El efecto de las deficiencias de potasio, calcio y magnesio sobre los constituyentes intermediarios de nitrógeno en las hojas de cacao

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dc.creatorMachicado, Marcial
dc.creatorBoynton, Damon
dc.date2025-08-29T15:30:54Z
dc.date2025-08-29T15:30:54Z
dc.date1961-10-01
dc.date.accessioned2026-06-09T02:17:18Z
dc.descriptionThis investigation determined the soluble nitrogenous compounds in leaves of cocoa seedlings at three different ages, grown under conditions of K, Ca and Mg deficiencies, and combinations of these deficiencies. Under greenhouse conditions the plants were grown in sand with nutrient solutions. At the end of four, months, samples of 30, 60 and 90 day old leaves were taken and analized for soluble nitrogenous compounds using two directional paper chromatography. The effect of leaf age was the following: For total soluble N there was no significant difference between the means of 30 and 60 day old leaves but the means for 90 day old leaves, were higher than those of either younger age. The effect of the treatments was a follows: In general the lack of K and Mg caused the accumulation of intermediary nitrogenous compounds: the lack of Ca did not have such influence. Asparagine was responsible for much of this accumulation but there were also a sharp increase in aspartic acid, glutamine, argenine and proline.
dc.format5
dc.formatapplication/pdf
dc.identifierhttps://repositorio.catie.ac.cr/handle/11554/13872
dc.identifieropenAccess
dc.identifier.urihttp://hdl.handle.net/123456789/4267
dc.languagees
dc.publisherInstituto Interamericano de Ciencias Agrícolas (IICA)
dc.relationTurrialba Vol. 11, no. 4
dc.subjectTheobroma cacao||Theobroma cacao||Theobroma cacao||Theobroma cacao
dc.subjectPlántula||seedlings||plântula||plantule
dc.subjectDeficiencia de oligoelementos||trace element deficiencies||deficiência em micronutriente||carence en oligo-élement
dc.subjectPotasio||potassium||Potássio||potassium
dc.subjectCalcio||calcium||Cálcio||calcium
dc.subjectMagnesio||magnesium||Magnésio||magnesium
dc.subjectHoja||leaves||folha||feuille
dc.subjectComposición quimica
dc.subjectCompuesto orgánico||organic compounds||composto orgânico||composé organique
dc.subjectSíntoma||symptoms||sintoma||symptome
dc.subjectSede Central
dc.titleEl efecto de las deficiencias de potasio, calcio y magnesio sobre los constituyentes intermediarios de nitrógeno en las hojas de cacao
dc.typeArtículo

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