Title: TropSoils : : from the ground up.
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00080628/00001
 Material Information
Title: TropSoils : : from the ground up.
Physical Description: 1 folded sheet, 6 p. : col. ill. ; 22 cm.
Language: English
Creator: Soil Management Collaborative Research Support Program.
Publisher: TropSoils, North Carolina State University,
Publication Date: 198-?
Subject: Soil Management Collaborative Research Support Program.
Soil management -- Research.
Soil management -- Tropics.
Agriculture -- Technology transfer.
Abstract: Describes TropSoils, a collaborative research support program that links the research institutions of developing nations, the U.S. Agency for International Development, international research centers and U.S. universities.
 Record Information
Bibliographic ID: UF00080628
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 153258111

Full Text


From the
Ground Up

The Problem
The problem is basic as earth. In the next generation,the
world's developing nations will need better yields from
their present farms plus millions of hectares of new crop-
land to produce their food, fuel and fibre. Most of these
new lands will be found in the tropics, where the need and
potential for agricultural growth are greatest.
But to put these tropical lands into production-and at
the same time conserve them as a resource for future gen-
erations-means solving some difficult problems related
to soil.The soils are frequently acid, infertile, erodable or
dry. Without proper soil management, agriculture fre-
quently fails here.

TropSoils is one of the Collaborative Research Support
Programs (CRSPs) created to implement Title XII of the
United States Foreign Assistance Act.Title XII, which
seeks to "prevent famine and establish freedom from hun-
ger," recognized the role of U.S. land grant universities in
the evolution of modern agriculture. It provides for a new
partnership in which universities join government in an
effort to help developing nations develop their agriculture
and securetheirfood supply

TropSoils' international collaboration links the research
institutions of developing nations,the U.S. Agency for In-
ternational Development, international research centers
and U.S. universities.The collaboration ensures that part-
ner nations have a stake inTropSoils research,that it meets
their needs,and that the program draws on the broadest
possible base of knowledge and expertise.

acid savannas
The Goal
TropSoils' goal is to develop and adopt soil-management
technology that will reduce constraints to plant growth,
and to ensure that this technology is agronomically, eco-
nomically and ecologically sound for developing coun-
tries in the tropics. Because it has been impractical to do
this in every tropical nation or region at once, the program
has sought to situate and develop its research projects in
a way that would make their results applicable over broad
areas having similar soils and environments.

sWil-arItU truprZs

Agro-Ecological Zones
These areas, or "agro-ecological zones,"have become the
basic units of TropSoils'organization. Each participating
university has taken a lead role in one of these zones:
The humid tropics, where the dry season is no more than
three months, the native vegetation is rain forest, and soil
acidity and infertility are common constraints to crop pro-
duction, are so vast in area and potential that they are as-
signed two primary research sites, each with its own lead
university. North Carolina State University leadsTrop-
Soils research in Peru, building on work begun there in
thel950s,and hasdeveloped a primary siteatYurimaguas.
The University of Hawaii has established a new program
based in the Sitiung transmigration settlements of West
Sumatra, Indonesia.
Texas A&M,beginning at sites in Niger and Mali,leadsTrop-
Soils'work in thesemi-arid tropics, where a dry season of
six to nine months, wind and water erosion, desertification
and nutrient deficiencies create serious constraints.
Basing its research in the Cerrado of Brazil,Cornell Uni-
versity leadsTropSoils'program in the acid savannas, a
zone characterized by a dry season of four to six months,
savanna vegetation, and soils that are commonly acid and
low in nutrients, but physically favorable to cultivation.
Several of these universities conduct research in a zone
that overlaps the others-the steeplands, where the ter-
rain makes erosion a serious environmental and agro-

TropSoils'approach to work in these zones is based on
several fundamental assumptions. The research should
employ established principles of soil and crop science,
and adapt them to conditions in the agro-ecological zone.
In some cases, basic research should be conducted to fill
gaps in current knowledge.The soil-management tech-
nology packages generated through research should be
flexible enough to accommodate both the user and the
resource, and should be transferrable to other sites.

humid tropics
TropSoils was formally initiated in September, 1981, after
two years of planning.With research under way at all of its
primary sites, TropSoils scientists have already achieved
some important results in a number of the key soil-man-
agement areas the program addresses, including
the continuous cultivation of food crops in the
humid tropics
low-cost, "low-input" methods of soil and
crop management
soil characterization
soil variability and acidity management
nitrogen management
soil-fertility management
soil-water management
land reclamation and conservation
improved pastures
paddy-rice production
farming systems and socio-economics

For Students
TropSoils offers a number of opportunities for qualified
graduate students, including both short-term and long-
term research assignments on-site in the collaborating
countries. For more information, contact the program
coordinator at the school of your choice.

Program Coordinators
Dr. Goro Uehara
Dept. of Agronomy & Soil Science
University of Hawaii
Honolulu, HI 98622
Dr. Pedro Sanchez
Soil Science Department
Box 7619, NC State University
Raleigh, NC 27650-7619
Dr. Frank G. Calhoun
Dept. of Soil and Crop Science
Texas A&M University
College Station, TX 77843
Dr. Douglas Lathwell
Department of Agronomy
Cornell University
Ithaca, NY14853

TropSoils'formal collaborators are:
Agency for International Development-USA
Center for Soils Research-Indonesia
Cornell University-USA
Empresa Brasileira de Pesquisa Agropecuaria-Brazil
Iristitut National de Recherches
Agronomiques du Niger-Niger
Institute d'Economie Rural-Mali
Institute Nacional de Investigacion y
Promocion Agraria-Peru
International Crops Research Institute for the
Semi-Arid Tropics-india
North Carolina State University-USA
Texas A&M University-USA
University of Hawaii-USA
For more information write
Box 7113,Williams Hall
North Carolina State University
Raleigh, North Carolina 27695-7113


Box 7113, Williams Hall
North Carolina State University
Raleigh, North Carolina 27695-7113

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