Further to my earlier contribution and since I strongly believe that 'Nutrition education' does have an enormous potential to motivate producer communities to follow their low cost ecological agri systems thus ensuring their access to safe and improved diets and of the general public who consume their produce. Answers to your Qs:

Are you aware of programmes aiming to improve the dietary quality and diversity of farming families?

With the Govt of India deciding on funding, assisting and provide supporting to the whole of North East India for replicating the hill State of Sikkim’s successful model of converting to the producer oriented economies of scope low cost ecological/ organic agriculture system will ensure the producer communities access to safe, nutritious food and cash needs of the producer communities, the possibilities are huge if this experiment succeeds in all hill states of the world, especially as Bhutan as a country has decided to go organic by 2020.

How can ecological agri systems and nutrition education/ knowledge increase the demand for local family farming produce with high nutritional value?

The produce from organic agriculture ensures access to the farmer families at little or no cost, is tasty and safe, thus ensures good health (little or no medical cost), thus will increase demand among producer communities and markets in the vicinity whilst reducing the effects of climate change.