Alternating current. In alternating current the movement (or flow) of electric charge periodically reverses direction. An electric charge would for instance move forward, then backward, then forward, then backward, over and over again.
Pesticides: The biologically active portion of a pesticide present in a formulation.
American Association for the Advancement of Science.
Association for the Advancement of Agricultural Sciences in Africa.
Association of Applied Biologists, UK.
Agriculture and Agri-Food Canada, Ottawa, Ontario K1A 0C5, Canada
All African Farmers' Union.
Australian Agricultural Health and Quarantine Service (Australia).
Agency for Agricultural Research and Development, 29 Jalan Ragunan, Pasar Minggu, Jakarta, Indonesia.