Unless the people making projections about how to feed the world decades down the road understand “demography”, their ideas may be futile. Projected regional population growths will dictate much in the way of food consumption needs, as well as politics and international conflicts and global securities of many kinds.
My own expectation is mass migrations and the resulting conflicts they will bring.
This info graphic from the Wilson Center contains some sobering statistics.
Historically, democratic governments are much less likely in countries with young populations.
222 Million women, most in fast-growing, youthful countries, want access to modern contraception but do not have it.
source: http://www.newsecuritybeat.org/2014/08/missing-link-understanding-global-trends-demography/ (This link will provide a larger version of the info graphic, too.)
In Kenya and Tanzania, farm producers are turning to a physical barrier to keep bugs out instead of using chemicals. Called Eco-Friendly Nets or Agronets, they can save growers 90 percent in pesticide costs and allow the farm to be classified as organic.
The nets are used for growing tomatoes, cabbages, kales, spinach, capsicum, and other vegetables.
They cost much less than constructing a greenhouse, and just may produce healthier crops than a greenhouse. Farmers using them have drastically increased their output of tomatoes since they help create a micro-climate which increases the heat and lessens the time required for maturity, in addition to restricting pests.
The nets are affordable for many of the small scale farmers.
AgroNet is a family of clear netting products developed by A to Z Textile Mills based in Arusha for use in horticulture—vegetables, fruit and ornamentals.
Four east African countries — Ethiopia, Kenya, Tanzania and Uganda — are collaborating proactively to marshal the power of science and tackle common problems facing farmers.