However, Prof Lin Field, head of crop protection at Rothamsted Research, said she was pleased with the outcome of the vote.

BBC: Bee deaths: EU delays action on pesticides ban

My 1979 dissertation was a model relating interannual and interseasonal variations in the shape of the atmosphere, as reflected by the surface barometric pressure field, to variations crop yields across the United States.

FORBES: Climategate II: An Open Letter to the Director of the National Center for Atmospheric Research

So, for example, chemical pesticide or pollen from genetically engineered plants wafting onto an organic crop from an adjacent field does not cause the harvest to lose its organic status.

FORBES: Is Organic Agriculture "Affluent Narcissism?"

The best evidence is a report to Anslinger by a field agent on the 1934-35 hemp crop in Minnesota.

ECONOMIST: Legalising drugs

However, heavy machinery and herbicides are required to prepare a seedbed, and with several applications of fertiliser and sprays the field will see far more machinery use than any similar organic crop.

ECONOMIST: Organic matter

Tilling, or plowing, a field prepares the soil for planting and destroys weeds, but a Roundup-ready crop doesn't require extensive tillage.

FORBES: Magazine Article