I am glad that you chose the article on "Pushing up Farm Productivity" to share with us. It looks as if several group interests are overlapping around the topic of food production, and eco-friendly solutions.
I am very aware of approaches to food production and methods of growing things at present because Marcus Simmons is still sharing details of his recent trip to Africa. He was in Benin and Nigeria - and the main focus of his trip was permaculture. He went to Benin to learn more about permaculture as applied in West Africa, then went to share those ideas at Fantsuam and Attachab Eco-Villlage.
I particularly like the bit in the article "Pushing up Farm Productivity" that said "It is not the farmer who makes the food: he is only a facilitator. Food is actually made by plants. Therefore it is important to understand the requirements of plants and supply them without restrictions in order for plants to deliver food. Since plants do not talk, their needs are understood through research and experimentation."
There is a difference in emphasis between the approach in the article and a permaculture approach, as the article seems to refer to artificial fertilisers, and permaculture favours natural fertilisers and composting - but there is a shared concern to be more aware of the needs of the plants.
You may be interested in this presentation about permaculture, (and how it compares with other methods) which Marcus prepared for sharing with people at Fantsuam.
I know that some of our friends at First Thursday are concerned with food production, so I have decided to focus on permaculture and related topics at First Thursdays for a while. I hope you will be able to join us there again sometimes.