• An analysis of the chart shows that close to 60 percent and 67 percent of the respondents, respectively, had reduced their rates of nitrogen fertilizer and herbicide inputs over the last three years.

• Our research indicates that extension agents in the Khorasan Province perceive sustainable agriculture to mean lower chemical inputs, environmental and natural resource protection, an effective and efficient agricultural production system, and reliance on organic matter.

• This complete system allows sustainable production with only low fertiliser input.

• The following indicators were developed to evaluate the management of nutrient and pesticide inputs on farms.

• Some examples quoted are that seed-bed preparation and subsequent weed control comprise 56?74% of the total labour input in small farms in Nigeria, 16?40% for maize in Africa and 57% for cotton in the Gambia.

• The Department's scientists work on enhancing air quality by reducing undesirable agricultural inputs into the atmosphere.