Despite the fact that many smallholder farming systems in developing countries revolve around the interactions of crop and livestock enterprises, the modelling of these systems using combinations of detailed crop and livestock models is comparatively underdeveloped. A wide variety of separate cro...
Thornton, Philip K.
,
Herrero, Mario T.
,
[Integrated crop-livestock simulation models for scenario analysis and impact assessment]
,
Integrated crop-livestock simulation models for scenario analysis and impact assessment
Farmers' objectives and the factors affecting them were studied in 91 dairy farms in Costa Rica. Objective's hierarchies were studied using Rokeach's technique with a mixture of personal, economic and familiar goals. A canonical correlation analysis was performed to find out simple and canonical ...
Solano, C.
,
León, H.
,
Pérez, E.
,
Herrero, Mario T.
,
[Characterising objective profiles of Costa Rican dairy farmers]
,
Characterising objective profiles of Costa Rican dairy farmers
Effects of harvesting ruminal micro-organisms from ruminal fluid on patterns of gas production were investigated in experiment 1 by incubating 200 mg DM of pure cellulose, oatfeed, ryegrass, cocksfoot, wet and dry season kikuyu grasses with either diluted ruminal fluid or harvested ruminal bacter...
Nagadi, S.
,
Herrero, Mario T.
,
Jessop, N.S.
,
[The effect of fermentable nitrogen availability on the gas production degradability of NDF]
,
The effect of fermentable nitrogen availability on the gas production degradability of NDF
This article uses qualitative and quantitative data to document the nature
of educational practices in a pastoralist area in Tanzania, and to provide
evidence that the schooling process, amongst other influences, has
encouraged and facilitated the uptake and expansion of farming by these
pastoral...
Radeny, Maren A.O.
,
Nkedianye, D.
,
Kristjanson, Patricia M.
,
Herrero, Mario T.
,
[Livelihood choices and returns among pastoralists: Evidence from southern Kenya]
,
Livelihood choices and returns among pastoralists: Evidence from southern Kenya
In African smallholder agriculture, improved farm-scale understanding of the interaction between the household, crops, soils and livestock is required to develop appropriate strategies for improving productivity. A combination of models was used to analyse land use and labour allocation strategie...
Zingore, Shamie
,
González Estrada, E.
,
Delve, Robert J.
,
Herrero, Mario T.
,
Dimes, John P.
,
Giller, Ken E.
,
[An integrated evaluation of strategies for enhancing productivity and profitability of resource-constrained smallholder farms in Zimbabwe]
,
An integrated evaluation of strategies for enhancing productivity and profitability of resource-constrained smallholder farms in Zimbabwe
The objective of this work was to determine the applicability of the dry-weight-rank (DWR) method for evaluating the botanical composition of forest understorey vegetation. An analysis of plant species abundance was carried out, and instead of ranking the three most abundant species, as is common...
González Estrada, E.
,
Fawcett, R.H.
,
Herrero, Mario T.
,
[Integrating models of relative abundance of species with the dry-weight-rank method for the botanical analysis of forest understorey vegetation]
,
Integrating models of relative abundance of species with the dry-weight-rank method for the botanical analysis of forest understorey vegetation
The objective of this work was to develop a Decision-Support System (DSS) in order to support the decision making process by campesino farmers of Central Mexico. Two biological models, one socio-economic model and a survey database form the DSS. The CERES-Maize model simulated the yield response ...
Castelán-Ortega, O.A.
,
Fawcett, R.H.
,
Arriaga-Jordán, C.
,
Herrero, Mario T.
,
[A Decision Support System for smallholder campesino maize-cattle production systems of the Toluca Valley in Central Mexico. Part I—Integrating biological and socio-economic models into a holistic system]
,
A Decision Support System for smallholder campesino maize-cattle production systems of the Toluca Valley in Central Mexico. Part I—Integrating biological and socio-economic models into a holistic system
This paper describes the functioning and validation of the Decision Support Systems described in the first part of the paper. The DSS ran three case studies with different farm sizes that represent the range of farmers found in the Valley. The DSS results were validated against survey data for th...
Castelán-Ortega, O.A.
,
Fawcett, R.H.
,
Arriaga-Jordán, C.
,
Herrero, Mario T.
,
[A Decision Support System for smallholder campesino maize-cattle production systems of the Toluca Valley in Central Mexico. Part II—Emulating the farming system]
,
A Decision Support System for smallholder campesino maize-cattle production systems of the Toluca Valley in Central Mexico. Part II—Emulating the farming system
Leaves of 12 accessions of Brachiaria sp. (three accessions from each of four species) were subjected to tests of shearing strength using a Warner Bratzler meat shear. Morphological measurements of these leaves were also taken in an attempt to standardize shearing strength measurements per unit o...
Hughes, N.R.G.
,
Valle, Cacilda Borges do
,
Sabatel, V.
,
Boock, J.
,
Jessop, N.S.
,
Herrero, Mario T.
,
[Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes]
,
Shearing strength as an additional selection criterion for quality in Brachiaria ecotypes
The effects of 3 different stocking rates (1, 2 and 3 cows/ha/yr) on sward structure and the amount and pattern of live leaf defoliation were studied at different hierarchical levels within swards of
signal grass (Brachiaria decumbens
) pastures. Permanently marked plants and tillers were followe...
Busqué, J.
,
Herrero, Mario T.
,
[Sward structure and patterns of defoliation of signal grass (Brachiaria decumbens) pastures under different cattle grazing intensities]
,
Sward structure and patterns of defoliation of signal grass (Brachiaria decumbens) pastures under different cattle grazing intensities