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| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Test procedure for variable rate fertilizer on coffee - doi: 10.4025/actasciagron.v32i4.5282
Test procedure for variable rate fertilizer on coffee - doi: 10.4025/actasciagron.v32i4.5282
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| Autores: |
Molin, José Paulo; ESALQ - USP
Motomiya, Anamari Viegas de Araujo; Fundação Universidade Estadual de Mato Grosso do Sul – UEMS
Frasson, Flavia Roncato; Canamaq
Faulin, Gustavo Di Chiacchio; ESALQ - USP
Tosta, Wanderson; áquinas Agrícolas Jacto S.A.
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| Data: |
2010-12-01
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| Ano: |
2010
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| Palavras-chave: |
Mecanização agrícola
Fertilidade do solo e adubação precision agriculture
Yield map
Soil fertility 5.03.01.00-4
5.01.01.05-6 precision agriculture
Yield map
Soil fertility
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| Resumo: |
The objective was to develop and test a procedure for applying variable rates of fertilizers and evaluate yield response in coffee (Coffea arabica L.) with regard to the application of phosphorus and potassium. The work was conducted during the 2004 season in a 6.4 ha field located in central São Paulo state. Two treatments were applied with alternating strips of fixed and variable rates during the whole season: one following the fertilizing procedures recommended locally, and the other based on a grid soil sampling. A prototype pneumatic fertilizer applicator was used, carrying two conveyor belts, one for each row. Harvesting was done with a commercial harvester equipped with a customized volumetric yield monitor, separating the two treatments. Data were analyzed based on geostatistics, correlations and regressions. The procedure showed to be feasible and effective. The area that received fertilizer applications at a variable rate showed a 34% yield increase compared to the area that received a fixed rate. The variable rate fertilizer resulted in a savings of 23% in phosphate fertilizer and a 13% increase in potassium fertilizer, when compared to fixed rate fertilizer. Yield in 2005, the year after the variable rate treatments, still presented residual effect from treatments carried out during the previous cycle.
The objective was to develop and test a procedure for applying variable rates of fertilizers and evaluate yield response in coffee (Coffea arabica L.) with regard to the application of phosphorus and potassium. The work was conducted during the 2004 season in a 6.4 ha field located in central São Paulo state. Two treatments were applied with alternating strips of fixed and variable rates during the whole season: one following the fertilizing procedures recommended locally, and the other based on a grid soil sampling. A prototype pneumatic fertilizer applicator was used, carrying two conveyor belts, one for each row. Harvesting was done with a commercial harvester equipped with a customized volumetric yield monitor, separating the two treatments. Data were analyzed based on geostatistics, correlations and regressions. The procedure showed to be feasible and effective. The area that received fertilizer applications at a variable rate showed a 34% yield increase compared to the area that received a fixed rate. The variable rate fertilizer resulted in a savings of 23% in phosphate fertilizer and a 13% increase in potassium fertilizer, when compared to fixed rate fertilizer. Yield in 2005, the year after the variable rate treatments, still presented residual effect from treatments carried out during the previous cycle.
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5282
10.4025/actasciagron.v32i4.5282
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| Editor: |
Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/downloadSuppFile/5282/22407
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/downloadSuppFile/5282/0
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/downloadSuppFile/5282/22408
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; v. 32, n. 4 (2010); 569-575
Acta Scientiarum. Agronomy; v. 32, n. 4 (2010); 569-575
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Agronomy, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARACIÓN DE ORIGINALIDAD Y CESIÓN DE DERECHOS DE AUTOR Declaro que el presente artículo es original, no fue sometido a la publicación en cualquier otro periódico nacional o internacional, sea en parte o en su totalidad. Declaro, aun, que una vez publicado en la revista Acta Scientiarum. Agronomy, editado por la Universidad Estadual de Maringá, éste jamás será sometido por mí o por cualquier uno de los demás coautores a cualquier otro periódico. A través de este instrumento, en mi nombre y en nombre de los demás coautores, por ventura existentes, cedo los derechos de autor del referido artículo a la Universidad Estadual de Maringá y declaro estar informado de que la no observancia de este compromiso someterá al infractor las sanciones y penas previstas en la Ley de Protección de Derechos de Autor (Nº9609, de 19/02/98).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAISDeclaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Agronomy, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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