1967
DOI: 10.1590/s0071-12761967000100029
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Efeito de concentrações de macronutrientes N, P e K No aumento do espessamento da parede dos traqueídos Pinnus Elliottii (plantas em vasos)

Abstract: RESUMONeste trabalho os autores apresentam os resultados dos efeitos dos níveis de N, P e K no aumento do comprimento e da espessura da parede dos traqueídos de Pinnus elliottii.A análise estatística mostra que alto nível de N pare¬ ce indicar uma diminuição no comprimento e na espessura dos tra¬ queídos, enquanto que os efeitos do P e K não se mostram bem de¬ finidos, provàvelmente por se tratar de material muito jovem, com apenas dois anos de idade, sob efeito dos tratamentos. INTRODUÇÃORecentemente, numeros… Show more

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“…Nitrogen had little effect on fibre wall thickness in this study as in other N and NP fertilizer studies (Williams & Hamilton 1961;Youngberg et al 1963). These fertilizers reduced fibre wall thickness in other studies (Orman & Harris 1963;Santos et al 1967;Siddiqui et al 1971). Some studies found a decrease of between 6-14% following P or NP fertilizer application (Williams & Hamilton 1961;Posey 1964) and yet others an increase of around 12% following K fertilizer application (Gray & Kyanka 1974).…”
Section: Fibre Wall Thicknessmentioning
confidence: 52%
“…Nitrogen had little effect on fibre wall thickness in this study as in other N and NP fertilizer studies (Williams & Hamilton 1961;Youngberg et al 1963). These fertilizers reduced fibre wall thickness in other studies (Orman & Harris 1963;Santos et al 1967;Siddiqui et al 1971). Some studies found a decrease of between 6-14% following P or NP fertilizer application (Williams & Hamilton 1961;Posey 1964) and yet others an increase of around 12% following K fertilizer application (Gray & Kyanka 1974).…”
Section: Fibre Wall Thicknessmentioning
confidence: 52%