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| Registros recuperados: 27 | |
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| Fageria,Nand Kumar. |
| The objective of this work was to determine the influence of Zn, Mn and Cu on shoot dry matter yield and uptake of macro and micronutrients in upland rice, common bean and corn. Six greenhouse experiments were conducted using a Dark Red Latosol (Typic Haplusthox). Treatments consisted of application of Zn at 0, 5, 10, 20, 40, 80 and 120 mg kg-1, of Mn at 0, 10, 20, 40, 80, 160, 320 and 640 mg kg-1 and of Cu application at 0, 2, 4, 8, 32, 64 and 96 mg kg-1. Zinc increased yield of rice, Mn increased yields of corn and bean and Cu improved yields of rice and bean. Uptake of N, Ca, and Cu in rice was decreased by zinc treatment. In common bean, uptake of N, Mg, and Cu was increased by zinc application, whereas, uptake of P was decreased. Manganese increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado soils; Nutrient uptake; Cereal crops; Yields. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002001200013 |
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| Silva,Apolino José Nogueira da; Silva,Ricardo Alencar da; Santos,Juliana da Silva; Medeiros,Jordan Carlos Silva de; Carvalho,Fabíola Gomes de; Silva,Valéria Nogueira da; Oliveira,Cosme Jales de; Araújo,Afrânio César de; Silva,Luiz Eduardo Souza Fernandes da; Gomes Junior,Júlio. |
| The use of organic fertilizers and the inoculation of mycorrhizal fungi in the cultivation of oil crops is essential to reduce production costs and minimize negative impacts on natural resources. A field experiment was conducted in an Argissolo Amarelo (Ultisol) with the aim of evaluating the effects of fertilizer application and inoculation of arbuscular mycorrhizal fungi on the growth attributes of sunflower (Helianthus annuus L.) and on soil chemical properties. The experiment was conducted at the Federal University of Rio Grande do Norte, Brazil, using a randomized block design with three replicates in a 4 × 2 factorial arrangement consisting of four treatments in regard to application of organic fertilizer (liquid biofertilizer, cow urine, mineral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrient uptake; Ultisol; Organic fertilizers; Growth attributes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100151 |
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| Silva,João A. da; Donato,Sérgio L. R.; Donato,Paulo E. R.; Souza,Evilasio dos S.; Padilha Júnior,Milton C.; Silva Junior,Ancilon A. e. |
| ABSTRACT This work aimed to evaluate extraction/ export of nutrients and dry matter production in the 'Gigante' cactus pear, grown in different spacings and fertilizations 620 days after planting. Twelve combination of treatments were used consisting of: three spacings - 1.00 x 0.50; 2.00 x 0.25; and 3.00 x 1.00 x 0.25 m, and four fertilizations - 000-000-000; 000-150-000; 200-150-000; and 200-150-100, kg ha-1, of N, P2O5 and K2O, in a 3 x 4 factorial scheme in a randomized block design, with three replicates. Extraction/export of N, P, K, S, Ca, Mg, B, Fe, Mn, Zn, Na and Cu were determined and the means were 304.35; 18.81; 421.04; 62.35; 464.63; 215.77; 0.39; 0.81; 23.74; 1.11; 0.62 and 0.08 kg ha-1, besides the mean dry matter production of 17.11 Mg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Opuntia; Nutrient uptake; Concentration; NPK fertilization. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300236 |
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| Silva,Victor Maurício da; Teixeira,Alex Fabian Rabelo; Reis,Edvaldo Fialho dos; Mendonça,Eduardo de Sá. |
| The conilon coffee tree presents high yield potential, the replacement of soil nutrients usually being by the use of mineral fertilizers. To reduce these fertilizers, the use of organic waste may be an alternative. The objective of this study was to evaluate the effect of organic fertilizer systems on the nutritional status and yield of the conilon coffee tree. On a farm, located in the town of Linhares, Espirito Santo, during the agricultural year of 2009/2010, a trial was set up using a completely randomized block design with a factorial distribution of 2 x 2 x 5 and three replications, the factors being: organic compost (compost 1 and compost 2 ); legumes (the presence and absence of jack beans, sown between the rows of coffee trees); and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrient uptake; Compost; Legumes; Family farmer. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400014 |
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| Santos,Elcio Ferreira; Macedo,Fernando Giovannetti; Zanchim,Bruno José; Camacho,Marcos Antonio; Lavres,José. |
| ABSTRACT Jatropha seeds oil can replace fossil fuels, but the nutrient supply management for this species is not fully described. The objective with this work was to establish curves of macronutrient (nitrogen - N; phosphorus - P; potassium - K; calcium - Ca; magnesium - Mg and sulfur - S) content in leaves, stem and roots, and to evaluate the relative growth rate (RGR), absolute growth rate (AGR) and the foliar mass ratio (FMR). The experiment was arranged in completely randomized design with five replications. Jatropha plants were grown in nutrient solution and collected at intervals of 14 up to 119 days after treatments started. The period of highest uptake of nutrients occurred from 7 to 35 days after treatments started, which coincides with highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas; Nutrient uptake; Relative growth rate; Macronutrients uptake curves; Macronutrient uptake rates. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400565 |
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| Registros recuperados: 27 | |
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