Pod and Seed Yield and Quality of Common Bean under Water Deficit Stress and Foliar Application of Salicylic Acid and Megafol

In order to study the effects of salicylic acid (SA) and megafol (MF), on pod and seed yield and quality of common bean cv. Sanry under water deficit stress, the field experiment was conducted in split plot based on randomized complete block design with three replications. Three different irrigation regimes (33, 66 and 100% ETc) and foliar application of SA (0.5, 1 and 1.5 mM) and megafol (0, 0.1, 0.2 and 0.3 percent) were conducted. The results showed that water deficit stress significantly reduced pod lengh, pod fresh weight, seed number per pod, pod and seed yield, leaf relative water content and nitogen, phosphor and potassium contents. Water deficit stress reduced pod yield of 67.6% in 75% ETc and 94% in 50% ETc. Foliar application of SA and MF improved yield and quality of seed and pod, leaf relative water content and nutrient contents. The highest pod yield (13625.3 kg.ha-1), number of pods per plant (7.69), seed yield (4303.87 kg.ha-1), protein yield (671.8 kg.ha-1), carbohydrate yield (3356.7 kg.ha-1) was obtained with application of MF 0.2% under irrigation 100% ETc. The maximum value of carbohydrates (55.9 and 55.25%) was observed with application of MF 0.2% under irrigation 75 and 50% ETc, respectively. According to the results, the application of SA 1.5 mM and MF 0.2% can be proposed to improve yield and quality of pod under normal irrigation and water deficit stress.