Topping in wheat: effect on green fodder, plant growth and seed yield under Rodh Kohi condition [Pakistan]
2003
Khan, R.U. | Amir, A. | Sarwer, G. (Arid Zone Research Inst., Bahwalpur (Pakistan))
Field experiment was carried out on wheat crop during 2000-01 to determine the effect of topping in local and improved cv. Inqilab-91 at different stages for fodder and then after re-growth on seed yield. Topping level in wheat at tillering stage significantly produced a maximum green fodder of 13510 kg/ha-1 followed by wheat topped at 6-8 leaf stage with a fodder of 8750 kg/ha-1, whereas improved cv. Inqilab-91 gave a maximum green fodder of 8433 kg/ha-1 and 7750 kg/ha-1 at said stages. Plant height, spike length and grains spike-1 were significantly reduced with topping in both the varieties except tiller plant-1. Maturity was delayed 3-5 days in local wheat variety whereas 7-9 days in improved c.v. Inqilab-91 as compared to control (un-cut), respectively. Concerned to seed yield 2-3 fold reduction occurred in local wheat whereas in improved c.v. Inqilab-91, yield did not differ significantly between control (un-cut) and when it was topped at 6-8 leaf stage but 2 ® fold yield reduced, when it was topped at tillering stage. Although local wheat variety gave maximum green fodder but it yield was severely reduced than improved wheat c.v. Inqilab-91.
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