Effect of drought Stress as water deficit and Plant density on yield roselle (Hibiscus sabdariffa) in Jiroft region

Subject Areas : New Finding in Agriculture

P. Rahbarian ¹ ( Major expert of Horticulture Medicinal Plants Department, Azad Islamic University, Jiroft Branch, Iran )
Gh, A fsharmanesh, ² ( Department of Agronomy and Plant Breeding, Jiroft Branch, Islamic Azad University, Jiroft, Iran )
N. Modafe Behzadi, ³ ( Department of Agronomy and Plant Breeding, Bam Branch, Islamic Azad University, Bam, Iran )

Received: 2015-11-26 Accepted : 2015-11-26 Published : 2011-05-22

Keywords: Water stress, Plant density, Roselle, calyx yield,

Abstract :

In order to investigation drought (water deficit)and Plant density on roselle (Hibiscus Sabdariffa) the research wasconducted at research farm of Jiroft Islamic Azad University during 2009. Theexperimental design was split plot based on RCBD with three replications.Drought stress (water deficit) were selected based on different percentage of field capacity (FC), in 4 Levels (no stress, 75% FC, 50% FC and 25% FC) were selected as main plots and plant density Levels (20, 40, 60 and 80 plant per square meter) were arranged on sub plot. The results showed that, effect of waterstress on calyx yield, weight fruit, dry weight, weight seed per plant and plant height were significant (                         = 0.01). Effect of Plant density on calyx yield, fruit numberper Plant, Weight fruit and dry Weight were significant (  = 0.05). Water deficit,significantly reduced calyx yield from 617.5 to 430.8 Kg/ha in 25% FCtreatment. The highest calyx yield obtained from water deficit treatment 75%FC(660.8 Kg/ha). The highest amounts of calyx yield 576.7 Kg/ha were observedfrom plan density treatment (40 plants/m2) But No significantly withPlant density (20 plants/m2). Finally about roselle, irrigation in75%FC and plant density 20-40 plants per m2 for the Jiroft region wasrecommended.

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