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Training for Grain Gain
One Malawian scientist takes home lessons
to benefit many.
“For countries like Malawi that suffer from
drought, harvests can change with things like zero-tillage,”
says Amos Ngwira, an agricultural scientist from Malawi and recent
participant in a CIMMYT course on conservation agriculture. Now
back in his homeland, Ngwira practices the techniques he learned,
such as zero-tillage and retained residues. The training course
came at a time when over 10 million people in southern Africa need
food aid, according to the UN’s World
Food Programme.

Trainees hard at work: Amos Ngwira handles
a two-wheel tractor, used for shaping permanent beds, with
help from fellow trainee Carlos Gonzalez Loeza, an agronomist
from Mexico. |
“This course was very helpful for me. We learned
how to plant directly into the soil without plowing, how to calibrate
machines for plants, and how to properly layout a plot,” Ngwira
says, from his base at the Chitedze Research Station in Lilongwe,
Malawi. Working on behalf of some of the world’s poorest farmers,
he is a source of knowledge on permanent raised beds, where plants
are grown on beds with furrows in between, and zero-tillage—conservation
agriculture technologies that can keep moisture in the soil and
increase yields. Maize, including CIMMYT maize bred for drought
tolerance, is grown on over 70% of land under cultivation in Malawi.
Seven farmers, seeing the results of a CIMMYT demonstration
plot, teamed up to try zero-tillage last year. Their success in
the face of the drought has inspired others. Now their group numbers
30. It is small, but it is a start. “Although we haven’t
convinced many yet, farmers are catching on to zero-tillage,”
says Ngwira, who has been working with a project funded by BMZ.
As farmer Kingsley Kamwendo told agronomists recently: “The
residues helped to conserve moisture, because other crops seeded
at the same time without residues died during the drought. I’ll
harvest nothing from my [conventionally tilled plot], but I’ll
get something from this one.” For most farmers in Malawi,
hopes for a good harvest were dashed by a prolonged dry spell at
the flowering stage, when the maize plant needs it the most.

With some farmers who are pioneering conservation agriculture
in Chisepo, central Malawi, Amos Ngwira (center) stands in
a field with raised beds, retained residues, and intercropped
maize and cowpeas. |
CIMMYT agronomist Ken Sayre, who led the course, thinks
that conservation agriculture can go far in country like Malawi:
“If we look 10 to 20 years down the road, there is a tremendous
possibility for appropriate small-scale technology to make a difference.
Machines like the two-wheel tractor, which has already revolutionized
agriculture in Bangladesh, could change the way Malawians grow maize—for
the better.”
For Ngwira, this course allowed him to share experiences
and learn about intercropping, crop rotations, and retained residues,
all of which play a part in conservation agriculture. A month long,
it included a balance of class and fieldwork, meeting with other
scientists, using the library, and collaborating with fellow students.
“I’ve been exposed to the life experiences of conservation
agriculture, and I am very happy to learn more,” says Ngwira.
Drought continues to plague southern Africa’s
food security. Before the 2006 harvest comes in, the World Food
Programme estimates that 4.2 million Malawians will need food aid.
By providing training courses for people like Ngwira, CIMMYT hopes
that more and more farmers will be able to make Malawi more food
secure.
Zero-tillage: What is it?
In zero-tillage, the farmer plants seed directly into the
soil without plowing, and the crop comes up amid stubble from
the previous year’s crop. In this way, the soil's natural
structure, network of organisms, water capture and retention
capacity, and other properties are conserved or improved.
Zero-tillage also saves time, fuel, and machinery maintenance
costs, and reduces greenhouse gas emissions, to mention a
few benefits.
To read another story about zero-tillage in this month's
E-news, click here
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For more information, contact Ken Sayre
(k.sayre@cgiar.org)
or Pat Wall (p.wall@cgiar.org).
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