Publication Date
1993
Description
Adaptability of 5 grass and 13 legume accessions tested in 34 regional agronomic trials throughout the South American humid tropics was assessed by conducting a multilocational analysis on seasonal dry matter (DM) yield at 12 weeks regrowth. Among legumes, Stylosamhes guianensis CIAT 184 and 136, Desmodium ovaifolum CIAT 350, Zornia latifolla CIAT 728 and Centrosema macrocarpum CIAT 5065 were the highest yielding accessions in both rainfall periods and showed high adaptability to environmental conditions. Centrosema brasllianan CIAT 5234, C. pubescence CIAT 438 and Desmodiun heterophyifom CIAT 349 had low productivity and low adaptability. For grasses, Andropogon gayanus CIAT 621 outyielded Brachiaria briwntha ClAT 6780, B. decumbens CIAT 606, B. dictyoneura CIAT 6133 and B. llumidicola CIAT 679 during the high rainfall period but had DM yields similar to that of the other accessions during the low rainfall period, except for CIAT 679, which produced less DM. During minimum rainfall, B. brfaantha CIAT 6780 showed the highest environmental adaptability, followed by A. gayanus CIAT 621 and B. dictyoneura CIAT 6133, while lower adaptability was recorded for B. decumbe11s CIAT 606 and B. humid/cola CIAT 679. During maximum rainfall, all accessions showed an intermediate adaptability to, environmental conditions. This study demonstrated that a range of adapted forage legume and grass options are now available for the South American humid tropics.
Citation
Keller-Grein, G; Amezquita, M C.; Lema, G; and Franco, L H., "Multilocational Testing of Grasses and Legumes in the Humid Tropics of South America" (2024). IGC Proceedings (1993-2023). 12.
https://uknowledge.uky.edu/igc/1993/session9/12
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Multilocational Testing of Grasses and Legumes in the Humid Tropics of South America
Adaptability of 5 grass and 13 legume accessions tested in 34 regional agronomic trials throughout the South American humid tropics was assessed by conducting a multilocational analysis on seasonal dry matter (DM) yield at 12 weeks regrowth. Among legumes, Stylosamhes guianensis CIAT 184 and 136, Desmodium ovaifolum CIAT 350, Zornia latifolla CIAT 728 and Centrosema macrocarpum CIAT 5065 were the highest yielding accessions in both rainfall periods and showed high adaptability to environmental conditions. Centrosema brasllianan CIAT 5234, C. pubescence CIAT 438 and Desmodiun heterophyifom CIAT 349 had low productivity and low adaptability. For grasses, Andropogon gayanus CIAT 621 outyielded Brachiaria briwntha ClAT 6780, B. decumbens CIAT 606, B. dictyoneura CIAT 6133 and B. llumidicola CIAT 679 during the high rainfall period but had DM yields similar to that of the other accessions during the low rainfall period, except for CIAT 679, which produced less DM. During minimum rainfall, B. brfaantha CIAT 6780 showed the highest environmental adaptability, followed by A. gayanus CIAT 621 and B. dictyoneura CIAT 6133, while lower adaptability was recorded for B. decumbe11s CIAT 606 and B. humid/cola CIAT 679. During maximum rainfall, all accessions showed an intermediate adaptability to, environmental conditions. This study demonstrated that a range of adapted forage legume and grass options are now available for the South American humid tropics.
