análise de crescimento de mamona semeada em diferentes épocas growth of castor sown at different times

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ID: 214993
2011
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Abstract
O objetivo deste trabalho foi estudar os efeitos dos fatores externos no crescimento, desenvolvimento e na produtividade da planta de mamona. O experimento foi realizado com a cultivar 'BRS Energia' semeada em três épocas nas safras 2008/09 e 2009/10 em Pelotas - RS. As variáveis avaliadas foram a taxa de crescimento relativo (TCR), taxa assimilatória líquida (TAL), produtividade e as principais variáveis meteorológicas. A maior taxa de crescimento relativo e assimilatória líquida ocorre nos períodos de temperatura média de 22,5 a 25,7°C e insolação média diária maior que seis horas, que coincidem com as semeaduras de novembro e dezembro na região de Pelotas, enquanto as maiores produtividades ocorrem nas semeaduras de outubro e novembro.
The objective was to study external effects on growth, development and plant productivity. The experiment was conducted with 'BRS Energia' sown at three times in 2008/09 and 2009/10 seasons in Pelotas, Southern Brazil. It was evaluated the relative growth rate (RGR), net assimilation rate (NAR), yield and the main meteorological variables. The highest relative growth rate and net assimilation rate occurred at an average temperature of 22.5 to 25.7°C and average daily insolation greater than six hours, which coincide with November and December sowings in Southern Brazil. The highest yields were observed in October and November sowings.
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Authors ;Rogério Ferreira Aires;Sérgio Delmar dos Anjos e Silva;Eberson Diedrich Eicholz
Journal Trials
Year 2011
DOI
DOI not found
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000800009
Keywords
ricinus communis relative growth rate

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