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	Provedor de dados Agrociencia (1) REA (1) AGRIAMBI (1) Autor Oliveira,Pedro D. de (3) Aviz,William L. C. de (1) Fernandes,Antonio Rodrigues (1) Gama,Cândido M. P. (1) Lima Junior,Joaquim A. de (1) Lima,Herdjania V. de (1) Lima,Herdjania Veras-de (1) Lucio,Francisco A. do Carmo (1) Ramos,Edson M. Leal Soares (1) Rodrigues,Sueli (1) Sato,Michel K. (1) Silva,André L. P. da (1) Mais... Palavra-chave Acmella oleracea (L.) R.K. (1) Critical soil bulk density (1) Degree of compaction (1) Dripping (1) Environmental susceptibility (1) Nitrogen fertilization (1) Principal function (1) Relative root length (1) Score standardization curves (1) Soil penetration resistance (1) Soil water retention curve (1) Tensiometry (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2020 (1) 2016 (1) 2014 (1) País Brazil (2) Mexico (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Physical and chemical soil quality index in irrigated acai plantations, eastern amazon, Brazil Agrociencia Lucio,Francisco A. do Carmo; Lima,Herdjania Veras-de; Fernandes,Antonio Rodrigues; Oliveira,Pedro D. de; Ramos,Edson M. Leal Soares. Knowledge of the soil quality in acai (Euterpe oleracea Mart.) plantations is very important to the northern region of Brazil because it is a native species with high economic value. The aim of this study was to evaluate the physical and chemical quality of a Yellow Latosol in an irrigated acai plantation by determining the soil quality index (SQI). the soil was classified as dystrophic Yellow Latosol with medium texture. The water retention curve and soil penetration resistance were determined using 45 undisturbed samples obtained at 0.1 and 0.3 m depth and distributed across two transects. For SQI determination, 15 soil quality indicators at a depth of 0.1 m were evaluated: soil bulk density (Bd); total porosity (TP); macroporosity (Map); penetration... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil water retention curve; Soil penetration resistance; Principal function; Score standardization curves; Environmental susceptibility. Ano: 2014 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000400002 PRODUCTIVITY OF IRRIGATED JAMBU UNDER SOIL-WATER STRESSES AND NITROGEN DOSES REA Aviz,William L. C. de; Lima Junior,Joaquim A. de; Silva,André L. P. da; Oliveira,Pedro D. de; Gama,Cândido M. P.. ABSTRACT Jambu (Acmella oleracea (L.) R.K.) is a short-cycle leafy vegetable from the Amazon region, which needs an adequate availability of water and nutrients, mainly nitrogen, to obtain a rapid mass increase. This research aimed to study the effect of different soil-water stresses and nitrogen doses on jambu cultivation in the state of Pará. The experiments were conducted at the Igarapé-Açu experimental farm of the Federal Rural University of Amazonia (UFRA). The Jamburana variety was used in a 10 × 10 cm spacing, using a randomized block design in a 4 × 4 factorial scheme with three replications. Each plot had a dimension of 0.4 × 0.5 m (0.2 m2), totaling 20 plants in 4 rows, but only the plants of the central rows were useful. Treatments consisted of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acmella oleracea (L.) R.K.; Tensiometry; Dripping; Nitrogen fertilization. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100016 S-index and soybean root growth in different soil textural classes AGRIAMBI Oliveira,Pedro D. de; Sato,Michel K.; Rodrigues,Sueli; Lima,Herdjania V. de. ABSTRACT This study tested the hypothesis that the limiting values of S-index, proposed in the literature can not be used to determine the degradation condition of soils under soybean cultivation in the state of Pará, Brazil. The objective was to determine limiting values of S-index using soil physical attributes and validate it with soybean root growth, in soils with different textural classes. For the experimental design, the following treatments were established: five compaction levels for sandy loam and sandy clay loam soils and three levels for clayey and very clayey soils. The following physical parameters were analysed: particle-size distribution, soil bulk density, critical soil bulk density, degree of compaction, soil-water retention curve,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Degree of compaction; Critical soil bulk density; Relative root length. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400329 Registros recuperados: 3 Primeira ... 1 ... Última

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