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Journal of Agronomy
Year: 2007  |  Volume: 6  |  Issue: 1  |  Page No.: 119 - 124

Impacts of Plant Population on Wheat and Barley Genotypes under Salinity Conditions

Ghalib Shalaldeh and Talal Thalji    

Abstract: A study was conducted to investigate the effects of plant population on the performance of wheat and barley genotypes under salinity conditions. Three barley genotypes: Rum, Acsad 176 and Line (5) and five wheat genotypes: Jumaizeh, Bin-bashair, Cham-3, Cham-6 and Snb1s1 were grown at Central Jordan Valley during 2005 growing season. Soil and water analysis showed salinity of (4-6 dS m-1 at 0-60 cm depth) for soil and (1.9-2.7 dS m-1) for water. The experiment was under split plot design with three replications. For wheat genotypes, results showed no significant differences with respect to grain and straw yields except for Jumaizeh for straw yield. For plant population, population (D3 = 400 plant m-2) showed the highest biological (14.1 t ha-1), grain (4.1 t ha-1) and straw (10.3 t ha-1) yields. For the interaction effects (Jumaizeh*D3) gave a significant interaction for biological (16.1t ha-1), grain (4.4 t ha-1) and straw (11.6 t ha-1) yields. For barley genotypes, results showed no significant differences between them with respect to the three characters studied however, Rum was the highest amongst them. For the population, population (D2 = 250 plant m-2) revealed the highest biological (9.9 t ha-1), grain (1.6 t ha-1)and straw (8.3 t ha-1) yields. For the interaction effects, results exhibited the significance of (Rum*D2) over other interactions for biological (12.2 t ha-1), grain (2.0 t ha-1) and straw (10.2 t ha-1) yields. Plant populations (D3 = 400 plant m-2) and (D2 = 250 plant m-2) are recommended for wheat and barley, respectively when planted under saline conditions, as well as the genotypes-population interactions that revealed the highest yields.

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