TY - JOUR N2 - In two field experiments, the effect of some weed control treatments (citric acid at the rate of 10, 15 and 20%, acetic acid at the rate of 20, 30 and 40%, oxadiargyl, oxyflurfen, rice straw mulch, hand hoeing and an unweeded check control treatment) on weed growth and onion productivity in sandy soils at the Agricultural Experimental Station of the National Research Centre, Egypt was studied. The results indicated that all weeded treatments reduced the dry weight of broadleaf, grassy and total weeds as compared with the weedy check. Oxadiargyl, followed by two hand hoeing, rice straw mulch and acetic acid 40% recorded the greatest weed control efficiency. Insignificant differences were noticed between these treatments. Applying rice straw mulch increased bulb length, bulb diameter, bulb weight and onion yield by 67.52, 57.55, 45.74 and 66.22% over the weedy check, respectively. The highest values of N, P and K were obtained from rice straw mulch treatment followed by hand hoeing, oxadiargyl and acetic acid 40% treatments. It may be concluded that farmers can certainly depend on mulching or acetic acid at 40% instead of using chemical herbicides especially in organic farm systems for controlling onion weeds. L1 - http://www.czasopisma.pan.pl/Content/114662/PDF/OA_10_JPPR_59_4_385_Rl-Metwally.pdf L2 - http://www.czasopisma.pan.pl/Content/114662 PY - 2019 IS - No 4 EP - 486 DO - 10.24425/jppr.2019.131266 KW - acetic acid KW - Allium cepa KW - citric acid KW - onion KW - rice straw A1 - El-Metwally, Ibrahim A1 - Shalaby, Shehata PB - Committee of Plant Protection PAS PB - Institute of Plant Protection – National Research Institute VL - vol. 59 DA - 2020.01.13 T1 - Herbicidal efficacy of some natural products and mulching compared to herbicides for weed control in onion fields SP - 479 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/114662 T2 - Journal of Plant Protection Research ER -