S., S., Mubarak, M. (2014). DOES SILICON ALLEVIATE the INJURIES of NITROGEN DEFICIENCY and FENOXAPROP–P–ETHYL HERBICIDE in WHEAT (Triticum aestivum, L.)?. test, 22(2), 347-360. doi: 10.21608/ajs.2014.14740
Saudy H. S.; Manal Mubarak. "DOES SILICON ALLEVIATE the INJURIES of NITROGEN DEFICIENCY and FENOXAPROP–P–ETHYL HERBICIDE in WHEAT (Triticum aestivum, L.)?". test, 22, 2, 2014, 347-360. doi: 10.21608/ajs.2014.14740
S., S., Mubarak, M. (2014). 'DOES SILICON ALLEVIATE the INJURIES of NITROGEN DEFICIENCY and FENOXAPROP–P–ETHYL HERBICIDE in WHEAT (Triticum aestivum, L.)?', test, 22(2), pp. 347-360. doi: 10.21608/ajs.2014.14740
S., S., Mubarak, M. DOES SILICON ALLEVIATE the INJURIES of NITROGEN DEFICIENCY and FENOXAPROP–P–ETHYL HERBICIDE in WHEAT (Triticum aestivum, L.)?. test, 2014; 22(2): 347-360. doi: 10.21608/ajs.2014.14740

DOES SILICON ALLEVIATE the INJURIES of NITROGEN DEFICIENCY and FENOXAPROP–P–ETHYL HERBICIDE in WHEAT (Triticum aestivum, L.)?

Arab Universities Journal of Agricultural Sciences
Article 10, Volume 22, Issue 2 - Serial Number 1, September 2014, Pages 347-360    PDF (617.75 K)
Document Type: Original Article
DOI: 10.21608/ajs.2014.14740
Authors
Saudy H. S.* 1; Manal Mubarak2
1Agron. Dept., Fac. Agric., Ain Shams Univ., Shoubra El–Kheima, Cairo, Egypt
2Soil Sci. Dept., Fac. Agric., Ain Shams Univ., Shoubra El–Kheima, Cairo, Egypt
Abstract
Si application alleviates influence of some abiotic stresses on crop plants. Meanwhile, scarce information is avaiable about the significance of Si for helping the plants to overcome the injuries of N deficiency and herbicides pressure. Thus, two–year 2–field experiments were carried out in wheat. Experiment I involved three Si concentrations (Si0ppm, Si250ppm and Si500ppm) and two N levels(N100% and N50%). Experiment II examined four combinations of fenoxaprop–p–ethyl and Si: fenoxaprop–p–ethyl+Si250ppm and fenoxaprop–p–ethyl+Si500ppm (each either in sequence or in tank mixture), fenoxaprop–p–ethyl alone, hand weeding and weedy check. Under N deficiency (N50%), Si500ppm increased plant height as compared to the control. No significant differences in SPAD values were detected amongst Si concentrations under each of the two tested N levels. Si can partially alleviate negative N deficiency effect on wheat yield, causing its increase to level obtained under normal N supply. Si has no effect on weed biomass when applied with fenoxaprop–p–ethyl either in sequence or in tank mixing. The most promising treatment for maximizing wheat grain yield was the application of 100 kg N ha–1 (N50%) x fenoxaprop–p–ethyl+Si250ppm in sequence", which also, in the same time, means reducing both cost of crop production and environment pollution.
Keywords
Wheat; weeds; Fenoxaprop–p–ethyl; Nitrogen deficiency; silicon
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