The New Seeds, Chapter 2
Main Point
Throughout the modern history of agriculture, all of
the major breakthroughs in agricultural technology originated in the temperate
zones. Even though a great deal of
research has been devoted to plantation agriculture in the tropics, the prime
beneficiaries have been outsiders, those in the rich countries to whom the
commodities are sold.
Summary
Ideology
New seeds are the product of the first systematic
attempt to devise a technology that helps improve the lives of hundreds of
millions of people who live in material poverty.
The Engineering Problem
People in the tropics have been forced to make do
with an agricultural technology developed in northwestern Europe, the United
States or Japan. It is a technology that
is admirably adaptable to the temperate climates but usually poorly suited to
the tropics.
The challenge to the designers of the new seeds was
to develop cereal varieties that were not only responsive to fertilizer but
also adaptable throughout the poor regions of the world. If the poor countries have the advantage
of a great supply of solar energy, they have the disadvantage of a great
variation in soil conditions.
Problem
In the tropics traditional strains have to fight for
survival against weeds and in heavy rains and floods. This makes for a tall, thin-strewed plant that can keep its head
above water when there is flooding and can compete successfully with weeds for
its share of sunlight
Traditional strains are not responsive to
fertilizer; when it is applied liberally, they become top heavy with grain and
fall over, before the grain is ripe.
Solution
The Japanese isolated a dwarfing gene, which
produced a sturdy, short-strewed wheat capable of carrying a heavy head of
grain.
Dr. Orville Vogel incorporated the Japanese dwarf
gene into his own local breeding materials.
The resulting variety, called Gaines wheat, produced world-record yields
in the irrigated and high-rainfall growing conditions of the Pacific Northwest.
Dr. Norman Borlaugh, Director of the Rockefeller
Foundation’s wheat-breading program in Mexico, refined Gaines wheat to make it
more suitable for use in Mexico.
Dr. Borlaugh was able to produce a dwarf wheat
variety that was remarkably adapted to a range of growing conditions. Because of these amazing results, the Ford
and Rockefeller Foundations joined forces in 1962 to establish the
International Rice Research Institute on land provided by the Philippine
government at Los Banos, near Manila.
The result was IR-8, a crossbreeding of rice between
strains from Indonesia and Taiwan. When
properly managed, IR-8 has proved easily capable of doubling the yield of most
local rices in Asia. IR-8 is highly adaptable
and also matures very early.
Imports of seed rice from the Philippines
accelerated the diffusion of the high-yielding dwarf rice, such as the
IR-8. The area planted to high-yielding
cereals in Asia in the 1964-65 crop year was estimated at 200 acres, and that
largely for experimental and trial purpose.
By 1968-69, 34 million acres were covered.
Other Problems
At the present, less than one seventh of the wheat
and rice land in Asia is planted to the new seeds. Because this land is relatively well irrigated and fertile, it
produces a disproportionately large share of the region’s food. In Africa and Latin America the new seeds
are not being used so widely as in Asia.
Expansion of the area planted to high-yielding wheat
is already slowing somewhat in both India and Pakistan as the additional land
with suitable water supply diminishes.
Water supply and water control will act as the
principal constraints to further spread of high-yielding cereals in the poor
countries.
Summary by Luis Munoz