Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity
ABSTRACT Increasingly rational use of phosphate fertilizers by agriculture is important, especially in Brazil, due to its importance for global food security and its high dependence on phosphate fertilizers for crop production. Thus, correlation and calibration researches with soil available phospho...
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Sociedade Brasileira de Ciência do Solo
2020-04-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832020000100504&tlng=en |
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| author | Josimar Vieira dos Reis Víctor Hugo V. Alvarez Renan Dinardi Durigan Rodrigo Bazzarella Paulucio Reinaldo Bertola Cantarutti |
| author_facet | Josimar Vieira dos Reis Víctor Hugo V. Alvarez Renan Dinardi Durigan Rodrigo Bazzarella Paulucio Reinaldo Bertola Cantarutti |
| author_sort | Josimar Vieira dos Reis |
| collection | DOAJ |
| description | ABSTRACT Increasingly rational use of phosphate fertilizers by agriculture is important, especially in Brazil, due to its importance for global food security and its high dependence on phosphate fertilizers for crop production. Thus, correlation and calibration researches with soil available phosphorus (P) extractants to improve the recommendation and the use of P are extremely important. Our objectives were (i) to determine soil P recovery rates and critical levels by the extractants Mehlich-1 (M1), Mehlich-3 (M3), and Ion Exchange Resin (RTI); (ii) to adjust predictive models of P recovery rates and critical levels for each extractant, as a function of soil properties related to the soil P buffer capacity, and (iii) to adjust the an interpretation table of soil P availability by M3 taking into account soil P buffer capacity indices. A pot experiment under greenhouse condition was conducted, in which the treatments were generated by the combination of a factorial 12 × 6, being 12 soil samples collected at a layer of 0.00-0.20 m, and six doses of P. The experimental units were constituted by plastic pots with capacity for 2.0 dm3 of soil, in which four hybrid corn plants (Zea mays L.) were cultivated for 45 d. The experimental design was a randomized complete block with four replicates. After cultivation, soil samples were collected from each experimental unit, and the determination of soil available P was performed by the extractants. The remaining P and the clay content were the soil properties that best correlated with the P recovery rates and P critical levels in the soil by the M1 and M3. The IER did not show sensitivity to soil P buffer capacity. The M3 had a discontinuous loss of extraction capacity with increasing soil P buffer capacity. Therefore, it is recommended the use of M3 as P extractant in soils with different characteristics, but a measure of soil P buffer capacity such as remaining P or clay content have to be used. |
| first_indexed | 2024-12-20T09:36:52Z |
| format | Article |
| id | doaj.art-43182062fff04b78a4460423f32e9150 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-20T09:36:52Z |
| publishDate | 2020-04-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-43182062fff04b78a4460423f32e91502022-12-21T19:44:59ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572020-04-014410.36783/18069657rbcs20190113Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacityJosimar Vieira dos Reishttps://orcid.org/0000-0003-2739-9165Víctor Hugo V. Alvarezhttps://orcid.org/0000-0002-9941-1074Renan Dinardi Duriganhttps://orcid.org/0000-0002-8407-2292Rodrigo Bazzarella Pauluciohttps://orcid.org/0000-0003-4333-0766Reinaldo Bertola Cantaruttihttps://orcid.org/0000-0002-4360-0247ABSTRACT Increasingly rational use of phosphate fertilizers by agriculture is important, especially in Brazil, due to its importance for global food security and its high dependence on phosphate fertilizers for crop production. Thus, correlation and calibration researches with soil available phosphorus (P) extractants to improve the recommendation and the use of P are extremely important. Our objectives were (i) to determine soil P recovery rates and critical levels by the extractants Mehlich-1 (M1), Mehlich-3 (M3), and Ion Exchange Resin (RTI); (ii) to adjust predictive models of P recovery rates and critical levels for each extractant, as a function of soil properties related to the soil P buffer capacity, and (iii) to adjust the an interpretation table of soil P availability by M3 taking into account soil P buffer capacity indices. A pot experiment under greenhouse condition was conducted, in which the treatments were generated by the combination of a factorial 12 × 6, being 12 soil samples collected at a layer of 0.00-0.20 m, and six doses of P. The experimental units were constituted by plastic pots with capacity for 2.0 dm3 of soil, in which four hybrid corn plants (Zea mays L.) were cultivated for 45 d. The experimental design was a randomized complete block with four replicates. After cultivation, soil samples were collected from each experimental unit, and the determination of soil available P was performed by the extractants. The remaining P and the clay content were the soil properties that best correlated with the P recovery rates and P critical levels in the soil by the M1 and M3. The IER did not show sensitivity to soil P buffer capacity. The M3 had a discontinuous loss of extraction capacity with increasing soil P buffer capacity. Therefore, it is recommended the use of M3 as P extractant in soils with different characteristics, but a measure of soil P buffer capacity such as remaining P or clay content have to be used.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832020000100504&tlng=encritical levelrecovery ratesmethods of soil analysis |
| spellingShingle | Josimar Vieira dos Reis Víctor Hugo V. Alvarez Renan Dinardi Durigan Rodrigo Bazzarella Paulucio Reinaldo Bertola Cantarutti Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity Revista Brasileira de Ciência do Solo critical level recovery rates methods of soil analysis |
| title | Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity |
| title_full | Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity |
| title_fullStr | Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity |
| title_full_unstemmed | Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity |
| title_short | Interpretation of soil phosphorus availability by Mehlich-3 in soils with contrasting phosphorus buffering capacity |
| title_sort | interpretation of soil phosphorus availability by mehlich 3 in soils with contrasting phosphorus buffering capacity |
| topic | critical level recovery rates methods of soil analysis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832020000100504&tlng=en |
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