Hi Abdul, I suppose there are many ways to disseminate this information, but the effectiveness of the method is going to depend largely on the demographic of the farming community. For example, young or more wealthy farmers are more likely to use the internet, so a cheap and effective method of introducing a new technology is going to be via the web on pages which attract the attention of farmers. e.g. seed or fertilizer sale sites. Those sites may have mailing lists that they could use to advertise directly to individuals via e-mail or regular mail. In those farming communities where this approach is not going to be effective, a more localised approach is required. This will be more labour intensive - perhaps creating flyers to advertise the technology at local markets where farmers sell their produce, for example. Ther are many other methods - such as targeted media advertising - but if you establish what the majority of farmers will respond to best, then you will have the most effective way of targeting your audience.
Any technology that gives sustainability in farming, is good, cheap and long lasting. Deriving the resources from the vicinity, selection of land (type) and going hand in hand with the nature is very important. Avoid bulls work (not ploughing, I mean exhaustive) and do targetted farming
there are many tools but i can prefer radio and television since radio can reach many people at the same time also Television since most young farmers watch Tv on their spare time.