Publication Date
1993
Description
Increasing demands for new cultivars of grasses adapted to the acid soils of tropical savannas and resistant to spittlebugs (Homoptera:Cercopidae) led CIAT to organise collections of Brachiaria spp. germplasm in eastern Africa in the 1980s. Over 800 accessions were assembled and distributed to various countries. Bmpresa Brasileira de Pesquisa Agropeculiria (BMBRAPA) received about 300 accessions which are being evaluated with the objective of selecting superior Brachiaria cultivars to be released to farmers. This paper reports on the agronomic performance of 184 accessions belonging to 5 different species, evaluated for 2 years in small plots, in Campo Grande, MS, Brazil. Parameters of highest priority were leaf dry matter annual yield (LDM) proportion dry season LDM yield; leaf to stem ratio; and regrowth characterislics after cuts (5 during wet and l at end of dry season). Statistical comparisons and Ward's minimum variance cluster analysis helped identify 9 accessions to advance for grazing studies: 6 are B. briiat11l1a superior to the standard cultivar cv. Marando; one B. decumbe11s superior to cv. Basilisk; one B. lrumidicola and one B, jubata.
Citation
Do Valle, C B.; Calixto, S; and Amexquita, M C., "Agronomic Evaluation of Brachiaria germplasm in Brazil" (2024). IGC Proceedings (1993-2023). 12.
https://uknowledge.uky.edu/igc/1993/session13/12
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Agronomic Evaluation of Brachiaria germplasm in Brazil
Increasing demands for new cultivars of grasses adapted to the acid soils of tropical savannas and resistant to spittlebugs (Homoptera:Cercopidae) led CIAT to organise collections of Brachiaria spp. germplasm in eastern Africa in the 1980s. Over 800 accessions were assembled and distributed to various countries. Bmpresa Brasileira de Pesquisa Agropeculiria (BMBRAPA) received about 300 accessions which are being evaluated with the objective of selecting superior Brachiaria cultivars to be released to farmers. This paper reports on the agronomic performance of 184 accessions belonging to 5 different species, evaluated for 2 years in small plots, in Campo Grande, MS, Brazil. Parameters of highest priority were leaf dry matter annual yield (LDM) proportion dry season LDM yield; leaf to stem ratio; and regrowth characterislics after cuts (5 during wet and l at end of dry season). Statistical comparisons and Ward's minimum variance cluster analysis helped identify 9 accessions to advance for grazing studies: 6 are B. briiat11l1a superior to the standard cultivar cv. Marando; one B. decumbe11s superior to cv. Basilisk; one B. lrumidicola and one B, jubata.
