Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates
Field studies were established on the alluvial floodplain soils in Louisiana, from 2013 to 2015, to evaluate the effect of silicate slag applications on productivity of wheat (Triticum aestivum), under sufficient and high nitrogen (N) application rates. Treatments were arranged in a randomized compl...
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MDPI AG
2017-10-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/6/4/47 |
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| author | Brandon White Brenda S. Tubana Tapasya Babu Henry Mascagni Flavia Agostinho Lawrence E. Datnoff Steve Harrison |
| author_facet | Brandon White Brenda S. Tubana Tapasya Babu Henry Mascagni Flavia Agostinho Lawrence E. Datnoff Steve Harrison |
| author_sort | Brandon White |
| collection | DOAJ |
| description | Field studies were established on the alluvial floodplain soils in Louisiana, from 2013 to 2015, to evaluate the effect of silicate slag applications on productivity of wheat (Triticum aestivum), under sufficient and high nitrogen (N) application rates. Treatments were arranged in a randomized complete block design, with four replications consisting of twelve treatments: a factorial combination of two N (101 and 145 kg N ha−1) and five silicate slag rates (0, 1, 2, 4.5, and 9 Mg ha−1), and two control plots (with and without lime). Nitrogen had a greater impact on wheat productivity than silicate slag application. Wheat grain yield reached over 7000 kg ha−1 with applications of 145 kg N, and 9 Mg silicate slag per ha for soil having Si level <20 mg kg−1. Yield increases due to N or Si were attributed to the increase in number of spike m−2 and grain number spike−1. Silicate slag application effectively raised soil pH, and availability of several plant-essential nutrients, including plant-available N (nitrate, NO3−), demonstrating the benefits of slag application are beyond increasing plant-available Si. The benefits of silicate slag application were clearly observed in wheat supplied with high N, and on soil with low plant-available Si. |
| first_indexed | 2024-12-24T03:26:46Z |
| format | Article |
| id | doaj.art-ee72a4756b4b4c388f4aaf18e77b59b0 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-12-24T03:26:46Z |
| publishDate | 2017-10-01 |
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| spelling | doaj.art-ee72a4756b4b4c388f4aaf18e77b59b02022-12-21T17:17:20ZengMDPI AGPlants2223-77472017-10-01644710.3390/plants6040047plants6040047Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen RatesBrandon White0Brenda S. Tubana1Tapasya Babu2Henry Mascagni3Flavia Agostinho4Lawrence E. Datnoff5Steve Harrison6School of Plant, Environmental, and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA 70803, USASchool of Plant, Environmental, and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA 70803, USACompass Minerals Innovation Center, Stilwell, KS 66085, USANortheast Research Station, Louisiana State University AgCenter, St. Joseph, LA 71366, USASchool of Plant, Environmental, and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA 70803, USADepartment of Plant Pathology & Crop Physiology, Louisiana State University AgCenter, Baton Rouge, LA 70803, USASchool of Plant, Environmental, and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA 70803, USAField studies were established on the alluvial floodplain soils in Louisiana, from 2013 to 2015, to evaluate the effect of silicate slag applications on productivity of wheat (Triticum aestivum), under sufficient and high nitrogen (N) application rates. Treatments were arranged in a randomized complete block design, with four replications consisting of twelve treatments: a factorial combination of two N (101 and 145 kg N ha−1) and five silicate slag rates (0, 1, 2, 4.5, and 9 Mg ha−1), and two control plots (with and without lime). Nitrogen had a greater impact on wheat productivity than silicate slag application. Wheat grain yield reached over 7000 kg ha−1 with applications of 145 kg N, and 9 Mg silicate slag per ha for soil having Si level <20 mg kg−1. Yield increases due to N or Si were attributed to the increase in number of spike m−2 and grain number spike−1. Silicate slag application effectively raised soil pH, and availability of several plant-essential nutrients, including plant-available N (nitrate, NO3−), demonstrating the benefits of slag application are beyond increasing plant-available Si. The benefits of silicate slag application were clearly observed in wheat supplied with high N, and on soil with low plant-available Si.https://www.mdpi.com/2223-7747/6/4/47silicate slagsiliconnitrogenwheatgrain yieldsoil pHplant-essential nutrients |
| spellingShingle | Brandon White Brenda S. Tubana Tapasya Babu Henry Mascagni Flavia Agostinho Lawrence E. Datnoff Steve Harrison Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates Plants silicate slag silicon nitrogen wheat grain yield soil pH plant-essential nutrients |
| title | Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates |
| title_full | Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates |
| title_fullStr | Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates |
| title_full_unstemmed | Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates |
| title_short | Effect of Silicate Slag Application on Wheat Grown Under Two Nitrogen Rates |
| title_sort | effect of silicate slag application on wheat grown under two nitrogen rates |
| topic | silicate slag silicon nitrogen wheat grain yield soil pH plant-essential nutrients |
| url | https://www.mdpi.com/2223-7747/6/4/47 |
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