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Proso millet is the best-supported direct summer-cereal alternative to sorghum in the European evidence available, particularly for Mediterranean-like, rainfed and low-input conditions. Chickpea can diversify grain production in suitable regions, while lupin, foxtail and pearl millet, teff, annual lucerne, blue lupin, sulla, forage lentil, cowpea, lablab and camelina address forage or protein objectives rather than serving as interchangeable sorghum substitutes.
There is no single Europe-wide replacement. Soil, rainfall pattern, crop duration, planting and harvest windows, intended use, seed supply, rotation and a reliable buyer must be checked locally before changing acreage.
What can replace sorghum, and for what purpose?
The first decision is whether the farm needs a summer grain, a forage crop, a protein crop or simply a drought-resilient break in the rotation. “Drought-tolerant” describes a stress response; it does not guarantee the same harvest date, feed value, market or gross margin as sorghum.
Proso millet: the closest grain-cereal candidate
Proso millet has the strongest directly relevant European field evidence among the options identified. The EU CAP Network’s Resilient Summer Crops project examined proso millet and sorghum as summer crops under conditions that include rising temperatures and reduced rainfall. Its conclusions focus on environmental conditions and crop-duration differences rather than naming one crop as universally superior.
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A three-year experiment in Ravenna province, Emilia-Romagna, compared rainfed proso millet, sorghum and maize under low-input organic management. In that trial, proso millet performed consistently and exceeded maize for yield and water-use-efficiency stability under the tested conditions. The authors also found potential in both millet and sorghum based on yield, water-use efficiency, disease tolerance and weed competition. These are site- and management-specific results, not proof that millet will be more profitable than sorghum on every European farm. The full study is available through the European Journal of Agronomy.
A separate 2022 assessment presents proso millet as a possible summer-cereal resource for the European Mediterranean, examining adaptation to drought, low-input field conditions and water-related traits. It supports local testing rather than a continent-wide guarantee; see the Agronomy assessment.
Chickpea: a grain-legume diversification option
Chickpea answers a different agronomic need from millet. An EU CAP Network project reports adaptation to drought and heat under agroecological conditions in the Pannonian region. It can therefore be considered where a farm wants a grain legume and has an outlet for the crop, but the evidence does not establish chickpea as a universal replacement for sorghum’s summer cereal role. Project information is available at the EU CAP Network.
Lupin and other options
Lupin can support diversification and protein production. Mixture design and harvest reliability are identified concerns, so it should be assessed as a protein-crop strategy rather than assumed to be an easy cereal swap. For forage, a February 2026 Swiss Agricultural Research report lists foxtail and pearl millet, teff, annual lucerne, blue lupin, sulla, forage lentil, cowpea, lablab and camelina as candidates studied for dry summer conditions. The list is a starting point for local evaluation, not a European recommendation; consult the Agroscope report.
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How the evidence compares
No source supplies a single European dataset measuring every candidate with the same methods. The table therefore separates established findings from questions that must be answered locally.
| Crop or group | Primary purpose | Where evidence is most relevant | What is established | What remains local or unstated |
|---|---|---|---|---|
| Proso millet | Summer grain cereal; potentially feed or food depending on outlet | Mediterranean-like, rainfed, low-input systems | Consistent performance in a three-year Ravenna trial; greater yield and water-use-efficiency stability than maize in that trial; drought and low-input adaptability assessed in Mediterranean work | Europe-wide profitability, exact yields, variety ranking, market price and best sowing date are not stated |
| Sorghum | Summer grain or forage benchmark | Already used as the comparison crop in the cited summer-crop work | Potential for yield, water-use efficiency, disease tolerance and weed competition in the Ravenna study | Whether an alternative beats sorghum on a particular farm depends on local costs, markets and stress pattern |
| Chickpea | Grain legume and rotation diversification | Pannonian agroecological conditions | Project evidence reports adaptation to drought and heat | Direct comparison with sorghum for yield, water use, harvest timing and margin is not stated |
| Lupin | Protein crop or diversification; some systems may use mixtures | Region- and mixture-dependent | Recognised as a diversification and protein option | Mixture design and harvest reliability can be concerns; comparable European performance data are not stated |
| Foxtail and pearl millet, teff, annual lucerne, blue lupin, sulla, forage lentil, cowpea, lablab and camelina | Forage or catch-crop purposes | Dry-summer forage investigations, including Switzerland | Listed as candidate plants in the 2026 Agroscope report | They are not interchangeable grain substitutes; local yield, forage quality, establishment and harvest data are not stated |
Check regional fit before changing a field
European climate-adaptation guidance stresses that stressors differ by region and that adapted varieties can help manage abiotic stress. Use the European Environment Agency and Climate-ADAPT guidance to frame the assessment, then obtain regional agronomy advice.
1. Define the crop’s job
Write down the product that must leave the field: dry grain, whole-crop forage, a catch crop, livestock protein, or a rotation break. A crop that tolerates a dry July but cannot be harvested with available machinery or sold to a buyer is not a practical replacement.
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Separate spring establishment risk from summer drought. Record rainfall timing, irrigation access, heat events, frost risk, soil depth, drainage and the expected harvest window. A crop’s response to water shortage can vary with growth stage, so “annual rainfall” alone is not enough.
