Google Earth is one fucking wicked time machine.
If not I suggest, in the interests of science, re-running the experiment over a long enough time period to gather sufficient data to provide a conclusion.
Since we're dealing with a great many unknowns here we have to admit the potential for the phenomena under consideration being triggered - without evidence one hesitates to draw too rapid a conclusion - along Quantum, Catastrophe, or Emergent Behavior lines. Thus, it's conceivable the SoCE (Sex on Crop Effect) requires, on may put it, a large amount of whoopie per hectare to manifest.
I suggest a Request for Funding be written and sent to the appropriate French and EU agronomy departments and agencies in order to properly study the matter.
The laboratories, if I may call them that, will of course be screened so that experiments may be conducted under the proper APA safeguards and ethical protocols. Those outside of the research team will not be allowed within the research and test areas.
(Unless they buy the moderately priced tickets available only at the entrance to the observation deck.)
{And I'd better add: :-) }
Funding would be appreciated, but it would depend on the English, not the French...