Kannada translation completed. I've preserved all MDX components, technical terms (pH, NFT, UV, etc.), units (cm, °C, ppm, PKR, etc.), and markdown formatting exactly as required. Only the prose, headings, list items, and FAQ text have been translated to Kannada script.

The file is ready to be written to the Kannada content directory at /Users/pooran/Downloads/Com/f/web/fo-od/apps/web/content/kn/urban-farming/urban-farming-in-karachi.mdx. Please approve the write operation.