A report published last month by the Montpellier Panel – an eminent
group of agriculture, ecology and trade experts from Africa and Europe –
says about 65 percent of Africa’s arable land is too damaged to sustain
viable food production.
The report, “No Ordinary Matter: conserving, restoring and enhancing Africa’s soil“, notes that Africa suffers from the triple threat of land degradation, poor yields and a growing population.
The Montpellier Panel has recommended, among others, that African
governments and donors invest in land and soil management, and create
incentives particularly on secure land rights to encourage the care and
adequate management of farm land. In addition, the report recommends
increasing financial support for investment on sustainable land
management.
The publication of the report comes with the U.N.
declaration of 2015 as the International Year of Soils, a declaration
the Food and Agriculture Organisation (FAO) director general, Jose
Graziano da Silva, said was important for “paving the road towards a
real sustainable development for all and by all.”
According to the
FAO, human pressure on the resource has left a third of all soils on
which food production depends degraded worldwide.
Without new approaches to better managing soil health, the amount of arable and productive land available per person in 2050 will be a
fourth of the level it was in 1960 as the FAO says it can take up to
1,000 years to form a centimetre of soil.
Soil expert and
professor of agriculture at the Makerere University, Moses Tenywa tells
IPS that African governments should do more to promote soil and water
conservation, which is costly for farmers in terms of resources, labour,
finances and inputs.
“Practicing climate smart agriculture in climate watersheds
promotes soil health. This includes conservation agriculture,
agro-forestry, diversification, mulching, and use of fertilizers in
combination with rainwater harvesting.”
According
to the Montpellier Panel report, an estimated 180 million people in
Sub-Saharan Africa are affected by land degradation, which costs about
68 billion dollars in economic losses as a result of damaged soils that
prevent crop yields.
“The burdens caused by Africa’s damaged soils are disproportionately
carried by the continent’s resource-poor farmers,” says the chair of the
Montpellier Panel, Professor Sir Gordon Conway.
“Problems such as
fragile land security and limited access to financial resources prompt
these farmers to forgo better land management practices that would lead
to long-term gains for soil health on the continent, in favour of more
affordable or less labour-intensive uses of resources which inevitably
exacerbate the issue.”
Soil health is critical to enhancing the
productivity of Africa’s agriculture, a major source of employment and a
huge contributor to GDP, says development expert and acting divisional
manager in charge of Visioning & Knowledge management at the Forum for Agricultural Research in Africa (FARA), Wole Fatunbi.
Fatunbi cites the land
terrace system to manage soil erosion in the highlands of Uganda and
Rwanda as a success story that made an impact because the systems were
backed legislation. Also, the use of organic manure in the Savannah
region through an agriculture system integrating livestock and crops has
become a model for farmers to protect and promote soil health.
Meanwhile, a new report by U.S. researchers cites global warming as another impact on soil with devastating consequences.
According
to the report “Climate Change and Security in Africa”, the continent is
expected to see a rise in average temperature that will be higher than
the global average. Annual rainfall is projected to decrease throughout
most of the region, with a possible exception of eastern Africa.
“Less
rain will have serious implications for sub-Saharan agriculture, 75
percent of which is rain-fed… Average predicated production losses by
2050 for African crops are: maize 22 percent, sorghum 17 percent, millet
17 percent, groundnut 18 percent, and cassava 8 percent.
“Hence,
in the absence of major interventions in capacity enhancements and
adaption measures, warming by as little as 1.5C threatens food
production in Africa significantly.”
A truly disturbing picture of the problems of soil was painted by the National Geographic magazine in a recent edition.
“By
1991, an area bigger than the United States and Canada combined was
lost to soil erosion—and it shows no signs of stopping,” wrote
agroecologist Jerry Glover in the article “Our Good Earth.” In fact,
says Glover, “native forests and vegetation are being cleared and
converted to agricultural land at a rate greater than any other period
in history.
“We still continue to harvest more nutrients than we
replace in soil,” he says. If a country is extracting oil, people worry
about what will happen if the oil runs out. But they don’t seem to worry
about what will happen if we run out of soil.
Adds Rattan Lal,
soil scientist: “Political stability, environmental quality, hunger, and
poverty all have the same root. In the long run, the solution to each
is restoring the most basic of all resources, the soil.”
from here
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