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Journals / Eurasian Journal of Soil Science / 2021 / Cilt: 10 - Sayı: 1

Phosphorus mineralization in response to organic and inorganic amendment in a semi-arid pasture soil

Shahab Ahmad KHOSA
Kehinde O. ERNİLE
Khalid Saifullah KHAN
Muhammad AKMAL
Pages
26–31
Publication Date
2021-01-01
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was concluded that compost amended with high inorganic P stimulated the formation of P labile pools which supply long term slow release of P for plants and microbes.

📌 3 Key Takeaways

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Objective & Hypothesis:Phosphorus deficient soil was amended with compost (C) (organic source of phosphorus) and inorganic P (KH2PO4 as inorganic phosphorus) at different rates and incubated for 28 days.
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Key Findings & Data:Six treatments were used including i) Control ii) Inorganic P (0.79 mg per 30 g of soil sample) iii) 100 % C (0.13 g) iv) 75% C (0.1 g) + 25% P (0.2 mg) v) 50% C (0.065 g) + 50% P (0.4 mg) vi) 25% C (0.03 g) + 75% P (0.6 mg).
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Conclusion & Impact:It was concluded that compost amended with high inorganic P stimulated the formation of P labile pools which supply long term slow release of P for plants and microbes.
🔬Design:Lab & Field Experiment
📍Scope:Comprehensive Sample
⚙️Variables:Compost · microbial dynamic · phosphorus pools

Abstract

Phosphorus deficient soil was amended with compost (C) (organic source of phosphorus) and inorganic P (KH2PO4 as inorganic phosphorus) at different rates and incubated for 28 days. Six treatments were used including i) Control ii) Inorganic P (0.79 mg per 30 g of soil sample) iii) 100 % C (0.13 g) iv) 75% C (0.1 g) + 25% P (0.2 mg) v) 50% C (0.065 g) + 50% P (0.4 mg) vi) 25% C (0.03 g) + 75% P (0.6 mg). Soil respiration was recorded using Infra-red CO2 gas analyzer. MBC was determined by using fumigation extraction method. Resin P and MBP extraction was carried out by anion exchange membranes and was determined colorimetrically. P pools were determined by using DeLuca method. Cumulative respiration microbial biomass significantly increased in organic amended soil with higher increase in soil emended with 75% C +25% P rate followed by 50% C and 50% P rate. It was concluded that compost amended with high inorganic P stimulated the formation of P labile pools which supply long term slow release of P for plants and microbes.

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Cite This Article

KHOSA, S. A., ERNİLE, K. O., KHAN, K. S., AKMAL, M. (2021). Phosphorus mineralization in response to organic and inorganic amendment in a semi-arid pasture soil. Eurasian Journal of Soil Science, Cilt: 10 - Sayı: 1, 26–31. https://ajindex.com/articles/756445

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