EFFECT OF N FERTILIZER AND FARMYARD MANURE ON WEED COMPETITION IN RICE NIGHAT SANA Arshad Javaid RUKHSANA BAJWA Amna Shoaib DOI: https://doi.org/10.28941/pjwsr.v20i2.538 PDF Published 2014-06-01 Issue Year 2014, Volume 20 , Issue 2 Section Articles