The factors influencing the size and shape of exptl. field plots (area of exptl. lot, soil types, trial objective, no. of replicates, and degree of accuracy and homogeneity of the exptl. material) for the execution of field expt. are discussed. The basic principles of the following different methods to determine plot size are described: max. curve method, method of Koch and Rigney, Hatheway's method, and the max. curve method using the multiple linear regression model. Some considerations are presented on the border effect and on plot size in bush and climbing bean trials.
Résultats de la recherche
Showing items 1 through 9 of 23.-
Library ResourceArticles et Livresdécembre, 1985Colombie, Amérique centrale, Amérique du Sud
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Library ResourceRapports et recherchesdécembre, 1985Éthiopie, Afrique, Afrique orientale
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Library ResourceArticles et Livresdécembre, 1985Colombie, Amérique centrale, Amérique du Sud
The objectives of the diagnosis of bean production are to (1) contribute criteria for the design and completion of on-farm trials of the new bean technology and (2) to take information to research centers that helps define bean research priorities. A summary is presented of the methodology suggested and practiced in national and international courses on on-farm research carried out by CIAT's bean program.
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Library ResourceArticles et Livresdécembre, 1985Afrique, Afrique orientale
Examines the productivity of East African pastoral systems in terms of animal protein & energy production, milk offtake and livestock production parameters such as calving percentage, calf mortality and herd structure; compares the productivity of East African pastoral systems to those of commercial ranches and to pastoral systems in other parts of the world.
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Library ResourceRapports et recherchesdécembre, 1985Colombie, Amérique centrale, Amérique du Sud
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Library ResourceRapports et recherchesdécembre, 1985
Looks at the allocation of resources to livestock research in Africa. Assesses the role of agricultural research and its value to national governments. Investigates the appropriate criteria to use for decision making by comparing three kinds of decision-making models. Presents conclusions for policy-making.
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Library ResourceRapports et recherchesdécembre, 1985Bolivie, Amérique centrale, Amérique du Sud
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Library Resource
Les petits ruminants dans l'agriculture africaine
Documents et rapports de conférenceoctobre, 1985 -
Library ResourceArticles et Livresdécembre, 1985Afrique, Afrique orientale
Examines the productivity of East African pastoral systems in terms of animal protein & energy production, milk offtake and livestock production parameters such as calving percentage, calf mortality and herd structure; compares the productivity of East African pastoral systems to those of commercial ranches and to pastoral systems in other parts of the world.
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Library ResourceArticles et Livresdécembre, 1985République-Unie de Tanzanie, Afrique, Afrique australe
Evaluates the productivity of grade Boran cattle maintained by chemoprophylaxis under severe trypanosomiasis risk at Mkwaja ranch, Tanzania; uses data based on more than 20,000 calving records over the 10-year period from 1973 to 1982; discusses environmental influences on performance traits and links between tsetse population dynamics & cattle; includes comparison of Boran genotypes and its effect on pre-weaning growth characters.
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