Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer

Detalhes bibliográficos
Autor(a) principal: Bley, Henrique
Data de Publicação: 2017
Outros Autores: Gianello, Clesio, Santos, Lenio da Silva, Selau, Lisiane Priscila Roldão
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/159371
Resumo: The increase in food consumption and limitations in food production areas requires improved fertilizer efficiency. Slow- or controlled-release fertilizers are an alternative for synchronizing nutrient availability with the plant demands, reducing losses to the environment. The aim of this study was to evaluate the efficacy of polymer-coated KCl compared with conventional KCl. The products were incubated in soil under controlled conditions to evaluate the time required for nutrient release. A greenhouse experiment was performed with corn plants in pots with loamy sand- or clay-textured soil types to evaluate plant nutrition and losses due to leaching. The K application rates were 0, 18, 36, and 54 mg dm-3. The pots were irrigated, and the percolated liquid was collected. The plants were harvested 30 days after sowing to quantify dry matter (DM) and its K content. In the incubation study, the K release from the coated fertilizer was found to be 42 % over 154 days. The data were fit to a linear function from which a period of 315 days was estimated as required for the release of 75 % of the nutrient. Meanwhile, conventional KCl releases 85 % of the K nutrient in the first 48h. In the cultivation of plants in pots, the coating reduced K losses due to leaching in the loamy sand soil; however, only the application rate of 54 mg dm-3 promoted DM production equivalent to conventional KCl. It is possible that the need for K in the early stages of corn development was not met by a coated KCl.
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spelling Bley, HenriqueGianello, ClesioSantos, Lenio da SilvaSelau, Lisiane Priscila Roldão2017-06-08T02:31:35Z20170100-0683http://hdl.handle.net/10183/159371001015720The increase in food consumption and limitations in food production areas requires improved fertilizer efficiency. Slow- or controlled-release fertilizers are an alternative for synchronizing nutrient availability with the plant demands, reducing losses to the environment. The aim of this study was to evaluate the efficacy of polymer-coated KCl compared with conventional KCl. The products were incubated in soil under controlled conditions to evaluate the time required for nutrient release. A greenhouse experiment was performed with corn plants in pots with loamy sand- or clay-textured soil types to evaluate plant nutrition and losses due to leaching. The K application rates were 0, 18, 36, and 54 mg dm-3. The pots were irrigated, and the percolated liquid was collected. The plants were harvested 30 days after sowing to quantify dry matter (DM) and its K content. In the incubation study, the K release from the coated fertilizer was found to be 42 % over 154 days. The data were fit to a linear function from which a period of 315 days was estimated as required for the release of 75 % of the nutrient. Meanwhile, conventional KCl releases 85 % of the K nutrient in the first 48h. In the cultivation of plants in pots, the coating reduced K losses due to leaching in the loamy sand soil; however, only the application rate of 54 mg dm-3 promoted DM production equivalent to conventional KCl. It is possible that the need for K in the early stages of corn development was not met by a coated KCl.application/pdfengRevista brasileira de ciencia do solo. Viçosa. Vol. 41 (2017), [art.] e0160142Nutricao vegetalLixiviaçãoEnhanced efficiencySlow- or controlled-releaseLeachingNutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizerinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001015720.pdf001015720.pdfTexto completo (inglês)application/pdf512456http://www.lume.ufrgs.br/bitstream/10183/159371/1/001015720.pdf229c0dd5c25c4978ddb09b7478f061ceMD51TEXT001015720.pdf.txt001015720.pdf.txtExtracted Texttext/plain37836http://www.lume.ufrgs.br/bitstream/10183/159371/2/001015720.pdf.txt8d7818f4a25068538b76582d70d5b05dMD52THUMBNAIL001015720.pdf.jpg001015720.pdf.jpgGenerated Thumbnailimage/jpeg1822http://www.lume.ufrgs.br/bitstream/10183/159371/3/001015720.pdf.jpgff97a37589d9ad1760f6a886c1aaf56cMD5310183/1593712021-09-18 04:46:21.952246oai:www.lume.ufrgs.br:10183/159371Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-09-18T07:46:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
title Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
spellingShingle Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
Bley, Henrique
Nutricao vegetal
Lixiviação
Enhanced efficiency
Slow- or controlled-release
Leaching
title_short Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
title_full Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
title_fullStr Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
title_full_unstemmed Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
title_sort Nutrient release, plant nutrition, and potassium leaching from polymer-coated fertilizer
author Bley, Henrique
author_facet Bley, Henrique
Gianello, Clesio
Santos, Lenio da Silva
Selau, Lisiane Priscila Roldão
author_role author
author2 Gianello, Clesio
Santos, Lenio da Silva
Selau, Lisiane Priscila Roldão
author2_role author
author
author
dc.contributor.author.fl_str_mv Bley, Henrique
Gianello, Clesio
Santos, Lenio da Silva
Selau, Lisiane Priscila Roldão
dc.subject.por.fl_str_mv Nutricao vegetal
Lixiviação
topic Nutricao vegetal
Lixiviação
Enhanced efficiency
Slow- or controlled-release
Leaching
dc.subject.eng.fl_str_mv Enhanced efficiency
Slow- or controlled-release
Leaching
description The increase in food consumption and limitations in food production areas requires improved fertilizer efficiency. Slow- or controlled-release fertilizers are an alternative for synchronizing nutrient availability with the plant demands, reducing losses to the environment. The aim of this study was to evaluate the efficacy of polymer-coated KCl compared with conventional KCl. The products were incubated in soil under controlled conditions to evaluate the time required for nutrient release. A greenhouse experiment was performed with corn plants in pots with loamy sand- or clay-textured soil types to evaluate plant nutrition and losses due to leaching. The K application rates were 0, 18, 36, and 54 mg dm-3. The pots were irrigated, and the percolated liquid was collected. The plants were harvested 30 days after sowing to quantify dry matter (DM) and its K content. In the incubation study, the K release from the coated fertilizer was found to be 42 % over 154 days. The data were fit to a linear function from which a period of 315 days was estimated as required for the release of 75 % of the nutrient. Meanwhile, conventional KCl releases 85 % of the K nutrient in the first 48h. In the cultivation of plants in pots, the coating reduced K losses due to leaching in the loamy sand soil; however, only the application rate of 54 mg dm-3 promoted DM production equivalent to conventional KCl. It is possible that the need for K in the early stages of corn development was not met by a coated KCl.
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