The effect of density on yield and some agronomical and physiological traits of Amaranth )Amaranthus spp.(
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 12
Abstract
Grain Amaranth is a C4 crop with potentially increasing cultivation area. Yet, no standards exist for optimum plant density. The aim of this study was to determine crop possibilities and how crop density affects Amaranth agronomical, physiological and biological grain production and yield. A field experiment was conducted in Aliabad Gorgan in Golestan Province in 2010. Two genotypes (Amaranthus cruentus( amar ,)Amaranthus hypochondriacus( Anna, were established at four densities (17, 35, 70 and 140 plants m2 by hand thinning at a row spacing of 30 cm. Plant samples were hand-harvested for the determination of leaf area index and total shoot biomass. The results show that the effect of cultivar on seed thousand weight was significant. Seed thousand weight average for Amar was 0.61 and for Anna was 0.65, but the cultivar has no significant effect on seed yield. The effect of density on seed yield and seed thousand weight was significant and the most seed yield obtained from 140 plants per m2 and the least from 17. Increasing plant population decreased thousand seed weight and in both cultivars, the most seed thousand weight was belonged to 17 plants per m2 treatment .The results show that the effect of density on total dry matter, stem dry matter and leaf dry matter was significant and the most total dry matter, stem dry matter and leaf dry matter achieved from 140 plants per m2. The effect of cultivar on leaf area index was not significant but the Interaction between variety and density on leaf area index was significant.
Authors and Affiliations
Arezoo Pourfarid, Behnam Kamkar and Gholam Abbas Akbari
Keywords
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