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Characterization of maize producing households in Zimbabwe Characterization of maize producing households in Zimbabwe

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Date added: 11/11/2010
Date modified: 11/15/2010
Filesize: 430.31 kB
Downloads: 8113
This report presents the findings of the household survey, provding insight into the characteristics of maize producing households in the Masvingo and Bikita districts of Zimbabwe.

Characterization of Maize Production in Southern Africa: Synthesis of CIMMYT/ DTMA Household Level Farming System Surveys in Angola, Malawi, Mozambique, Zambia and Zimbabwe Characterization of Maize Production in Southern Africa: Synthesis of CIMMYT/ DTMA Household Level Farming System Surveys in Angola, Malawi, Mozambique, Zambia and Zimbabwe

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Date added: 09/18/2012
Date modified: 09/18/2012
Filesize: 1.53 MB
Downloads: 7960

This report presents the synthesis of household level surveys in five intervention countries (Angola, Malawi, Mozambique, Zambia, and Zimbabwe) of the Drought Tolerant Maize for Africa (DTMA) project designed and implemented by the International Maize and Wheat Improvement Center (CIMMYT), International Institute for Tropical Agriculture (IITA) and national research and extension institutions in 13 countries of Sub-Saharan Africa (SSA). In each of the study countries, two districts were randomly selected provided that the districts fall in predetermined categories (20-40%) of probability of failed season (PFS). A total sample of 1108 households was randomly drawn with sample sizes varying country to country. The report has different sections that focus, in order, on description of the sample households, extent and determinants of poverty and inequality among the sample population, characteristics of maize production, perception and management of drought risk, and determinants of likelihood and intensity of adoption of improved maize varieties.

Choosing the right OPV for southern Africa Choosing the right OPV for southern Africa

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Date added: 10/06/2010
Date modified: 10/06/2010
Filesize: 518.57 kB
Downloads: 7784
This brochure gives a step-by-step account of how to choose an open-pollinated maize variety for southern Africa.

Characterization of Maize Producing Households in Manyoni and Chamwino Districts in Tanzania Characterization of Maize Producing Households in Manyoni and Chamwino Districts in Tanzania

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Date added: 02/20/2012
Date modified: 02/20/2012
Filesize: 237.9 kB
Downloads: 7536

The main goal of this study is to characterize maize production, consumption and marketing systems at the household level and to analyze determinants and impacts of past adoption of improved maize varieties and the potential adoption of drought tolerant maize in selected locations. Specific objectives are to:

  • Identify farm level constraints hindering access to and uptake of technology.
  • Identify farmers’ perceptions of and preferences for maize variety attributes in relation to drought (e.g., yield increments; food security; reduction in hunger months and cash income).
  • Characterize maize production practices, farmer access to farm inputs, produce markets, extension, credit, NGOs services and gender mainstreaming.
  • Characterize household livelihood strategies, their perception of risks and threats, and coping strategies.

Conduct and Management of Field Trials Conduct and Management of Field Trials

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Date added: 12/05/2012
Date modified: 12/05/2012
Filesize: 602.23 kB
Downloads: 7214

Field trials are very important in maize research. In particular, breeders conduct different types of fi eld trials
in the process of developing new varieties. Each type of trial has its peculiarities. Apart from those conducted
by the individual breeders in their research programs, there are collaborative trials conducted nationally or
internationally. Annually, national collaborative trials are constituted from candidate varieties submitted by
participating researchers in a country. Similarly, IITA coordinates international trials from candidate varieties
developed by IITA’s scientists and their national counterparts in the countries of WCA. Data obtained from
fi eld trials are intended for use in arriving at decisions on the varieties to release, the agronomic practices to
recommend, and the disease, insect, or weed control measures to adopt. Therefore, a certain measure
of uniformity of execution that would minimize spurious results is expected in national and regional
collaborative trials.
The experience of maize researchers accumulated over several decades in the subregion has clearly indicated
the need for training researchers and technicians in the conduct and management of maize fi eld trials. The data
recovery rate from national and particularly from international (regional) trials has never been 100% in WCA.
Very often, data returned to trial coordinators are not analyzable and are, therefore, not usable. Sometimes, the
coeffi cients of variation (CV) associated with measured traits are too large, thus rendering such data unusable.
Researchers defi ne certain traits differently. An example is plant height. Some researchers defi ne it as the
distance from the soil surface to the node bearing the fl ag leaf (topmost leaf); some others defi ne it as the
distance from the soil surface to the height of the central tassel branch.
The purpose of this book is to correct these anomalies as far as possible. The materials were carefully thought
out and are presented in a logical sequence by the authors. The contents have been used in several training
courses and refi ned over time. Starting with the purpose and types of maize variety trials, the authors follow
with an exhaustive description of designing, laying out, and conducting maize variety trials. Sources of spurious
data in maize research include the timing and rate of application of agronomic practices, data collection,
harvesting, and preparation of data for analysis. The authors focus attention on these areas in four different
sections. Examples, illustrations, practice problems, materials needed for fi eld work, and revision questions
are given in the annexes. Students, technicians, as well as research scientists will fi nd this book an invaluable
companion in the execution of their research work.

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