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Forms of Inorganic Phosphorus in Soil under Different Long Term Soil Tillage Systems and winter Crops

Tiecher, T.; Santos, D.R.; Kaminski, J. and Calegari, A. (2012) Forms of Inorganic Phosphorus in Soil under Different Long Term Soil Tillage Systems and winter Crops. Revista Brasileira de Ci�ncia do Solo, 36, pp. 271-281.

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Summary

The cultivation of crops with different capacity of P uptake and use under long-term soil tillage systems can affect the distribution of P cycling and inorganic forms in the soil, as a result of higher or lower use efficiency of P applied in fertilizers. The purpose of this study was to evaluate the effect of long-term cultivation of different winter species under tillage systems on the distribution of inorganic P forms in the soil. In 1986, the experiment was initiated with six winter crops (blue lupin, hairy vetch, oat, oilseed radish, wheat and fallow) on a Rhodic Hapludox in southwestern Paraná, under no-tillage (NT) and conventional tillage (CT ). The application of phosphate fertilizer in NT rows increased inorganic P in the labile and moderately labile forms, and soil disturbance in CT redistributed the applied P in the deeper layers, increasing the moderately labile P concentration in the subsurface layers. Black oat and blue lupin were the most efficient P-recyclers and under NT, they increased the
labile P content in the soil surface layers.


EPrint Type:Journal paper
Subjects: Soil > Nutrient turnover
Crop husbandry > Soil tillage
Research affiliation: Brazil > Other organizations
European Union > OSCAR
H2020 or FP7 Grant Agreement Number:289277
ISSN:0100-0683
Deposited By: ARAUJO, MR AUGUSTO
ID Code:29914
Deposited On:10 Apr 2016 09:14
Last Modified:10 Apr 2016 09:14
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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