EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL
Mohamed Ali, M., El-Tokhy, A. (2018). EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL. EKB Journal Management System, 68(1), 117-133. doi: 10.21608/ejdr.2018.4685.1006
Mohamed Mohamed Ali; Ahmed El-Tokhy. "EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL". EKB Journal Management System, 68, 1, 2018, 117-133. doi: 10.21608/ejdr.2018.4685.1006
Mohamed Ali, M., El-Tokhy, A. (2018). 'EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL', EKB Journal Management System, 68(1), pp. 117-133. doi: 10.21608/ejdr.2018.4685.1006
Mohamed Ali, M., El-Tokhy, A. EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL. EKB Journal Management System, 2018; 68(1): 117-133. doi: 10.21608/ejdr.2018.4685.1006

EFFECT OF NITROGEN AND SOME WEED CONTROL METHODS ON YIELD AND QUALITY OF ONION IN A NEWLY RECLAIMED SOIL

Egyptian Journal of Desert Research
Article 5, Volume 68, Issue 1, June 2018, Page 117-133  XML PDF (282.29 K)
Document Type: Original Article
DOI: 10.21608/ejdr.2018.4685.1006
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Authors
Mohamed Mohamed Ali email 1; Ahmed El-Tokhyorcid 2
1Department of Horticulture, Faculty of Agriculture, New Valley University
2Department of Plant Protection, Faculty of Agriculture, New Valley University
Abstract
Two field experiments were carried out during the two successive winter seasons of 2014/2015 and 2015/2016, at the Farm of the Faculty of Agriculture, New Valley University, to study the effect of four rates of mineral nitrogen fertilizer, i.e., 0, 178.60, 357.14 and 535.71 kg N ha-1and three weed control methods, i.e., unweeding, hand weeding and chemical herbicides, i.e.,bentazon (Basagran® 48% AS) and clethodium (Select super® 12.5% EC) at the recommended rates (1.19 L/238L/ha and 0.595 L/238L/ha, respectively)on yieldandbulb quality of onion cv. Giza 6. The obtained results showed that the interaction from mineral nitrogen at the highest rate (535.71 kg N ha-1) and hand weeding methodsignificantly increased the percentages of bulbs ranged from 6-8 cm in diameter, doubles,bulbfreshweight (g), bulb diameter and length (cm),bulb dry matter(%), bulb quality such as vitamin C concentration, percentages of sulfur volatile oil, total soluble solids (TSS), crude protein and total carbohydratesin onion bulb. On the other hand, the percentages of bulbs ranged from 3.5-6 cm in diameter, bolters and pickleswere the highest with the interaction between unfertilized and unweeding plants in both growing seasons. In this regard, the interaction between the highest rate of nitrogen ha-1and hand weedingmethodsignificantly increased yield ha-1.In addition,thehighest values ofyielddue to the interaction between the highest rate of nitrogen ha-1and hand weedingmethodwere12.59 and 13.51 ton ha-1, when compared to the interaction between unfertilized and unweeding plants(4.29 and 4.19 ton ha-1) in both growing seasons, respectively.
Keywords
Allium cepa; nitrogen; hand weeding; herbicides; yield; Volatile oil
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