effects of irrigation levels and foliar application with iron and zinc on quantitative and qualitative traits of red bean (phaseolous vulgaris l. (

in order to evaluate the effects of irrigation levels and foliar application with fe and zn on quantitative and qualitative traits of red bean, an experiment was designed as split plot based on a completely randomized block design with three replications in lordegan country in summer 2011. irrigation as the main plot at three level such on: irrigation after 50, 75 and 100 mm evaporation, and foliar application as the sub-plot included four level: foliar application with water (control), ferrous sulfate (3 g.l-1), zinc sulfate (3 g.l-1), and mixture of ferrous sulfate and zinc (3 g.l-1). in this experiment yield, yield component and qualitative traits of seed bean was evaluated. the results showed that irrigation had a significant effect on all traits of red bean, except for seed number and seed iron and zinc contents. the highest and the lowest pod number, biological yield and harvest index achieved in irrigation after 50 and 100 mm evaporation, respectively. also, the highest (25.6 %) and the lowest (19.8 %) seed protein content belonged in irrigation after 100 and 50 mm evaporation, respectively. the effect of foliar application on all traits except harvest index was significant. the highest number of seeds per pod (3.86), number of pods per plant (8.53), biological yield (7535 kg.ha-1) and seed protein (23.71 %), obtained with iron and zinc foliar application treatment and lowest of them (3.38, 6.48, 6259 kg.ha-1 and 22.18 % respectively) obtained in the control treatment. foliar application with iron and zinc increased the concentrations of these elements in seed compared to control significantly. the effect of spray on 100-seeds weight in treatments irrigation after 50 and 75 mm evaporation was significant. so, that the highest 100-seeds weight in two surface irrigation was in foliar application with iron and zinc treatments, and the lowest was in the control. interaction between irrigation and foliar application on seed yield showed that in treatments irrigation after 75 and 100 mm evaporation, the highest yield (2513 and 1747 kg.ha-1) achieved in iron and zinc foliar application and the lowest (2005 and 1062 kg.ha-1) obtained in control.