características estruturais de milheto sob pastejo rotativo com diferentes períodos de descanso structural characteristics of pearl millet under rotational grazing with different rest periods
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2009
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Abstract
Com o objetivo de determinar o período de descanso (PD) ideal para a pastagem de milheto (Pennisetum glaucum (L.) R.Br.), realizou-se um experimento em delineamento completamente ao acaso, com três períodos de descanso (tempos necessários para expansão completa de 1,5 a 2; 2,5 a 3; ou 3,5 a 4 novas folhas), cada um com quatro repetições de área (potreiros). Foram avaliados o número de folhas vivas/perfilho (NFV), o comprimento final da lâmina (CFL), a relação lâmina/bainha e colmo (L/B+C) e a densidade de perfilhos basilares (DPB) e aéreos (DPA). A maior densidade de perfilhos basais, o maior número de folhas vivas e a maior relação lâmina/bainha+colmo no menor período de descanso determinaram maior participação de lâminas verdes no dossel da pastagem e as melhores características estruturais para produção de forragem.
This work used the necessary time (days) for a completely elongation of new leaves, i.e., 1.5-2.0; 2.5-3.0 and 3.5-4.0 new leaves completely elongated in order to determine the rest period (RP) between grazing in Pearl millet (Pennisetum glaucum (L.)R. Br.). The experiment was carried out as a completely randomized design with four replications (paddocks). Evaluations were performed for: number of live leaves/tiller (NAL); final length blade (FLB); blade/sheath and culm ratio (B/S+C); basal tiller density (BTD) and aerial tiller density (ATD). The higher BTD; NAL and B/S+C ratio observed in the shortest rest period determined the high quantity of green blades in the pasture sward and consequently the best structural characteristics from the forage point of view.
This work used the necessary time (days) for a completely elongation of new leaves, i.e., 1.5-2.0; 2.5-3.0 and 3.5-4.0 new leaves completely elongated in order to determine the rest period (RP) between grazing in Pearl millet (Pennisetum glaucum (L.)R. Br.). The experiment was carried out as a completely randomized design with four replications (paddocks). Evaluations were performed for: number of live leaves/tiller (NAL); final length blade (FLB); blade/sheath and culm ratio (B/S+C); basal tiller density (BTD) and aerial tiller density (ATD). The higher BTD; NAL and B/S+C ratio observed in the shortest rest period determined the high quantity of green blades in the pasture sward and consequently the best structural characteristics from the forage point of view.
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pedroso2009revistacaractersticas
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| Authors | ;Carlos Eduardo da Silva Pedroso;Pedro Lima Monks;Otoniel Geter Lauz Ferreira;Otávio Matos Tavares;Lasier Silveira Lima |
| Journal | european journal of lipid science and technology |
| Year | 2009 |
| DOI |
10.1590/S1516-35982009000500004
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