Use and recovery of P reserves in Southern Brazil Oxisols under no-till with low and high P availability
Magno Batista Amorim,
Sandra Mara Vieira Fontoura,
Tales Tiecher
et al.
Abstract:The accessibility of soil P reserves by plants on highly weathered Brazilian soils remains unclear. In this study, we assessed the contribution of soil P fractions to P uptake by soybean plants in two no-till Oxisols (Latossolos), with low and high initial content of available P. The recommended P rates (viz., 153 and 50 kg ha
-1
yr
-1
in the low-P and high-P soil, respectively) were applied in the form of triple superphosphate (TSP) or Bayovar rock phosphate (BRP) plus … Show more
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