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. 2015 Mar 11;6(2):103–133. doi: 10.1080/21645698.2015.1025193
Country Area of trait (‘000 ha) Average ai use GM crop (kg/ha) Average ai use if conventional (kg/ha) Average field EIQ/ha GM crop Average field EIQ/ha if conventional Aggregate change in ai use (‘000 kg) Aggregate change in field EIQ/ha units (millions)
US 2,296 0.73 1.59 22.2 40.5 −1,968 −42.0
China 4,200 2.10 3.48 87.0 122.5 −5,767 −149.3
Australia 399 0.91 2.1 25.0 65.0 −474 −16.0
Mexico 100 3.60 5.22 120.4 177.0 −162 −5.7
Argentina 484 0.7 2.42 19.9 76.7 −835 −27.5
India 11,000 0.63 1.77 18.8 74.8 −11,905 −615.8
Brazil 440            

Note:

1. Due to the widespread and regular nature of bollworm and budworm pest problems in cotton crops, GM IR areas planted are assumed to be equal to the area traditionally receiving some form of conventional insecticide treatment.

2. South Africa, Burkina Faso, Columbia, Pakistan and Burma not included in analysis due to lack of data on insecticide use changes.

3. Brazil: due to a lack of data, usage patterns from Argentina have been assumed.