Journal of Biological Sciences

1727-3048 1812-5719

Asian Network for Scientific Information

10.3923/jbs.2001.132.133

Ullah

Hafeez

Gulzar Ahmad

Zar Quresh

3 2001

1 3 There was no significant effect of different weed control methods on the number of days to emergence of sunflower. Maximum plant height (175.33 cm), Head Diameter (18.75 cm), thousand kernel weight (69.83 g), achene yield (2274.99 kg/ha) and oil yield (946.59 kg/ha) were obtained by manual weed control plots while minimum plant height (159.5 cm), Head Diameter (16.26 cm), thousand achene weight (61.68 g), and achene yield (1547.49 kg/ha) were exhibited by treatments where no weeding was done. Maximum weeds (331.83 gm/m²) were recorded in plots where no weeding had taken place while minimum weeds (139.66 gm/m²) were recorded in the treatments where manual weed control had been practiced.

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