Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols

Amin Soltangheisi; Paul John Anthony Withers; Vitor Vargas; Marquel Holzschuh; Paulo Pavinato

doi:10.1016/j.still.2020.104770

Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols

Amin Soltangheisi
, Paul John Anthony Withers
, Vitor Vargas
, Marquel Holzschuh
, Paulo Pavinato

University of Sao Paulo
SLC Agrícola
Lancaster University
Departamento de Ecologia, Universidade de São Paulo

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

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Crop rotation, cover crops introduction and no tillage adoption have improved tropical agriculture sustainability through improvements on soil conservation and water use efficiency. Soil fertility and topsoil phosphorus (P) accumulation is also altered by management, affecting P dynamics and its use for subsequent cash crops. Changes in soil P fractions promoted by no-tillage (NT) and conventional tillage (CT) in soybean/cotton crop systems with different cover crop rotations (fallow, maize as second crop, brachiaria and millet) were investigated in two long-term trials in Brazilian Oxisols (Ox-1 and Ox-2), and compared to soils under native Cerrado vegetation. Hedley’s P fractionation was performed in soil samples taken from 0 to 5, 5 to 10 and 10 to 20 cm depth layers and P fractions grouped by their predicted lability. Long-term cultivation generated large amounts of legacy P in the soil (184−341 mg kg−1) but only a small portion remained in labile fractions (11–16 %), with a slight increase in non-labile P (

Iaith wreiddiol	Saesneg
Rhif yr erthygl	104770
Cyfnodolyn	Soil & Tillage Research
Cyfrol	205
Dyddiad ar-lein cynnar	29 Awst 2020
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.1016/j.still.2020.104770
Statws	Cyhoeddwyd - Ion 2021
Cyhoeddwyd yn allanol	Ie

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10.1016/j.still.2020.104770

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@article{93c5190a8e4e48bab073220cf798d847,

title = "Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols",

abstract = "Crop rotation, cover crops introduction and no tillage adoption have improved tropical agriculture sustainability through improvements on soil conservation and water use efficiency. Soil fertility and topsoil phosphorus (P) accumulation is also altered by management, affecting P dynamics and its use for subsequent cash crops. Changes in soil P fractions promoted by no-tillage (NT) and conventional tillage (CT) in soybean/cotton crop systems with different cover crop rotations (fallow, maize as second crop, brachiaria and millet) were investigated in two long-term trials in Brazilian Oxisols (Ox-1 and Ox-2), and compared to soils under native Cerrado vegetation. Hedley{\textquoteright}s P fractionation was performed in soil samples taken from 0 to 5, 5 to 10 and 10 to 20 cm depth layers and P fractions grouped by their predicted lability. Long-term cultivation generated large amounts of legacy P in the soil (184−341 mg kg−1) but only a small portion remained in labile fractions (11–16 \%), with a slight increase in non-labile P (",

author = "Amin Soltangheisi and Withers, \{Paul John Anthony\} and Vitor Vargas and Marquel Holzschuh and Paulo Pavinato",

year = "2021",

month = jan,

doi = "10.1016/j.still.2020.104770",

language = "English",

volume = "205",

journal = "Soil \& Tillage Research",

issn = "0167-1987",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols

AU - Soltangheisi, Amin

AU - Withers, Paul John Anthony

AU - Vargas, Vitor

AU - Holzschuh, Marquel

AU - Pavinato, Paulo

PY - 2021/1

Y1 - 2021/1

N2 - Crop rotation, cover crops introduction and no tillage adoption have improved tropical agriculture sustainability through improvements on soil conservation and water use efficiency. Soil fertility and topsoil phosphorus (P) accumulation is also altered by management, affecting P dynamics and its use for subsequent cash crops. Changes in soil P fractions promoted by no-tillage (NT) and conventional tillage (CT) in soybean/cotton crop systems with different cover crop rotations (fallow, maize as second crop, brachiaria and millet) were investigated in two long-term trials in Brazilian Oxisols (Ox-1 and Ox-2), and compared to soils under native Cerrado vegetation. Hedley’s P fractionation was performed in soil samples taken from 0 to 5, 5 to 10 and 10 to 20 cm depth layers and P fractions grouped by their predicted lability. Long-term cultivation generated large amounts of legacy P in the soil (184−341 mg kg−1) but only a small portion remained in labile fractions (11–16 %), with a slight increase in non-labile P (

AB - Crop rotation, cover crops introduction and no tillage adoption have improved tropical agriculture sustainability through improvements on soil conservation and water use efficiency. Soil fertility and topsoil phosphorus (P) accumulation is also altered by management, affecting P dynamics and its use for subsequent cash crops. Changes in soil P fractions promoted by no-tillage (NT) and conventional tillage (CT) in soybean/cotton crop systems with different cover crop rotations (fallow, maize as second crop, brachiaria and millet) were investigated in two long-term trials in Brazilian Oxisols (Ox-1 and Ox-2), and compared to soils under native Cerrado vegetation. Hedley’s P fractionation was performed in soil samples taken from 0 to 5, 5 to 10 and 10 to 20 cm depth layers and P fractions grouped by their predicted lability. Long-term cultivation generated large amounts of legacy P in the soil (184−341 mg kg−1) but only a small portion remained in labile fractions (11–16 %), with a slight increase in non-labile P (

U2 - 10.1016/j.still.2020.104770

DO - 10.1016/j.still.2020.104770

M3 - Article

SN - 0167-1987

VL - 205

JO - Soil & Tillage Research

JF - Soil & Tillage Research

M1 - 104770

ER -

Tillage systems and cover crops affecting soil phosphorus bioavailability in Brazilian Cerrado Oxisols

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