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- W1276451639 abstract "Background: Phosphorus recycling from waste and localised placement of fertilisers can be means to improve sustainable P management in agriculture. However, knowledge about root and plant P uptake responses to placement of complex waste- derived fertilisers is lacking.Methods: Sewage sludge (SS) and sewage sludge ash (ASH) were tested against triple superphosphate (TSP) in a rhizobox setup where shoot and root growth of maize was followed for 30 days. The three P sources were either mixed homogenously into the soil (labelled with 33P) or localised in a patch close to the seed.Results: While localised TSP and SS both increased root length density around the fertiliser patch, it was at the expense of the remaining root system and soil P uptake for SS. Hence, total P uptake was slightly lower and dry matter yields similar to mixed SS. Thus, only TSP enhanced dry matter yield and fertiliser P uptake compared to the mixed source. No root response was found for localised ASH, and mixed ASH more than doubled dry matter yield and P uptake in comparison.Conclusions: Localised placement of fertilisers can be expected to be beneficial for young maize plants only for fertiliser types that can supply sufficient amounts of readily available P." @default.
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- W1276451639 date "2015-07-01" @default.
- W1276451639 modified "2023-09-27" @default.
- W1276451639 title "Early maize root and phosphorus uptake responses to localised application of sewage sludge derived fertilisers" @default.
- W1276451639 hasPublicationYear "2015" @default.
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