Henry Doubleday Research Association (HDRA): Long-term crop experiments/ field studies Hunts Mill Warwick HRI Wellesbourne – 13 hectares, since 1996, investigating the performance of three cropping strategies contrasting in terms of cropping and fertility building regimes (vegetable/arable systems). Organic Unit Warwick HRI Kirton – 3.2 hectares, since 1997, investigating the performance of a field vegetable cropping strategy (DEFRA). Breeding, genetics and propagation Vegetables Crop husbandryResearch facility description