Effect of wild oats (Avena fatua) densities and proportions on yield and yield components of wheat
2006
Khan, I.A. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science) | Hassan, G. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Weed Science)
In order to study the effect of wild oats densities and proportional on yield and yield components of wheat, field trials were conducted at Malkandher Research Farm, NWFP Agricultural University Peshawar during Rabi 2004-05. The experiment was laid out in Randomize Complete Block (RCB) design with split plot arrangement. Four seed rates viz. 100, 130,160- and190 kg ha-1 were assigned to main plots, while wild oats densities 0,5,10,15,20,25 and 30 seed m-2 were kept into sub-plots. Data were recorded on number of spikes-2, spike length (cm), grains spike-1, 1000 grain weight (g), tiller wild oat-1, number of seed/ tiller of wild oat and grain yield (kg ha-1). Statistical analysis of the data showed that wild oats densities and seed rates statistically affected most of the parameters. Maximum number of spikes m-2 (281.9), spike length (9.33cm) number of grains spike-1 (50.0), 1000- grain weight (30.26) and were recorded in wheat monoculture (0 wild oat density plot). Seed rate of 160 kg ha-1 had significantly higher spikes m-2 (283.4), spike length (8.58 cm), 1000-grain weight (30.87 g) and grain yield. Thus a seed rate of 160kg ha-1 is recommended for suppression of wild oats population at wheat crop.
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