Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition
Abstract Nutrients’ mineralization‐immobilization in soil is crucial for their management in crop production. An incubation experiment was conducted to study the effects of phosphorus levels on mineralization of phosphorus (P) and potassium (K) under three soil types in laboratory conditions at the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Agrosystems, Geosciences & Environment |
| Online Access: | https://doi.org/10.1002/agg2.20229 |
| _version_ | 1818957660617179136 |
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| author | Nabin Rawal Keshab Raj Pande Renuka Shrestha Shree Prasad Vista |
| author_facet | Nabin Rawal Keshab Raj Pande Renuka Shrestha Shree Prasad Vista |
| author_sort | Nabin Rawal |
| collection | DOAJ |
| description | Abstract Nutrients’ mineralization‐immobilization in soil is crucial for their management in crop production. An incubation experiment was conducted to study the effects of phosphorus levels on mineralization of phosphorus (P) and potassium (K) under three soil types in laboratory conditions at the National Soil Science Research Center in Nepal with 3 × 4 factorial completely randomized design. Two factors were three soil types (silty clay loam, loam, and sandy loam) and four P levels: 0, 25, 50, and 75 kg P2O5 ha–1. Five incubation periods (1, 30, 60, 90, and 120 d after incubation) were replicated three times with total of 180 experimental units. The P and K mineralization patterns varied with soil types and P levels, with higher fluctuation of P content in silty clay loam soil as compared with loam and sandy loam soil. Phosphorus concentration with application of 25 kg, 50 kg, and 75 kg P2O5 ha–1 after 120 d of incubation were 95.6, 112.2, and 116.6 mg kg–1, respectively, which was 19.65% (25 kg P2O5 ha–1) to 45.93% (75 kg P2O5 ha–1) higher than control. There were four stages of mineralization‐immobilization turnover of Olsen‐P and available K: rapid declining trend up to 30 d, slow rise up to 60 d, rapid mineralization up to 90 d, and then slows down up to 120 d. On average, rapid reduction in soil pH from 6.60 to 5.42 was observed within 120 d of incubation. The study of mineralization of PK and change in pH during incubation could be helpful for predicting nutrient availability and requirement time for crops. |
| first_indexed | 2024-12-20T11:13:23Z |
| format | Article |
| id | doaj.art-d7ed82d8b40e4234929f9a8263a46112 |
| institution | Directory Open Access Journal |
| issn | 2639-6696 |
| language | English |
| last_indexed | 2024-12-20T11:13:23Z |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Agrosystems, Geosciences & Environment |
| spelling | doaj.art-d7ed82d8b40e4234929f9a8263a461122022-12-21T19:42:41ZengWileyAgrosystems, Geosciences & Environment2639-66962022-01-0151n/an/a10.1002/agg2.20229Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory conditionNabin Rawal0Keshab Raj Pande1Renuka Shrestha2Shree Prasad Vista3Dep. of Soil Science and Agri‐engineering Agriculture and Forestry Univ. Rampur Chitwan NepalDep. of Soil Science and Agri‐engineering Agriculture and Forestry Univ. Rampur Chitwan NepalNational Agronomy Research Center Nepal Agricultural Research Council Lalitpur NepalNational Soil Science Research Center Nepal Agricultural Research Council Khumaltar, Lalitpur NepalAbstract Nutrients’ mineralization‐immobilization in soil is crucial for their management in crop production. An incubation experiment was conducted to study the effects of phosphorus levels on mineralization of phosphorus (P) and potassium (K) under three soil types in laboratory conditions at the National Soil Science Research Center in Nepal with 3 × 4 factorial completely randomized design. Two factors were three soil types (silty clay loam, loam, and sandy loam) and four P levels: 0, 25, 50, and 75 kg P2O5 ha–1. Five incubation periods (1, 30, 60, 90, and 120 d after incubation) were replicated three times with total of 180 experimental units. The P and K mineralization patterns varied with soil types and P levels, with higher fluctuation of P content in silty clay loam soil as compared with loam and sandy loam soil. Phosphorus concentration with application of 25 kg, 50 kg, and 75 kg P2O5 ha–1 after 120 d of incubation were 95.6, 112.2, and 116.6 mg kg–1, respectively, which was 19.65% (25 kg P2O5 ha–1) to 45.93% (75 kg P2O5 ha–1) higher than control. There were four stages of mineralization‐immobilization turnover of Olsen‐P and available K: rapid declining trend up to 30 d, slow rise up to 60 d, rapid mineralization up to 90 d, and then slows down up to 120 d. On average, rapid reduction in soil pH from 6.60 to 5.42 was observed within 120 d of incubation. The study of mineralization of PK and change in pH during incubation could be helpful for predicting nutrient availability and requirement time for crops.https://doi.org/10.1002/agg2.20229 |
| spellingShingle | Nabin Rawal Keshab Raj Pande Renuka Shrestha Shree Prasad Vista Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition Agrosystems, Geosciences & Environment |
| title | Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| title_full | Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| title_fullStr | Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| title_full_unstemmed | Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| title_short | Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| title_sort | phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition |
| url | https://doi.org/10.1002/agg2.20229 |
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