03 b rogerio
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Mantendo pastos altos
Eng. Agr. MSc. Rogério Jaworski dos Santos
IV Encuentro de Ganaderos de Pastizales Naturales
La Paloma, 14 a 16 de Outubro de 2010
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Todos felizes.
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Relação entre oferta de matéria seca e massa de forragem com o ganho por animal e ganho por hectare, em pastagem nativa da Depressão Central do RS (adaptado de Maraschin, 1998).
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Pastos altos
• Heterogeneidade dos potreiros– Topos e baixadas– Potreiros grandes
• Diferimento– 3 meses– Reserva para períodos frios ou secos– Uso com sal proteinado no inverno
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Sobra de pasto: no frio e na seca
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Efeitos do diferimento nas plantas• Aumento na área foliar
– Mais absorção de CO2
– Mais absorção de luz
• Aumento no sistema radicular– Mais absorção de água– Mais absorção de nutrientes
• Ressemeadura
• Acúmulo de reservas
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