Broadbalk Wheat Experiment
Exploring 180+ years of the world's longest-running agricultural experiment — continuous wheat since 1843
180+ Years
Continuous records since 1843
20 Treatment Plots
Comparing fertilizer regimes
10 Sections
Continuous vs rotational wheat
13.8 t/ha
Record yield (Crusoe, 2014)
Yield & Climate Explorer
Treatment Plots
Deep Dives
CO₂ & Yields
+50% CO₂ → only +9% yield boost
Discover why historical yield gains haven't matched atmospheric CO2 increases.
Thermal Effects
Grain weight drops 4-8% per 1°C
Extreme heat during grain filling negatively impacts harvest index and grain size.
Genotype
88% of yield gains are genetic
How modern short-straw cultivars dramatically increased yields after 1968.
Soil Carbon
FYM tripled soil C to 85 t/ha
Farmyard manure maintains and builds soil organic carbon over a century.
Nutrients
Grain Zn dropped 25-30% post-1968
The hidden cost of high yields: dilution of essential micronutrients in modern wheat.
Nitrogen
58→6 kg grain per kg N
Diminishing returns: analyzing nitrogen use efficiency across treatment plots.