Brachiaria hybrid, Urochloa hybrid, growth rate.
Objective: To evaluate for 10 weeks the growth of five Urochloa cultivars: Camello,
Cobra, Cayman, Convert 330, Mavuno and Xaraés; during the North Winds (NS), Dry
(DS) and Rainy (RS) seasons in a warm sub-humid environment.
Design/Methodology/Approach: The variables were crop growth rate (CGR; kg ha-1 d-1 ) and total dry matter yield (TDM; t ha -1 ); which were analyzed under a completely
randomized design (Tukey; p=0.05).
Results: During NS, Mavuno and Xaraés presented, on average, the highest values ??of
CGR (p<0.05), 23.7 and 19.4 kg ha-1 d-1, respectively. In DS the cultivars Xaraés,2
Convert 330, Mavuno, and Cayman presented the highest values, with 20.7 and 26.8 kg
ha-1 d-1 , in week 2 and 4, respectively. During RS, in the second and fourth week of
regrowth, the Xaraés and Mavuno cultivars presented the highest CGR (p<0.05), 119.8
and 144.7 kg ha-1 d-1 , on average. In the NS, the Mavuno hybrid presented the highest
yields (p<0.05) of TDM, 0.886, 1.553 and 2.156 t ha -1 in week 6, 8 and 10, respectively.
For RS, the cultivars Camello, Cayman, Mavuno, and Xaraés presented similar yields of
TDM; which, on average, were 4.652, 5.312 and 6.278 t ha -1 , at 6, 8 and 10 weeks,
Findings/Conclusions: The cultivars Xaraés, Mavuno and Cayman presented good
forage potential in a warm sub-humid environment; mainly for showing greater growth
and accumulation of total dry matter.