Drought is described as a very important environmental constraint, limiting plant growth and food production. The World Food Program (WFP) has recently indicated drought in Australia as one of the major factors for the difficulty to deliver food aid to millions of people suffering from hunger and malnutrition. Drought is seen as the force driving up wheat and rice prices, which contributes directly to food shortage, social unrest and disturbances at the global level. Therefore, mitigating drought and limiting water consumption seems to be essential factors for resolving the actual food crisis and to find long-term solutions to malnutrition, hunger and famine, particularly in the drylands.
Application of water stocking soil conditioners, keeping the soil moistened with a minimum of irrigation water, and seeding or planting more drought tolerant species and varieties will definitely contribute to solve the food crisis. Scientists in China and the USA have recently discovered important genetic information about drought tolerance of plants. It was thereby shown that drought tolerant mutants of Arabidopsis thaliana have a more extensive root system than the wild types, with deeper roots and more lateral roots, and show a reduced leaf stomatal density. My own research work on the soil conditioning compound TerraCottem has led to similar conclusions : treatment with this soil conditioner induced enhancement of the root system with a higher number of lateral roots. More roots means more root tips and thus a higher number of water absorbing root hairs, sitting close to the root meristem. As a result, plants with more roots can better explore the soil and find the smallest water quantities in a relatively dry soil.
As the world’s population is growing by about 78 million people a year, it affects life on this earth in a very dramatic way. Droughts have caused a rise of food prices many times before, but the present situation is quite different, because it is based on specific trends and facts : the faster growing world population and a definite change in international food consumption trends and habits.
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[editor’s note, by Migeru]
Some experts claim that “major investments to boost world food output will keep shortages down to the malnutrition level in some of the world’s poorer nations”, and that “improving farm infrastructure and technological boosts to farm yields can create a lot of small green revolutions, particularly in Africa”.
It seems quite difficult to believe that “major investments to boost the food output” will be able to “keep the food shortages down to the malnutrition level”, wherever in this world. Indeed, the world’s most famous research institutes have already developed very effective technologies to boost food production in the most adverse conditions of serious drought and salinity. Yet, not one single organization has ever decided, up to now, to use “major investments” to apply such technologies in large-scale programs, which would most certainly change the food situation in the world’s poorest nations.
It seems also difficult to believe that “improving farm infrastructure and technological boosts to farm yields” will be able to create “small green revolutions, particularly in Africa”. It is not by improving a farm’s infrastructure that one will manage drought. Although a number of technological solutions to boost farm yields have already been developed, only those tackling the drought problems are an option to create significant changes.
I do not believe that such changes can be realized at the level of large-scale farms. On the contrary, I am convinced that application of cost-effective, soil conditioning methods to enhance the water retention capacity of the soil and to boost biomass production in the drylands, is the best solution to help the poor rural people to avoid malnutrition and hunger, giving them a “fresh” start with a daily portion of “fresh vegetables”. These rural people, forming the group most affected by the food crisis, do not need to play a role in boosting the world’s food production. They simply need to produce enough food for their own family (“to fill their own hungry stomach”). Application of cost-effective technologies should therefore be programmed at the level of small-scale “family gardens” or “school gardens” and not at the scale of huge (industrial) farms, where return on investment is always the key factor for survival of the business.
Preferentially, major investments to boost the food output in the drylands should be employed to improve food production in family gardens and school gardens, in order to offer all rural people an opportunity to produce more and better food, vegetables and fruits, full of vitamins and mineral elements, mostly for their own family members or kids, partly for the local market.
Splendid examples of long-term combating food shortage with family gardens can be seen since 2006 in the refugee camps in S.W. Algeria (UNICEF project). One can only hope that such a success story will soon be duplicated in many similar situations, where hungry people wait for similar innovative and well-conceived practices, with a remarkable return on investment, laying solid foundations for further sustainable development.
Recently, a number of initiatives have been taken to enhance urban gardening space, not only with allotment gardens, but also with “guerilla gardening” and transformation of open, underused spaces into small-scale garden plots for downtown dwellers, apartment dwellers and even for university students like those at the McGill University in Montreal. Many poor urban people are very keen on harvesting their own crops in such small gardens or applying container gardening on balconies, terraces, rooftops or other unused open spaces. Support for urban agriculture or urban gardening can be seen as a priority for decision-makers to reverse the world’s food crisis.
Food aid, be it with billions of dollars, can only be very effective if priority is given to local food production for the poor rural or urban people, who can not afford to buy the expensive commercial food products in shops or supermarkets. Small-scale family gardens, school gardens, allotment gardens and urban gardens in unused open spaces should be our strategic counter-attack against the actual food crisis.
Article published in European Tribune
CONTAINER GARDENING 
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