This is a big scope question. But, the compehensive approach accompanied with farmer participation may be the best direction to make a change

Dear Mr. Falsafi,

Agricultural extension services must play a great role in order to diseminate the tehcnical knowledge needed to agricultural systems that allow achieving food security. Moreover, their close relationship with stakeholders make them the link to increase awareness.

Regards,

Alfredo J. Escribano.

The most important aspect of linking agricultural extension to food security is to recognize the need of sustainable agricultural methods for local farmers. If local people - and ultimately countires on a national level - are to achieve food security, they need to be resilient towards climate change and environmental hazards and be less dependent on globalized markets. Sustainable agricultural methods include agroforestry which also reduces a farmers dependence on artificial inputs and thus they are less (but naturally not completely) vulnerable to market changes etc. I've researched a local NGO in Tanzania which worked with agricultural extension services, they provided very important agricultural knowledge to local farmers. Apart from teaching about agroforestry, they also disseminate knowledge about gender equality and entrepreneurship. Entrepreneurship is a tool for diversification which also makes local farmers more resilient towards change and can help increase their income and thus make them more food secure. The gender equality issue highlighted local farmers problem of not allocating time and work equally between the man and the woman - the woman usually work more - and consequently they were not as efficient on their farm as they had the potential to be. This is just a brief answer, I hope it provided you with some interesting input. 

Dear Hanna

Thank you very much because of your deep and wide guide in a short writing opportunity. I would like to have your research results and findings in Tanzania. If i may how can i down loud a fulltext or abstract of you work. Thank you again and all the best. 

Yours Sincerely

Peyman

Dear Dr Falsafi,

Great Idea! But let me add some ideas. When we define food security in terms of food supply, we may ignore the demand side of the concept. Agriculture extension has a critical role in tackling food insecurity, but should be considered along with the affordibility of the food and "entitlement". Meanwhile, this food has to provide enough nutrients (vitamins and minerals) in order to materialize nutrition security.  

There are some techniques like "linear programing" which may help you to design a model, considering several factors influencing food and nutrition security like environmental concerns, cost of production, total calorie supply, food price and nutrient content of the food (considering main population needs and deficiencies). I recommend you to read "Food Security, Poverty and Nutrition Policy Analysis" by Suresh Babu, chapter 15: "Achieving an ideal diet modeling with linear programing" to get more information about this statistical technique.

 Wish you all the best,

Ali Milani

Dear Dr. Milani

Salam

Thank you very much because of your very valuable contribution. I will consider your ideas and sugestion. 

With the best wishes

Sincerely

Peyman Falsafi

Dear Falsafi,

That is a great idea. In principle the agricultural extension agency responsible for agricultural extension services must develop and implement policies which facilitate the smooth transfer of agricultural information and technology to farmers. Unfortunately, the priority is very often given to science based approaches and there is little emphasis on the appropriate institutional frame work which can facilitate the transfer of information and new technology to farmers. The institutions includes the norms and values for the officials involved in the transfer of knowledge and the farmers themselves. My opinion is that whether it is national or local level, these institutions must be reformed for proper delivery of services which can improve food security