The possibility of canola achieving self-sufficiency in oil production in
Egypt is feasible due to its adaptability to different climates and potential for
cultivation in the country. With proper investment in research, infrastructure, and
agricultural practices, Egypt can increase canola production and reduce its
dependence on imported oils. So, two field trials were carried out during
sequential winter seasons of 2021/2022 and 2022/2023 aiming to study the
influence of four rates of elemental sulfur (ES) soil applications as main plots
[control (ES0), 100, 150 and 200 kg S fed-1
] and five micronutrient treatments as
foliar application [control (without spraying), boron (B), zinc (Zn), iron (Fe) and
mixture of them] as sub-plots on growth, yield and its components of canola
plants. The values of available N, P, K, S and pH were measured in the
experimental soil after harvest. The results of the study demonstrated that
increasing the level of elemental sulfur fertilizer to 200 kg S fed-1 resulted in the
highest vegetative growth values, effective yield, and its constituent parts
compared to the control (ES0). Applying foliar treatment with a mixture of B, Zn,
and Fe also had a significant positive effect on all growth parameters, yield, oil
yield and protein yield. Moreover, the interaction between applying 200 kg S fed-
1
of elemental sulfur and foliar treatment with the mixture of B, Zn, and Fe
caused the highest values for canola plant development, yield, and its
components. Additionally, the control treatment (ES0 x without spraying) led to
the highest remaining N and K concentrations in the soil, while the applying 200
kg S fed-1
of elemental sulfur without foliar treatment resulted in the highest
remaining P and S concentrations.