Impact of Calcium Sulphate Application and Humic Acid on Growth, Yield and Yield Components of Faba Bean (Vicia faba L.) under Sandy Soil Conditions

S.R.E. Abo-Hegazy and R.A. Badawy

Background and Objective: Faba bean (Vicia faba L.) is one of the most important food legumes in Egypt. The acreage’s and seed yields vary from one season and location to another. This study aimed to investigate the effect of calcium sulphate application and humic acid on the growth, yield and yield components of faba bean under sandy soil conditions. Materials and Methods: Two field experiments were carried out to study the effect of calcium sulphate (gypsum) rates (0, 0.75 and1.5 t fed^–1), foliar spraying with three levels of humic acid (0, 1.5 and 3 g L^–1) and their interactions on yield and yield components of three cultivars of faba bean (Giza-843, Sakha-1 and Sakha-4). Results: The differences between the two calcium sulphate rates for agronomic traits and seed chemical composition were significant in the two seasons. Application of 1.5 ton CaSo₄ fed^–1 gave the utmost values for most attributes studied traits in both seasons. Also, results showed that the differences between humic substance concentrations for all studied traits were significant in both seasons except HI. Foliar faba bean plants with 3 g L^–1 humic acid fad^–1 gave the highest values for all studied traits in the two seasons. Also, results showed that the differences between cultivars for all studied traits were significant in both seasons. G-843 faba bean cultivar gave the highest values for all studied traits within the two seasons. Conclusion: The most favourable effects for growth parameters and chemical composition traits resulted in the highest levels of CaSo₄ or humic acid for the Giza-843 cultivar.

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