Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria

Colombia

Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria

Colombia
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Medina O.R.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Ospina A.G.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Restrepo E.M.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Diaz Z.C.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria
Tropical and Subtropical Agroecosystems | Year: 2014

Lack of knowledge on techniques for the sexual propagation of Tithonia diversifolia, together with the low supply of asexual material (cuttings) to start planting this species, have been the main bottlenecks for the expansion of intensive silvopastoral systems with Tithonia shrubs for direct browsing. Although some farmers and researchers had made chance observations of Tithonia reproduction from seed, no successful cases had been documented until recently of the sexual propagation of this species for planting in mixed fodder banks and intensive silvopastoral systems. Some observations made in 2011 on the germination of Tithonia seeds from flowering branches used as ground cover in a germination bed, generated a protocol for the efficient and low cost propagation of this species. This article summarizes the first systematic experience on the sexual propagation of Tithonia diversifolia for the rehabilitation of cattle ranches, and describes a technique that can be applied to obtain 17,000 seedlings per kilogram of seed.


Raquel Salazar B.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Rolando Barahona R.,National University of Colombia | Julian Chara O.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Maria Solange Sanchez P.,Compania Nacional de Chocolates
Tropical and Subtropical Agroecosystems | Year: 2015

Rhipicephalus (Boophilus) microplus ticks cause significant economic losses to the Colombian cattle sector: reduction in meat and milk production, blood losses and transmission of blood parasites. The degree of infestation depends on the breed, physiological state and nutrition of the animal and on microclimatic characteristics, which affect the life cycle of the tick. Diverse studies suggest that given SSPi characteristics, tick loads within these systems are lower. In this study, the tick load of grazing animals was monitored within five groups: three at an intensive silvopastoral system (ISS) and two at traditional farms located on the Valley of Ibague (Tolima). Groups at the ISS, showed higher tick loads within high production cattle (P = 0.026) and a positive relationship (P < 0.05) between milk production and tick load in August sampling. Statistical difference was observed for group in San Javier (traditional farm) counts. We conclude that the dynamics of ticks is a complex phenomenon affected by many factors, whose association determines the observed tick population at any given time.


Murgueitio E.R.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Chara J.O.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Barahona R.R.,National University of Colombia | Cuartas C.C.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria | Naranjo J.R.,Fundacion Centro Para La Investigacion En Sistemas Sostenibles Of Produccion Agropecuaria
Tropical and Subtropical Agroecosystems | Year: 2014

Intensive silvopastoral systems (iSPS) are emerging as a tool for mitigation and adaptation of cattle ranching to climate change (CC). Under iSPS, 12 times more beef is produced than under extensive pastures and 4.5 more beef than under improved pastures without trees, but methane (CH4) emissions do not increase in the same proportion being 6.8 and 2.8 higher in the iSPS, respectively. In consequence, methane emissions per ton of beef produced are 1.8 times lower in the iSPS as compared with extensive pastures. Producing 10,000 tons of meat per year requires almost 150,000 has of extensive pastures that have a negative emission balance (more than 48,000 ton of CO2 eq). Producing the same amount of meat in iSPS requires only around 12,000 has with a positive balance of more than 3,000 ton of CO2 eq reduced. ISPS also contribute to the adaptation of cattle farming to CC, since they maintain soil moisture, reduce environment temperature while improving productivity and quality of forage and reduce seasonality of beef and milk production. In the dry Caribbean region of Colombia, iSPS reduce average annual temperature (2 to 3 °C; with differences of up to 13 °C in the warmest days), increase relative humidity in driest regions by 10 to 20% and reduce evapotranspiration (1.8 mm/day). Thus, iSPS contribute to mitigation and adaptation of tropical cattle ranching to CC.

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