acúmulo e exportação de nutrientes em beterraba accumulation and exportation of nutrients in beet crop

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ID: 249134
2007
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Abstract
O objetivo do presente trabalho foi determinar o acúmulo e exportação de nutrientes pela cultura da beterraba em condições de altas temperaturas e luminosidade. O delineamento experimental utilizado foi em blocos casualizados completos com quatro repetições, sendo os tratamentos constituídos pelas épocas de coleta de plantas (20, 30, 40, 50 e 60 dias após semeadura). Em cada coleta foram utilizadas quatro plantas por repetição. O máximo acúmulo de massa seca ocorreu aos 60 DAS, sendo de 21,35 g/planta. A maior demanda de nutriente aconteceu no período de 50 a 60 DAS para N e Mg, 30 a 50 DAS para P, 30 a 40 para K e 40 a 50 DAS para Ca. A ordem decrescente dos nutrientes acumulados pela beterraba foi: N, K, Mg, Ca e P. As quantidades totais de N, P, K, Ca e Mg exportadas pelas raízes foram respectivamente de 88,0; 6,1; 93,2; 12,1 e 16,8 kg/ha.
The objective of this research was to determine on field condition the accumulation and exportation of nutrients by beet crop in conditions of high temperatures and radiations intensity. The experimental design was fully randomized blocks, with four replications. The treatments consisted of the sampling times (20, 30, 40, 50 and 60 days after sowing (DAS). The maximum accumulation of dry mass occurred at 60 DAS, being of 21.35 g/plant. The period of higher demand for N and Mg occurred from 50 to 60 DAS, 30 the 50 DAT for P, 30 the 40 for K and 40 the 50 for Ca. The decreasing order of nutrient accumulation by the beet crop was: N, K, Mg, Ca and P. The roots exported 88.0 kg/ha of N; 6.1 kg/ha of P; 93.1 kg/ha of K; 12.1 kg/ha of Ca and 16.8 kg/ha of Mg.
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grangeiro2007cinciaacmulo Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Leilson Costa Grangeiro;Maria Zuleide de Negreiros;Brígida Savana de Souza;Pascalle Escóssia de Azevêdo;Stênio Lima de Oliveira;Maria Aparecida de Medeiros
Journal information and software technology
Year 2007
DOI
10.1590/S1413-70542007000200001
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000200001
Keywords
plant nutrition growthagriculture (general)

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