Research Article 
The Response of Awnless Six Row Barley (Hordeum vulgare L.) To Nitrogen Fertilizer Application
and Weed Control Methods in the Absence of Moisture Stress
M.A. Turk, A.M. Tawaha, N. Samarah and N. Allataifeh
Journal of Agronomy, 2003, 2(2), 101-108.
Abstract
Field experiments were conducted to detect the influence of varying N rates and weed control methods and 2, 4-D ester which was applied at two growth stages on yield, yield components, and phenological traits of barley. Among N rates significantly highest grain yield (2112.5 kg ha‾1) was obtained under 120 kg N ha‾1 owing to the highest numbers of spikes m‾2 (537.5), spike length (7.5 cm), and number of grains per spike (56.3) though it had the lowest 1000 seed weight. Hand weeding provided the better weed control method and this was reflected in higher barley yield. Application of 2,4-D at stage 22-28 also produced significantly higher grain yield as compared to unsprayed control. The only weed control treatments, that reduced barley yield when 2,4-D was applied at mid boot stage.
ASCI-ID: 31-58
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