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The Addition Effect of Sunflower Residues in Germination andGrowth of Four Barley Cultivars Hordeum vulgare L. | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 9, Issue 1, 2009, Pages 336-147 | ||
| Abstract | ||
| This research was carried out to study the effect of Sunflower residues on germination and growth of four barley cultivars Hordeum vulgar L which include (Furat,Gazeera,Yayhan and Aswodd mahalli). Laboratory and green house experiments were conducted to study the effect of aqueous extracts of Sunflower residues with soil which was added at ratio (3,6,9٪) w:w and incubated for one week on the germination and seedling growth of barley.The results of both laboratory and green house experiments showed a significant reduction in the germination percentage and seedling growth of barley (in coleoptyl and radicle length and their dry weights) showing that the inhibition increase depends on the concentration of the extracts and also on the ratio of residue addition. The extract at the concentration (6٪) caused the greatest inhibition in germination (41.49٪); in coleoptyl length (43.56٪); in radicle growth (58.12٪). As for the addition effect ratio, it revealed that the greatest inhibition was (at the ratio 9٪) it is (31.82) in germination . The above results comes similar to those of green house which showed a reduction in germination and growth of barley plants cultivated in the soil containing sunflower residues. They indicated that the greatest inhibition in germination was in Gazeera cultivars at the ratio 9٪ which recorded 36.36٪. This inhibition was accompanied by a reduction in the 3rd leaf area and chlorophyll content. The tested barley cultivars had different reaction to the addition of sunflower residues in which Gazeera cultivar was the most sensitive whereas Rayhan was the most resistant. | ||
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