With water security, food security public health and general ecological sustainability in agriculture all being so closely linked, the importance of overhauling and systematically improving the way we grow our food cannot be overstated. The following are some of the vital innovations that have entered the global agricultural industry, generally on a small but noticeable scale, and may yet pave the way to sustainable farming worldwide.
Soil revivification/reversing desertification: Desertification is caused by the over-use of the land’s resources by humans, usually for agriculture, as well as climatic variations. Fortunately, it is a reversible process, with new techniques emerging across the world. Current projects being undertaken by ICARDA in the Arabian Peninsula include the use of reseeding indigenous range species combined with various water harvesting techniques, alongside controlled grazing. As plant cover grows, the regeneration of the land accelerates, slowing or even reversing the process of desertification.
Draught-resistant seeds: Farming drought-resistant crops is a CSA (Climate-smart Agriculture) method that is gaining ground in regions of the world that are vulnerable to rainfall shortages and a general lack of access to advanced irrigation infrastructure. Zambia is currently undergoing a shift towards the adoption of drought-resistant maize after new studies estimate its usage could increase yields by 38% and reduce the risks of crop failure by 36%.
Vertical farming: Though a relative newcomer, the growth of vertical farming is predicted to be explosive, with an estimated growth of the global market from $3 billion in 2018 to $22 billion by 2026. The principle attraction of vertical farming is that it uses only a tiny fraction of the water taken up by conventional agricultural methods. Using the latest methods, a kilogram of vegetables grown on a vertical farm will use between 2-4 litres of water, compared to 60 litres if grown on an average field.
Zero waste farming concepts: Much like the ‘smart city concept’, zero waste farming has a lot of different interpretations and definitions depending on who you ask. However, at its core is the idea of farming in a way that mimics natural ecosystems, creating regenerative loops where waste from one area produces feed, fuel or nutrients for another. For example, excreted waste from livestock provides fertiliser for crops – nothing is wasted and no chemicals (pesticides, herbicides, etc) are added. Today, a leading proponent of zero waste farming, Godfrey Nzamujo, Founder and Director of Songhai, has grown his model from an acre of land in Benin, Africa, to a programme of education and employment that has trained over 7,000 farmer-entrepreneurs and more than 30,000 people across the continent in total.