Gutiérrez Solís, Jhon Freddy

Hincapié Carvajal, Belisario

Hoek, Rein van der

Peters, Michael

Sotelo, M.

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1. THE MESSAGE• Large parts of the livestock sector are managed withextensive grazing systems and many times with nativeforage materials available in the grasslands or degraded thatdo not allow an adequate use of the land, resulting in a lowcarrying capacity.• The introduction of new forage materials, which are adaptedto adverse conditions and provide excellent nutritionalquality is necessary.2. INTRODUCTION• Perennial native to SE tropical Africa.• The available information indicates that this grass can be considered as a forage option for regions with long periods of drought. Agronomic Evaluation of 20 Accessions of Chloris gayana During Maximum and Minimum Precipitation in Colombia1International Center for Tropical Agriculture - CIAT, Tropical Forages, A.A. 6713, Cali, Colombia 2 CIAT, NicaraguaM. Sotelo1, J. F. Gutierrez Solis1, B. Hincapie1, R. van der Hoek2, M. Peters14. RESULTS• The average production in dry season varied between 32.6 and70.1 t/on DM ha-1, where the best accessions were ILRI13330, ILRI 981, ILRI 13053, ILRI 10225 with a production of70.1, 66.4, 61.5, 59.7 t/on DM ha-1, respectively.• In wet season the forage production varied between 24.3 and46.8 t/on DM ha-1, where the top four materials were ILRI18498, ILRI 7384, ILRI 15570, 15573 ILRI with a production of46.8, 41.38, 41.07, 40.84 t/on DM ha-1, respectively.5. CONCLUSIONS• Chloris gayana is a good forage alternative due to its excellent biomass production during both the rainy and the dry season.• Studies of nutritional quality and persistence of selected accessions under frequent cutting and under grazing are suggested.• Regional testing of promising accessions of C. gayanagermplasm is indicated.• The high seed production allows natural re-vegetation of the material during rainy season, but also make it less palatable.3. METHODS• Productive parameters of a collection of 20 accessions of Chloris gayana requested from the International Livestock Research Institute (ILRI), with two control materials, B. brizantha CIAT 26110 cv. Toledo and Brachiaria hybrid CIAT 36087 cv. Mulato II, were evaluated at the International Center for Tropical Agriculture – CIAT, in Cali, Colombia. Data was collected from August 2014 to March 2015 in two seasons, one with maximum and one with minimum precipitation.• Plots of 3 x 2.5 m were established with 3 replications; agronomic evaluation included vigour, plant height, susceptibility to pests and diseases, nutrient deficiencies and dry matter yield, every 6-weeks regrowth; phenological and seed production observations in an additional replication.Funding of this project by INIFAP (Mexico) is gratefully acknowledged.Figure 1. DM yield after 6 weeks of growth in the wet and dry season (mean of two cuts) of the Chloris gayana collection.Tropentag 2015Information contact: m.sotelo@cgiar.orgDM Ton/ha/yearPicture 3. Panoramic  trial.Picture 1. Initial establishment of materials in plates in greenhouses and 2. Established in the field.Picture 4. Plant characteristics.

Agronomic evaluation of 20 accessions of Chloris gayana during maximum and minimum precipitation in Colombia

https://cgspace.cgiar.org/bitstream/10568/73358/1/Poster_TPTAG_2015_sotelo.pdf

Agronomic evaluation of 20 accessions of Chloris gayana during maximum and minimum precipitation in Colombia

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