Integrated Effects of Potassium Humate and Planting Density on Growth, Physiological Traits and Yield of Vicia faba L. Grown in Newly Reclaimed Soil

Several agronomic factors, including planting density, affect plant growth and final yield. New soil suffers from severe fertility shortage crop productivity. Potassium humate (KH) application improves performance under new conditions. Therefore, this investigation was performed in two seasons of 2018/2019 2019/2020 to study the impact KH at rate 50 kg hectare?1 (ha?1) on growth, yield, physio-biochemical attributes, water status nutrients faba bean plants grown newly reclaimed three densities, i.e., D1 = 222.222 ha?1 (15 × 60 cm), D2 166.666 (20 cm) D3 133.333 (25 cm). The results showed that enhanced tissue by increasing membrane stability index (MSI%) relative content (RWC%), while electric leakage (EL%) reduced, alongside increased attributes properties nutrients. These were positively reflected improved yield its components (i.e., number pods plant?1, 100-seed weight, seed plant?1 ha?1) favor medium density (166.666 ha?1). current with best treatment combination enhance productivity (2.97 ton