For instance during the 1980s, 1000-3000, grams of active ingredients like Carbomates and Organophosphates of very high toxicity were used in a hectare of land. In the early 1990s, the dosage levels came down to 100 - 750 grams per hectare of high toxic chemicals like synthetic Pyrethroids and Cartaps. By the late 1900s to early 2000, the dosages had further come down to 100 – 500 grams of moderate toxic chemicals like Neonicotonoids and Triazoles. From mid-2000 to the present, the dosages have come down to less than 100 grams per hectare of less toxic chemicals like Strobilurins, Diamides, Sulfonyls and Urea.