https://doi.org/10.37229/fsa.fja.2026.07.06

In Moshtohor district of the Qalubia Governorate, field experiments were carried out in 2024 and 2025. The corn leaf aphid, Rhopalosiphum maidis (Fitch), and the cotton leaf worm, Spodoptera littoralis Boisd. and were used as sources of silica to estimate the effectiveness of alternative materials for control. The plants were sprayed with potassium, sodium, and magnesium silicate as well as their Nano image. The highest percentage decrease (76.84 and 77.84) and (70.27 and 71.21) in controlling the maize leaf aphid and the cotton leaf worm in the 2024 and 2025 seasons, respectively, was found when the spray was applied at a rate of 4g/l from Nano potassium silicate. In both seasons, magnesium silicate at a rate of 6g/l produced the lowest percentage reduction on maize leaf aphids (45.43 and 45.90) and cotton leaf worms (40.79 and 41.02), respectively. The yield characteristics of maize plants increased the most when treated with potassium silicate NPs, and there was no discernible difference between the two seasons.