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MOBILITY OF THREE HERBICIDES IN TWO DIFFERENT SOIL TEXTURES | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 50, Issue 0, 2009, Pages 15-18 | ||
| Author | ||
| Mowafaq Salim Barbosh | ||
| Abstract | ||
| This research carried out to estimate mobility three herbicides (Basta 20%, Weedoff 48%, Carbyne 12.5%) it might be reach on water table and polluted it. We definite the mobility by hydraulic conductivity it depends on liquid and soil feature. The samples collected from two locations Kefel was first one sandy soil belonged to Orthids group and second one was Mishkab clay soil belonged to Torrifluvents group. Soil columns had been prepared by three replicates to each one. So the H.CO determinated with constant head method to sandy soil and variable hydraulic gradient to clay soil. The H.CO measures made by two stages: 1-First stage treatments (3 soil herbicides vs control) 2- Second stage treatment (3 soil + herbicides + drying vs control). The results analysised by C.R.D. design with Dunnett's method to mean comparison it were : Carbyne > Water > Basta > Weedoff in sandy soil Water > Weedoff > Basta > Carbyne in clay soil It refers to Carbyne herbicide mobile by H.CO(0.57) cm.min-1 with significant deference (D0.05 = 0.12) vs other . It might be reach on water table as well as Weedoff succeeded by H.CO (0.05) cm.min-1 with (D0.05 = 0.122) vs others but that meant no risky than H.CO of control. | ||
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