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11. Phosphate fertilization on soils with improved fertility in the Brazilian Cerrado

Author

Mariussi, Luís Marcelo, da Costa Leite, Rubson, Araújo de Freitas, Gilson, da Costa Leite, Robson, Martins dos Santos, Antônio Carlos, Santana da Silva Carneiro, Jefferson, and Ribeiro da Silva, Rubens

Subjects
foliar content, Glycine max L, adsorption of phosphorus, Glycine maxL, contenido foliar, adsorción de fósforo
Abstract

The practices of soil amendment and fertilization carried out over the years have allowed the improvement of the fertility in some of them in the Brazilian soils. The objective of this study was to evaluate the performance of soybean in response to phosphate fertilization in soil with improved fertility. The research was carried out during the 2015-2016 harvest season in a dry-land area in the municipality of São Desidério, Bahia. The experiment was arranged in randomized blocks, with five treatments and four replicates. Treatments were composed by doses of phosphate fertilizer (0, 70, 140, 210 and 280 kg P2O5 ha-1). The following variables were evaluated: plant height, height of insertion of the first pod, number of stems per plant, number of pods per plant, thousand grain weight, productivity, and the analysis of macro and micronutrients in the leaf. Soybean plants did not respond to phosphorus applied to soil with built fertility. Under the conditions of this study, phosphorus fertilization in soil with improved fertility did not promote productivity. Although the plants did not respond to foliar macro and micronutrients as a function of phosphate fertilization, there was no reduction of these in response to high doses. RESUMEN Las prácticas de corrección y fertilización realizadas a lo largo de los años en los suelos brasileños permitieron mejorar la fertilidad en algunos de ellos. El objetivo de este trabajo fue evaluar el desempeño de la soja en respuesta a la fertilización fosfatada en suelo con fertilidad mejorada. El trabajo fue realizado durante el cultivo 2015-2016 en el municipio de São Desidério, en Bahía. Se empleó un diseño experimental en bloques al azar, con cinco tratamientos y cuatro repeticiones. Los tratamientos fueron compuestos por dosis de fertilizante fosfatado (0, 70, 140, 210 y 280 kg ha-1 de P2O5). Se evaluaron las siguientes variables: altura de la planta, altura de inserción de la primera vaina, número de ramos por planta, número de vainas por planta, peso de mil granos, productividad y análisis de macro y micronutrientes en la hoja. Las plantas de soja no respondieron al fósforo aplicado en el suelo con fertilidad mejorada. En las condiciones de este trabajo, la fertilización fosfatada en suelo con fertilidad mejorada no promovió ganancia de productividad. Aunque las plantas no respondieron a los macro y micronutrientes foliares en función de la fertilización fosfatada, no hubo reducción de estos niveles en respuesta a las dosis elevadas.

Published
2019

15. Adubação fosfatada na soja durante três safras consecutivas na nova fronteira agrícola Brasileira

Author

Santana da Silva Carneiro, Jefferson, Ribeiro da Silva, Rubens, Araújo de Freitas, Gilson, Casali, Michel Elias, Da Costa Leite, Rubson, Santana da Silva Carneiro, Jefferson, Ribeiro da Silva, Rubens, Araújo de Freitas, Gilson, Casali, Michel Elias, and Da Costa Leite, Rubson

Abstract

Comprised of the Cerrado biome, the MATOPIBA region, comprising the states of Maranhão, Tocantins, Piauí and Bahia, the most recent Brazilian agricultural frontier, accounts for 11.96% of the area planted with soybeans in the country. Due to the importance of phosphatic fertilization of soils with great agricultural potential for the country, the objective of this work was to evaluate the effect of phosphate fertilizer on soybeans during three consecutive harvests. The experiment was carried out in a newly opened area for soybean production at the Lazzari farm, in the municipality of Formosa do Rio Preto-BA, in the seasons 2013/2014, 2014/2015 and 2015/2016. The experimental design was a randomized complete block design with five treatments and five replicates, using the doses of 0, 100, 200, 300 and 400 kg ha-1 of P2O5 with Top-Phos® fertilizer. Increasing doses of phosphate fertilization had a positive influence on plant height, number of pods per plant and soil productivity under Brazilian cerrado. In extreme conditions of water deficit, the soybean plants responded only to the height parameter of plants, not having influence of the other parameters in these conditions., Compreendida pelo bioma Cerrado, a região do MATOPIBA, composta pelos estados do Maranhão, Tocantins, Piauí e Bahia, denominada a mais recente fronteira agrícola brasileira, é responsável por 11,96 % da área plantada com soja no país. Mediante a importância da fertilização fosfatada de solos com grande potencial agrícola para o país, o presente trabalho teve como objetivo avaliar o efeito de fertilizante fosfatado na soja durante três safras seguidas. O experimento foi realizado em área recém-aberta para produção de soja na fazenda Lazzari, no município de Formosa do Rio Preto-BA, nas safras 2013/2014, 2014/2015 e 2015/2016. O delineamento experimental foi em blocos casualizados, com cinco tratamentos e cinco repetições, através das doses de 0, 100, 200, 300 e 400 kg ha-1 de P2O5 com fertilizante Top-Phos®. Doses crescentes de adubação fosfatada tem influência positiva sobre os parâmetros altura de plantas, número de vagens por planta e produtividade em solo sob cerrado brasileiro. Em condições extremas de déficit hídrico, as plantas de soja respondem apenas para o parâmetro altura de plantas, não havendo influência dos outros parâmetros nessas condições.

Published
2017

16. Phosphate fertilization on soils with improved fertility in the Brazilian Cerrado.

Author

Marcelo Mariussi, Luís, da Costa Leite, Rubson, de Freitas, Gilson Araújo, dos Santos, Antônio Carlos Martins, da Silva Carneiro, Jefferson Santana, and da Silva, Rubens Ribeiro

Subjects
PHOSPHATE fertilizers, SOIL fertility, SOIL amendments, SOYBEAN farming, AGRICULTURAL productivity
Abstract

Copyright of Agronomía Colombiana is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019
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17. Farinha de carne e ossos e adubação de cobertura na produtividade de capim Mombaça.

Author

da Costa LEITE, Rubson, da SILVA, Rubens Ribeiro, da Costa LEITE, Robson, da Silva CARNEIRO, Jefferson Santana, de FARIA, Álvaro José Gomes, and de FREITAS, Gilson Araújo

Abstract

Copyright of Nativa is the property of Revista Nativa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019
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18. Methods for overcoming dormancy in teak diaspores.

Author

de Sousa Soares, Guilherme Octávio, da Silva Júnior, Gerson Dias, da Costa Leite, Rubson, da Silva Reis, Amanda, de Sousa Soares, José Lucas, and Pereira Leite, Marcio Rogério

Subjects
DORMANCY in plants, TEAK, GERMINATION, SEEDLING quality, SOWING
Abstract

Copyright of Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical is the property of Pesquisa Agropecuaria Tropical and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2017
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