Acta Agronomica Hungarica
Volume/Issue:
Volume 50: Issue 3
Quality and yield in St. John's wort (Hypericum perforatum L.) harvested in different phenological stages
Authors:
F. Hevia Department of Agroindustry Chillán Campus, University of Concepción Chillán, Chile

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M. Berti Department of Plant Production, Chillán Campus, University of Concepción Chillán, Chile

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R. Wilckens 2Department of Plant Production, Chillán Campus, University of Concepción Chillán, Chile

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Pages:
349–358
Online Publication Date:
22 Jul 2005
Publication Date:
01 Sep 2002
Article Category:
Research Article
DOI:
https://doi.org/10.1556/AAgr.50.2002.3.12
Keywords:
yield; yield; yield; yield; Hypericum perforatum; Hypericaceae; hypericin; harvesting stage; flower; leaf
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Two experiments were conducted in the province of Ñuble, Chile during the 1997/98 and 1998/99 seasons with the objective of evaluating the effect of harvesting date on the yield and quality of St. John's wort (Hypericum perforatum L.) in the second year of production. The apical 25 cm of the stem were harvested in the following stages: flower bud, beginning of flowering, full flower and petal drop. A randomized complete block design with four replications was used. The best yield (fresh, dry and threshing weight) and the highest hypericin content were obtained at the petal drop stage. Nevertheless, the results indicate that the best time to harvest St. John's wort is when 10 to 20% of the flowers are open and the rest are in the bud stage.

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Cover Acta Agronomica Hungarica
Acta Agronomica Hungarica
Print ISSN:
0238-0161
Online ISSN:
1588-2527

Acta Agronomica Hungarica
Language English
Russian
German
French
Size  
Year of
Foundation		 1950
Publication
Programme		 ceased
Volumes
per Year		  
Issues
per Year		  
Founder Magyar Tudományos Akadémia   
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0238-0161 (Print)
ISSN 1588-2527 (Online)

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