Yield losses due to wild oats in wheat crop
2012
Khan, I. | Khan, M.I., Khyber Pakhtunkhwa Agricultural Univ., Peshawar 25000 (Pakistan). Dept. of Weed Science
In order to quantify the yield and protein losses in wheat crop due to different wild oat densities, two experiments were conducted at Agricultural Research Form, Khyber Pakhtunkhwa Agricultural University Peshawar, Pakistan for two cropping seasons, i.e. 2007-08 and 2008-09. The experiment was laid out in Randomized Complete Block (RCB) design with split plot arrangement, having four replications. Three nitrogen levels (75,100 and 125 kg/ha) were kept in main plots while five wild oats densities (0,10,20,30, and 40 plants/sqm) were assigned to the sub plots. The sub-plot size measured 5x1 sqm. The two year data revealed that less than one wild oats plants/sqm inflicted % reduction in wheat yield, while 30% reduction in yield was computed with the infestation of 16,18 and 17 plants/sqm under 75,100 and 125 N kg/ha fertilizer regimes, respectively. It was further discovered that there existed a wild oats density related reduction in grain protein content. About one and a half wild oats plant/sqm reduced protein content by 1%, which is alarming in vegetable based diets like Pakistan. Judicious control measures for wild oats are recommended to be adopted for harvesting better quantity and quality of wheat.
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