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Report
Wheat and wheat breeding in China
(CIMMYT, 1991)
The People's Republic of China, which has the world's largest population (1990 estimate of 1.1 billion), is also the world's largest wheat producer with the crop being grown in 29 of its 30 provinces. As expounded upon in ...
Book
CIMMYT 1990-1991 hechos y tendencias mundiales relacionados con el trigo: la producción de trigo y cebada en ambientes marginales de temporal del mundo en desarrollo
(CIMMYT, 1991)
A synopsis of recent trends in rainfed marginal environments of the developing world is followed by a description of the major wheat and barley farming systems in West Asia North Africa (WANA) and South Asia (the role of ...
Handbook
Carencias y toxicidades nutricionales que afectan al trigo: Una guia para su identificacion en el campo
(CIMMYT, 1991)
Se puede mejorar el empleo de los síntomas visibles para identificar las carencias y toxicidades por nutrimentos en las plantas mediante la observación y descripción cuidadosas de esos síntomas. En esta guía se intenta ...
Article
Extent and causes of low yield in maize planted late by smallholder farmers in sub-humid areas of Zimbabwe
(CIMMYT, 1991)
Diagnostic work was undertaken during 1987-91 to determine the area of maize planted late by smallholder farmers in sub-humid (Natural Regions 2 and 3) communal areas of Zimbabwe, the grain yield losses encountered, and ...
Research Report
Results of CIMMYT'S regional maize agronomy trial network across Central America and the Caribbean
(CIMMYT, 1991)
CIMMYT's collaborative Agronomic research in Central America and the Caribbean began in 1988 with the initiation of a series of similar trials across the region. Three types of trials were established: interseeding of ...
Annual Report
CIMMYT 1990 Annual Report: sustaining agricultural resources in developing countries: contributions of CIMMYT research
(CIMMYT, 1991)
In this century, agricultural productivity in many developing contries increased dramatically, spurring economic growth and improving the well-being of hundreds of millions of the world's poor. As the next millennium ...
Book
Modeling the aggregate effects of technological change on income distribution in Pakistan's favored and marginal production environments
(CIMMYT, 1991)
This study investigates the impact on interregional income distribution of the diffusion of improved technologies for wheat production in Pakistan. A multimarket model is developed that captures both direct productivity ...
Book
Economic criteria for establishing plant breeding programs
(CIMMYT, 1991)
A general model of annual costs and lagged annual returns from a plant breeding program is developed to estimate the threshold sizes of a crop industry at which different breeding programs could be economically justified, ...
Article
Pathogenicity variations of Puccinia recondita f. sp. tritici and P. graminis f. sp. tritici in wheat growing areas of Mexico during 1988 and 1989
(American Phytopathological Society (APS), 1991)
A survey of Puccinia recondita f. sp. tritici in Mexico during 1988 and 1989 indicated the presence of 23 pathotypes. In the Pacific region and Highland Plateau, pathotype TCB/TD predominated both years, followed by TBD/TM. ...
Book
Nutrient deficiencies and toxicities in wheat: a guide for field identification
(CIMMYT, 1991)
The use of visual symptoms to identify nutrient deficiencies and toxicities in plants can be improved by both their careful observation and description. This guide attempts to accurately describe symptoms of nutrient ...