The Impact of Residues Extract of Sorghum Plants Sorghum bicolor (L.) Moench and Johnson Grass Sorghum halepense in The Inhibition of Germination and Growth of Some Weeds Plants of Wheat . | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 16, Issue 1, March 2016, Pages 30-42 | ||
| Authors | ||
| Mauaed Aeada Kalil Mahlaf; Shaker M. Saleh | ||
| Abstract | ||
| The study was carried out in College of Agriculture_ Tikrit univ. durig 2014 _ 2015 season. Two type of experiments were applied ,the first was laboratory experiment using aqueous extract of two plants residues which have allelopathic potential as extract Sorghum bicolor (L.) and Jhonson grass extract Sorghum halepense in different concentrations to determine their effect on seed germination and seeding growth of some weed plants and wheat crop. In two application , accorcling the time of addition of extract (pre emergence and post emergence ). The second experiment was applied as a pots experiment , with some concentration and some addition of laboratory experiment . all extract treafments effect were compaired with one herbicide (Treflan) in recommended 5praying dose. The experiments were designed as a Complete Randomized Desing ( C. R. D )with three replicats . The results of laboratory study Can be summarized as following :- Seed germination percentages of narrow leaves were decreased significantly when treafed by 30% concentrafion of sorghum and jhonson grass extract when added as preemergence. The redection pecectage complaining with control treatamet were ( 55.7 and 42.8%) respectively. The highly concentration of plant residues affected on plamule length of narraw leafs weed clossly to treflan herbicide effect when the addition of extract was a pre emergence .The inhibiting percentage of plamule length were( 42.3 and 40.0% ) sorghum and jhonson grass where as the Treflan inhibiting the length by 60.4%.Radical dry weight of narrow leafs weeds redused signify catly according to highly extract concentration. Sorghum and jhonson grass residue extract by 30% were redused the radical dry weight by( 71.8 and 66.8%) while treflan herbicide inhibiting was 67.2% .The residue extract of sorghum and jhonson grass as a post emergence in narrow leaves weeds affected on plamule and radical length less than pre emergence application . where as their effects in plamule and radical dry weight were higher than pre emergence application . Radical dry weight inhibited by ( 70.8 and 66.9%) when the sorghum and jhonson grass extract added to seedling weeds as a post emergence with 30%concentration. | ||
| Keywords | ||
| Residues; Sorghum; wheat weeds | ||
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