EU Organic Vegetable Farms: Which Crop Rotation Is Most Profitable? AskBiz Calculates It

The rotation dilemma for organic growers#

EU organic regulation (EU 2018/848) requires crop rotation as a core soil management practice, and most organic vegetable farms use 4-6 year rotations mixing cash crops with green manures and nitrogen fixers. But which sequence maximises profit? A field growing organic courgettes (€1.80-3.50/kg farmgate) followed by potatoes (€0.40-0.80/kg) followed by green manure (zero revenue) has very different economics from tomatoes followed by beans followed by lettuce. Most organic growers design rotations for agronomic reasons — pest breaks, nitrogen balance, soil structure — but rarely model the financial impact of different valid rotation sequences.

How AskBiz models rotation economics#

Enter your field records: crop, area, yield (kg), revenue per kg, input costs (seed, irrigation, labour, compost, pest management), and any EU organic subsidy payments (typically €250-600/ha under CAP Pillar II). AskBiz calculates profit per hectare per crop and then models different rotation sequences over a complete cycle. Ask: 'Compare my current rotation (courgette-potato-green manure-carrot) with an alternative (tomato-bean-green manure-lettuce) across all four fields over 4 years' and get a total-margin comparison that accounts for each crop's yield on each specific field — because soil type, microclimate, and field infrastructure (polytunnels, irrigation) mean the same crop performs differently in different locations.

Green manure cost-benefit#

Green manure years generate zero revenue but reduce fertiliser costs for the following crop. AskBiz quantifies this: if a clover green manure saves €380/ha in compost and nitrogen inputs on the subsequent brassica crop, that benefit is credited against the green manure year's opportunity cost — typically €2,000-5,000/ha in forgone crop revenue.

Real scenario: an organic farm near Lyon#

Claudine farms 8 hectares of organic vegetables across 12 fields, selling to two wholesale buyers and a weekend market. She ran a standard 4-year rotation but suspected some crop-field combinations were unprofitable. After entering 3 years of field-level data into AskBiz, the analysis revealed: her organic courgettes in polytunnel fields averaged €14,200/ha gross margin — her best performer, open-field carrots averaged €3,800/ha but required €1,200/ha in hand-weeding labour she had not been allocating to that crop (true margin: €2,600/ha), her green manure year could be shortened from 12 months to 6 months by using a fast-growing mustard cover crop, freeing half the field-year for a catch crop of radishes worth €2,100/ha, and rotating lettuce after the legume phase (rather than carrots) yielded 18 percent more due to residual nitrogen. AskBiz modelled an optimised rotation that increased her annual margin by €11,400 across all 8 hectares — a 14 percent improvement — while maintaining soil health requirements for her EU organic certification.

CAP subsidy and agri-environment scheme tracking#

AskBiz tracks EU Common Agricultural Policy payments, organic conversion subsidies, and agri-environment scheme commitments alongside commercial crop revenue, giving a complete picture of per-hectare returns including public payments.