What is the minimum health distance between urban area and agricultural area with application and use of pesticides? Is there a worldwide normative (WHO)? Or in the legislation your country?
I do not think that this aspect is important if compared with industrial areas and airports.
I see that you have raised a very valid question. As of now, in most countries there is no such norm, as the risks have been seen as minimal.
This discussion that I raise is specifically for a rurally crowded area where today there are 150 families surrounded by agrochemical-intensive soybean plantations. In this location airports and industries of any size are missing. There is only one airport within 1000 km. No industry. The area is inserted in the Legal Amazon. I will try to place an illustrated image to assist in the discussion.
Green Polygons: Agrochemical intensive soybean agriculture;
Red Polygons: Urban area;
Arrows: Indicate the preferred quadrant of winds.
Image source: GEpro
Vector edit: Inkscape 0.92.3 (2405546, 2018-03-11)
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