عنوان مقاله [English]
نویسندگان [English]چکیده [English]
To study the effect of organic growth stimulants and harvest time on contribution of current photosynthesis in soybean cultivar Williams, a factorial experiment was conducted based on randomized complete block design with 15 treatments and three replications at Rice Research Institute of Iran (Rasht) in 2012-2013. The first factor was spraying of Kadostim (50.00), Aminol Forte (20.00), animal manure (cow, 10 t ha-1, with ratio of 0.1 in water), magnetic water (20 lit m-2) with a control (no spray) and the second factor was three harvest times including 20-25% seed moisture content, 14-15% seed moisture content (yellowing of more than 95% of pods), and 10-12% seed moisture content (complete pods maturation). Mean comparison for the interaction showed that spraying of Kadostim at the second harvest time produced highest grain and oil yield (2853 and 664 kg ha-1, respectively), protein yield (1019 kg ha-1) and current photosynthesis (2405 g m-2). Spraying of Kadostim and animal manure had the highest dry matter remobilization (415.7 and 383.4 g m-2, respectively), dry matter remobilization efficiency and oil content. On the basis of the results of this experiment, it seems that spraying of Kadostim and animal manure at second harvest time causes to increase production, prevent the damaging effects of environmental pollutants and reduces production costs.