§ Dr. Roger Thomasasked the Minister of Agriculture, Fisheries and Food what are the active ingredients in the herbicide 711W formulations used by the Forestry Commission ; and what tonnage of individual active ingredients was applied to Forestry Commission land during 1978 and 1979.
§ Mr. WigginThe following figures show the quantities of active ingredient in the herbicides used by the Forestry Commission in the last two years.
Active ingredient Common chemical name Amount (tonees) Year ended 30 September (BS 1831) 1978 1979 Ammonium sulphamate 1.1 1.4 Asulam 2.3 1.9 Atrazine 1.7 1.8 Chlorthiamid 1.1 0.4 Dalapon 0.5 0.1 2,4-D 8.3 7.8 Dichlobenil 0.6 1.3 Dichlobenil/Dalapon 0.5 0.8 Glyphosate 0.4 1.3 Paraquat 0.6 0.8 Propvzamide 4.5 3.5 2,4,5-T 1.6 1.3 Diphenamid 0.1 0.1 Nitrofen 0.1 Nil Simazine 0.3 0.2
§ Dr. Roger Thomasasked the Minister of Agriculture, Fisheries and Food what is the permitted level of 2, 3, 7, 8-tetra-chlorodibenzo-p-dioxin impurity in the bactericide hexachlorophene.
§ Dr. VaughanI have been asked to reply.
A limit of 15 parts per thousand million is applied for its presence in hexachlorophene in human medicinal products.