Desempenho agronômico de gramíneas forrageiras sob sombreamento de seringal adulto

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Costa, Newton de Lucena

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ArticleLanguage: Portuguese Description: 21(2):65-68Subject(s): In: Pasturas Tropicales (Colombia)Summary: En un Latosol Amarelo del campo experimental de la Empresa Brasileira de Pesquisa Agropecuária (Embrapa) en Rondônia, localizado en Porto Velho, Brasil (96 m.s.n.m., 8 grados 46'de latitud sur y 63 grados 5'de longitud oeste), entre octubre de 1996 y abril de 1998 se evaluó el desempeño agronómico de siete especies de gramíneas forrajeras (Brachiaria brizantha cv. Marandu, B. humidicola, Paspalum atratum BRA-9610, P. guenoarum BRA-3824, P. regnelli BRA-0159, P. plicatulum BRA-9661 y Hemarthria altissima). Durante la época de lluvias, la mayor producción de MS se alcanzó con B. brizantha (3.7 t/ha), P. atratum BRA-9610 (1.98 t/ha) y B. humidicola (1.7 t/ha). Durante la época seca, las mayores producciones de MS se obtuvieron con B. brizantha (1.66 t/ha) y P. atratum BRA-9610 (1.48 t/ha). En la primera época, la mayor concentración (g/kg) de N y P se presentó en P. regnelli BRA-0159 (17.2 y 0.98), P. guenoarum BRA-3824 (13.4 y 1.32) y B. humidicola (13.2 y 1.28), mientras que P. atratum BRA-9610 (5.6) y B. humidicola (6.3) presentaron las mayores concentraciones de Ca. En la segunda época, P. regnelli BRA-0159 presentó la mayor concentración de N (19.3) y B. humidicola y B. brizantha presentaron las mayores concentraciones de P (1.67 y 1.54) y Ca (6.9 y 6.1), respectivamente.Summary: Between October 1996 and April 1998, the agronomic performance of seven forage grass species was evaluated in a yellow Latosol at the experimental field of the Brazilian Agricultural Research Enterprise (Embrapa) in Rondônia (Porto Velho, Brazil), located 96 m above sea level, 8 degrees 46' S latitude and 63 degrees 5' W longitude). Grass species evaluated were Brachiaria brizantha cv. Marandu, B. humidicola, Paspalum atratum BRA-9610, P. guenoarum BRA-3824, P. regnelli BRA-0159, P. plicatulum BRA-9661, and Hemarthria altissima. During the rainy season, the highest DM production was reached with B. brizantha (3.7 t/ha), P. atratum BRA-9610 (1.98 t/ha), and B. humidicola (1.7 t/ha). During the dry season, the highest DM production was obtained with B. brizantha (1.66 t/ha) and P. atratum BRA-9610 (1.48 t/ha). During the first season, higher N and P concentrations (g/kg) were found in P. regnelli BRA-01 59 (17.2 and 0.98), P. guenoarum BRA-3824 (13.4 and 1.32), and B. humidicola (13.2 and 1.28), whereas highest Ca concentrations were found in P. atratum BRA-9610 (5.6) and B. humidicola (6.3). During the second season, P. regnelli BRA-01 59 presented a higher N concentration (19.3) and B. humidicola and B. brizantha the highest P (1.67 and 1.54) and Ca concentrations (6.9 and 6.1), respectively.

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En un Latosol Amarelo del campo experimental de la Empresa Brasileira de Pesquisa Agropecuária (Embrapa) en Rondônia, localizado en Porto Velho, Brasil (96 m.s.n.m., 8 grados 46'de latitud sur y 63 grados 5'de longitud oeste), entre octubre de 1996 y abril de 1998 se evaluó el desempeño agronómico de siete especies de gramíneas forrajeras (Brachiaria brizantha cv. Marandu, B. humidicola, Paspalum atratum BRA-9610, P. guenoarum BRA-3824, P. regnelli BRA-0159, P. plicatulum BRA-9661 y Hemarthria altissima). Durante la época de lluvias, la mayor producción de MS se alcanzó con B. brizantha (3.7 t/ha), P. atratum BRA-9610 (1.98 t/ha) y B. humidicola (1.7 t/ha). Durante la época seca, las mayores producciones de MS se obtuvieron con B. brizantha (1.66 t/ha) y P. atratum BRA-9610 (1.48 t/ha). En la primera época, la mayor concentración (g/kg) de N y P se presentó en P. regnelli BRA-0159 (17.2 y 0.98), P. guenoarum BRA-3824 (13.4 y 1.32) y B. humidicola (13.2 y 1.28), mientras que P. atratum BRA-9610 (5.6) y B. humidicola (6.3) presentaron las mayores concentraciones de Ca. En la segunda época, P. regnelli BRA-0159 presentó la mayor concentración de N (19.3) y B. humidicola y B. brizantha presentaron las mayores concentraciones de P (1.67 y 1.54) y Ca (6.9 y 6.1), respectivamente. spa

Between October 1996 and April 1998, the agronomic performance of seven forage grass species was evaluated in a yellow Latosol at the experimental field of the Brazilian Agricultural Research Enterprise (Embrapa) in Rondônia (Porto Velho, Brazil), located 96 m above sea level, 8 degrees 46' S latitude and 63 degrees 5' W longitude). Grass species evaluated were Brachiaria brizantha cv. Marandu, B. humidicola, Paspalum atratum BRA-9610, P. guenoarum BRA-3824, P. regnelli BRA-0159, P. plicatulum BRA-9661, and Hemarthria altissima. During the rainy season, the highest DM production was reached with B. brizantha (3.7 t/ha), P. atratum BRA-9610 (1.98 t/ha), and B. humidicola (1.7 t/ha). During the dry season, the highest DM production was obtained with B. brizantha (1.66 t/ha) and P. atratum BRA-9610 (1.48 t/ha). During the first season, higher N and P concentrations (g/kg) were found in P. regnelli BRA-01 59 (17.2 and 0.98), P. guenoarum BRA-3824 (13.4 and 1.32), and B. humidicola (13.2 and 1.28), whereas highest Ca concentrations were found in P. atratum BRA-9610 (5.6) and B. humidicola (6.3). During the second season, P. regnelli BRA-01 59 presented a higher N concentration (19.3) and B. humidicola and B. brizantha the highest P (1.67 and 1.54) and Ca concentrations (6.9 and 6.1), respectively. eng