability for spring cropping. Additionally, the suitability of conventional replicated trials for extrapolating performance to farm level is frequently questioned for systems-type research. This research combines two complementary studies: a replicated field trial and detailed on-farm studies. The performance of wheat grown following a break crop in plough, min-till and direct drill systems was evaluated using both methods over three seasons. In the replicated trial, where management and input use were consistent across treatments, variation was recorded in plant densities and growth with only minor effects on yield. In contrast, the on-farm study, where management and input use varied between systems, showed no variation in plant densities and growth but did reveal significant yield differences. These were associated with input use and establishment system. The on-farm study provided valuable insight into the range of performance of these systems in commercial settings. However, it was less effective at isolating which specific components were responsible for the observed performance differences between systems.

Rising production costs have increased interest in lower-cost, non-inversion crop establishment systems in Ireland, yet uptake remains relatively limited. Growers’ perceptions of relative performance of innovations compared to current practice are key determinants of adoption. We surveyed 154 Irish arable growers (77 plough-based, 59 min-till, 18 direct drill) to assess perceived performance of min-till and direct drill across multiple parameters relative to ploughing to identify potential barriers to adoption. Respondents rated impacts on Likert scales; analyses summarized response distributions and between-system differences. For example: >30% of min-till growers believed min-till winter cereal yields exceed ploughing, compared with 0% of plough and <10% of direct drill growers. Growers generally favoured their own establishment system, consistent with adoption theory. Potential barriers to non-inversion adoption included perceived lower establishment reliability, crop performance concerns (especially spring crops), and anticipated increases in weed pressure, herbicide reliance, and herbicide resistance development risk. Several perceptions diverged from the Ireland-relevant literature, revealing both knowledge gaps (notably establishment stability and winter/spring crop performance of establishment systems) and misperceptions (including establishment system on soil structure). Targeted research to address knowledge gaps, combined with focused, grower-centred knowledge exchange, is required to support evidence-based evaluation and sustainable adoption of establishment systems in Ireland.