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3. Match crop duration to the rotation
The Resilient Summer Crops project specifically highlights differences in crop duration. Check the previous crop’s removal date, the proposed sowing window, the next crop’s required establishment date and the machinery sequence. A longer or later crop can erase an apparent water advantage if it delays the following crop.
4. Verify seed and variety access
Ask a local adviser or seed supplier which varieties are adapted to the farm’s latitude and soil, whether certified seed is available in the required quantity, and whether the crop has been tested nearby. European guidance identifies adapted varieties as one tool for managing abiotic stress, but adaptation is regional rather than automatic.
5. Confirm the outlet before sowing
For grain, obtain written specifications from a buyer, feed mill or on-farm ration plan. For forage, agree on harvest form, dry-matter requirements, storage method and livestock use. Include cleaning, drying, transport and rejected-load risks in the budget. Do not infer a market from the existence of a research trial.
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Use the same worksheet for every candidate:
- Expected yield range and stability from local trials or adviser data
- Water requirement and likely water-use efficiency under the farm’s rainfall pattern
- Seed, fertility, weed, disease, harvesting, drying and storage costs
- Crop duration and effect on the following crop
- Harvest reliability in a wet or late season
- Rotation, soil-cover and disease-break effects
- Price, contract terms or dependable on-farm use
Using proso millet as a sorghum alternative
Proso millet is the logical first crop to test when the objective is a rainfed summer cereal in a Mediterranean-like environment. The Ravenna evidence is useful because it compares millet with sorghum and maize under low-input organic management over three years, rather than relying on a single season. Its result—consistent millet performance and stronger yield and water-use-efficiency stability than maize at that site—supports a pilot, not an automatic whole-farm switch.
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Build a fair farm pilot
- Select a representative field. Include the soil type, slope, drainage and weed pressure that dominate the farm, not an unusually favourable corner.
- Keep a sorghum comparison. Use adjacent strips or a split field managed with the farm’s normal sorghum practice so weather effects are visible.
- Use locally advised establishment. Obtain sowing date, seed rate, fertility and weed-control recommendations for the selected variety and soil. The cited studies do not provide a universal European recipe.
- Record operations and weather. Log planting conditions, rainfall or irrigation, field passes, disease and weed observations, harvest date, moisture and drying needs.
- Measure more than tonnes. Calculate saleable or usable output, water used, input cost, harvesting cost, storage loss and gross margin. Record whether the crop fits the next rotation step.
- Repeat before scaling. A single favourable or failed season cannot distinguish crop potential from weather luck. The three-year Ravenna design illustrates why repeated seasons matter.
When chickpea or lupin makes more sense
Choose chickpea when the farm’s goal is a grain legume and the region has an established production and marketing pathway. Its reported drought and heat adaptation in the Pannonian project does not answer questions about every soil, disease complex, harvest date or buyer. Compare it with the farm’s existing legume options, not only with sorghum.
Lupin belongs in a protein-crop discussion. Before sowing, decide whether it will be grown alone or in a mixture, how the crop will be separated or harvested, and what happens if maturity is uneven. The identified evidence flags mixture design and harvest reliability as practical concerns; those risks should be costed rather than treated as minor details.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Forage and catch-crop choices
If the farm needs summer forage, comparing every candidate with grain sorghum is misleading. Foxtail and pearl millet, teff, annual lucerne, blue lupin, sulla, forage lentil, cowpea, lablab and camelina appear in the 2026 Swiss list of plants studied for dry summer conditions. Their suitability depends on livestock requirements, cutting or grazing schedule, conservation method, establishment reliability and seed access.
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Common mistakes and how to avoid them
Confusing drought tolerance with profit
Stress resilience can protect yield in a dry year, but margin also depends on price, cleaning, drying, labour, machinery and demand. Calculate these items before assigning a crop a “low-risk” label.
Transferring one region’s result across Europe
Ravenna, Mediterranean Basin and Pannonian findings answer different climatic and production questions. The Joint Research Centre’s review of neglected and underutilised crops identifies several millets associated with drought or heat resilience, but it is a broad review rather than a local agronomic prescription; read it at the JRC report.
Ignoring crop duration
A summer crop that stays in the field longer can disrupt autumn sowing, forage supply or labour availability. Put planting and harvest dates on the same calendar as the whole rotation.
Choosing a crop without seed or a buyer
Novel crops can fail commercially even when they grow well. Confirm certified seed, variety suitability, agronomic support, storage and an outlet before committing acreage.
Calling forage candidates grain replacements
The Swiss candidate list is valuable for forage exploration, but it should not be presented as evidence that every listed species can replace sorghum grain. Keep grain, forage and protein objectives separate in budgets and trials.
A practical decision rule
For a rainfed Mediterranean-like farm seeking a summer cereal, test proso millet first alongside sorghum and use local measurements to decide whether stability, water use and total cost justify expansion. For a Pannonian farm seeking a grain legume, investigate chickpea with regional advice and a confirmed buyer. For protein diversification, assess lupin with particular attention to mixture and harvest logistics. For livestock forage, select from the dry-summer candidate list according to biomass timing and conservation needs.
European climate adaptation is therefore a portfolio decision, not a search for one magic crop. The most defensible choice is the candidate that matches the farm’s stress pattern, rotation calendar, machinery, seed supply and end use—and that proves its reliability in replicated local seasons.
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