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Paper Information

Journal:   PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH)   spring 2017 , Volume 9 , Number 28 ; Page(s) 156 To 167.

The effect of plant density and iron and zinc on yield and quality of roselle (Hibiscus sabdariffa)

Author(s):  Borji Abad a.*, GALAVI M., RAMROODI M.
* University of Zabol, Zabol, Iran
In order to evaluate the effect of density, soil and foliar application of iron and zinc on yield and quality of Roselle (Hibiscus sabdariffa), an experiment was performed in a split plot design in randomized complete block design with three replications in Zabol University. Density was at three levels 2, 4 and 6 plants per square meter, as the main cause of micronutrient intake in five levels, sprayed with chelated iron 6% rate 4 per thousand, sprayed with chelated zinc rate 2 per thousand, soil application of chelated iron 6% to 50 kg, and soil application of chelated zinc15% to 50 kg per hectare, was performed. The spraying with water was considered as a secondary factor. The results showed that most quantitative traits including plant height, stem diameter, number of branches, number of seeds per plant, weight and dried sepals and biological yield of boll were affected by density. The most wet and dry weight of sepals were obtained in density six plant density, . Sepals much dry so that the density of 6 plants per square meter than 2 density was 200% increased. Effect of soil and foliar application of micronutrients showed significant increase in the number of bolls, biological yield, weight of 1000 seeds, number of branches, number of seeds per plant, wet and dry weight sepals, and amount of anthocyanin and protein sepals. Based on the results of this study, to achieve maximum performance of dry sepals, six plants with foliar application of zinc can be recommended as a suitable treatment.
Keyword(s): Anthocyanins,micronutrients,medicinal herbs,soil application
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