Research Matters - Broccoli: organic vs conventional

Although there is a widespread perception that organically grown crops are healthier than conventionally grown ones, there is little experimental evidence to support this view. However, there is evidence that conventionally grown fresh broccoli is an important source of biologically active compounds and mineral elements.

In the present experiments, 'Marathon F1' broccoli plants were grown in the same geographic location both under conventional and organic production systems. The density of planting was 2.08 plants per square metre. With the conventional system, fertilisers were applied at the rate of 150kg per hectare of nitrogen (N), 60kg per hectare of phosphorous (P2O5), and 200kg per hectare of potassium (K2O). The organic plot had not been treated with herbicides or pesticides for 10 years and, for this experiment, cow manure was incorporated into the soil at a rate of 20,000kg per hectare.

Irrigation was applied throughout the period of the experiment.

Samples were taken from all plots of both treatments at various intervals, from planting up to the stage of commercial harvest, and were processed on the day of collection.

Broccoli florets are an important source of anti-oxidants, and the organically grown broccoli had a better anti-oxidant capacity at the commercial harvest stage. None of the other aspects that were tested showed any difference between the two systems of growing.

Dr Ken Cockshull, Associate Fellow, Warwick Crop Centre, University of Warwick - Proximate composition and anti-oxidant activities of organically and conventionally grown broccoli (Brassica oleracea L. var. italica) by Martinez-Tome, Martinez-Tome and Martinez-Tome (2011). Journal of Horticultural Science & Biotechnology 86 (5): 511-516. The authors' abstract of their manuscript can be seen in full at

Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Read These Next

What should growers make of the Government's migration report?

What should growers make of the Government's migration report?

By holding out the "possibility" of a seasonal agricultural workers scheme (SAWS), the Migration Advisory Committee's (MAC) long-awaited final report, published this week, makes an exception for fresh produce amid its wider call for a shift away from low-skill immigration.

Tractors: market roundup

Tractors: market roundup

Manufacturers are working to provide solutions to many challenges. Sally Drury looks at their newest models.

What does the Agriculture Bill mean for growers?

What does the Agriculture Bill mean for growers?

The publication of the Agriculture Bill this week formally kick-starts the Government's plans to implement a "green Brexit" for farming, the area of the economy most impacted by the UK's withdrawal from the EU from next March.

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +

Horticulture Week Top UK FRUIT PRODUCERS

See our exclusive RANKING of UK Fruit Producers by annual turnover plus the FULL REPORT AND ANALYSIS.

Horticulture Jobs
More Horticulture Jobs

Pest & Disease Tracker bulletin 

The latest pest and disease alerts, how to treat them, plus EAMU updates, sent direct to your inbox.

Sign up here

Professor Geoffrey Dixon

GreenGene International chair Geoff Dixon on the business of fresh produce production

Read Professor Geoffrey Dixon