Effect of Some Growth Stimulating Compounds on Growth and Yield of Three Sweet Corn ( Zea mays L. Saccharata) Cultivars

A field trial was conducted throughout the course of the two summers that followed (2022 and 2023) in the Experimental Station of the Horticulture Dept., Agric. Fac., Benha Univ, to examine the impact of some growth stimulating compounds i.e., potassium silicate, lithovit and Cab-star (CaB2) 2 ) as spraying on growth and, yield component of three sweet corn cultivars ( Zea mays saccharata) ) i.e., Hytech-3010, Nuzivedu-Misthi and Evergrow-25471. Results indicate that using Nuzivedu-Misthi cultivar combined with Lithovite (0.5 g l-1)-1 ) three times, beginning 1 month after sowing and at intervals of every 2 weeks recorded the best and significant values regarding plant length, number of leaves, leaf area, total yield per feddan (one feddan = 4200 m2) 2 ) and its compounds such as ear length (cm), number of row per ear and ear diameter as compared with the other used combinations during both seasons of the experiment. Furthermore, Nuzivedu-Misthi cultivar combined with spraying lethovit recorded the best and significant values regarding total starch, protein, reducing sugar and non reducing sugar except moisture % during both seasons of the experiment.