And they become like nutrient pumps.

Simply flooding markets with cheap high calorie, low nutrient grains will never solve chronic malnutrition.

One study found, for example, that adding moringa to porridge may help malnourished children gain weight and recover from nutrient deficiencies more quickly.

Moreover, pigs and poultry are ideal food waste processors, and their effluents can serve again as nutrient and energy sources, turning future food chains into interconnected production cycles.

Moringa s high nutrient content raises questions about whether it should be used as a main source of food for the families growing it rather than as an export.

Extending the fruiting period of squash is also easy cut off the old leaves, water it with warm water and a multinutrient fertiliser solution, and add some nutrient rich soil under the bush.

Low oxygen levels in rivers and the vast Gulf of Mexico dead zone at the end of the Mississippi Delta are both results of high nutrient concentrations in the Missouri and other tributaries of the Mississippi.

According to a recent British meta analysis, ammonia emissions, nitrogen leaching, and nitrous oxide emissions per unit of output were higher in organic systems than in conventional agriculture, as were land use and the potential for eutrophication adverse ecosystem responses to the addition of fertilizers and wastes and acidification.

Simply flooding markets with cheap high calorie, low nutrient grains will never solve chronic malnutrition. A change of mindset among development partners is required, along with long term commitments to building sustainable, diversified, and equitably distributed systems of food production and distribution.

And the way it works is that there's a pump at the bottom, which periodically sends some of this liquid nutrient solution up to the top, which then trickles down through plants' root systems that are suspended in clay pellets so there's no dirt involved.