Effect of Different Tillage Managements on Soil Organic Phosphorus Forms

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MOHAMMADI ZOHREH; Barani Motlagh Mojtaba; Asadi Mohammad Esmaeil; Movahedi Naeini Seyed Alireza; Sefidgar Shahkolaie Somayeh

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Journal: APPLIED SOIL RESEARCH Year:2019 | Volume:6 | Issue:4 Page(s): 45-57

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Title

Effect of Different Tillage Managements on Soil Organic Phosphorus Forms

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Keywords

Conservation agricultureQ1

Conventional tillageQ2

Organic P.Q2

Phosphorus formsQ1

Sequential extractionQ1

Abstract

Changes in management practices like different soil tillage and keeping crop residues can be alter phosphorus (P) dynamics and increased P bioavailability. Conservation agriculture (CA), which reduces soil disturbance and keeps crop residues on the soil surface, affects the cycle and stratification of soil P, resulting a high P concentration in the upper layers of the soil. The objective of this study was to determine the changes in Organic P.fractions in a soil under different tillage managements using a Sequential extraction procedure. The experimental design was a completely randomized block design (CRBD) with 5 replications. Tillage treatments were: Conventional tillage (CT), Raised Bed system (RB), Minimum Tillage (MT) and No-Tillage (NT) systems. Soil samples were taken from the 0– 8 and 8-16 centimeters depths at all four tillage treatments. Organic P.pools were fractionated at each depth using modified Bowman and Cole (1978) procedure. The results showed that the change in soil tillage from CT to CA (Raised Bed Tillage (RB), Minimum Tillage (MT) and No-Tillage (NT)) significantly increased the amount of all Organic P.forms (labile P, moderately labile P, and non-labile, residual P). Also, the P concentration of wheat grain in MT and NT showed increments about 35% rather than the CT. In addition, the wheat grain yield was the highest in the MT and increased about 21% rather than to CT. The results of this research showed that low soil disturbance under NT has changed the concentration and distribution of P in the soil, leading to the establishment a P concentration gradient that decreases with soil depth. Conversely, under CT systems incorporation of plant residues within the soil plough layer increases the organic matter decomposition rate and reduces the storage of labile and moderately labile Organic P.fractions.

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APA: Copy

MOHAMMADI, ZOHREH, Barani Motlagh, Mojtaba, Asadi, Mohammad Esmaeil, Movahedi Naeini, Seyed Alireza, & Sefidgar Shahkolaie, Somayeh. (2019). Effect of Different Tillage Managements on Soil Organic Phosphorus Forms. APPLIED SOIL RESEARCH, 6(4 ), 45-57. SID. https://sid.ir/paper/261831/en

Vancouver: Copy

MOHAMMADI ZOHREH, Barani Motlagh Mojtaba, Asadi Mohammad Esmaeil, Movahedi Naeini Seyed Alireza, Sefidgar Shahkolaie Somayeh. Effect of Different Tillage Managements on Soil Organic Phosphorus Forms. APPLIED SOIL RESEARCH[Internet]. 2019;6(4 ):45-57. Available from: https://sid.ir/paper/261831/en

IEEE: Copy

ZOHREH MOHAMMADI, Mojtaba Barani Motlagh, Mohammad Esmaeil Asadi, Seyed Alireza Movahedi Naeini, and Somayeh Sefidgar Shahkolaie, “Effect of Different Tillage Managements on Soil Organic Phosphorus Forms,” APPLIED SOIL RESEARCH, vol. 6, no. 4 , pp. 45–57, 2019, [Online]. Available: https://sid.ir/paper/261831/en

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