• Being very small, nanoherbicides will be able to blend with the soil, eradicate weeds in an eco-friendly way without leaving any toxic residues, and prevent the growth of weed species that have become resistant to conventional herbicides.

• In the fields using these techniques, yields were consistently higher than in fields using conventional practices; the increases ranged from 12 per cent in 1982 to 91 per cent in 1984.

• The A standard represented a transitional level between conventional and organic food, allowing restricted use of chemical fertilizers and pesticides, while AA represented full organic status.