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Estimativa da disponibilidade de fósforo para a cultura do arroz irrigado em solos do RS
(Universidade Federal de Santa Maria, 2004-12-17)
The evaluation of the available phosphorus (P) is hindered in lowland soils flooded for the rice cultivation, since the alternation in the oxidation and reduction conditions determine modifications in the dynamics of this ...
Potencial de ciclagem de nitrogênio e potássio pelo nabo forrageiro intercalar ao cultivo do milho e trigo sob plantio direto
(Universidade Federal de Santa Maria, 2004-05-26)
The best understanding of nutrients cycling by crops provides a clearer vision of the contribution of the plants in the accumulation and availability of nutrients in no -tillage. The hypothesis of this work is that the use ...