Nitrogen Uptake Efficiency in Wheat ( Triticum aestivum L.) as Influenced by Nitrogen Level and Weed-crop Competition Duration

摘要

Nitrogen uptake efficiency in wheat ( Tritcum aestivum L.) as influenced by nitrogen level and weed-crop competition duration was determined at the Agronomic Research Area, University of Agriculture, Faisalabad during 1998-99. The data showed that yield,