Document Type : Research Paper

Authors

1 Former M.Sc. Student, Department of Agronomy, Faculty of Agriculture, Zabol University, Zabol, Iran

2 Professor, Department of Agronomy, Faculty of Agriculture, Zabol University, Zabol, Iran.

3 Professor, Department of Agronomy, Faculty of Agriculture, Zabol University, Zabol, Iran

4 Assistant Professor, Department of Agronomy, Faculty of Agriculture, Zabol University, Zabol, Iran

Abstract

This study was conducted to investigate the effect of organic growth Stimulator on growth and yield of rapeseed (Dalgan cultivar) under drought in university of Zabol (Chahnime) during 2017as split plot design based on RCBD with three replications. The treatments consisted of irrigation cut off levels based on the phenological growth stages (Sylvester-Bradley encoding system): I1 = control (complete irrigation), I2 = irrigation up to stage the growth rate code is 2.20 (twenty internally identified) and I3 = irrigation to stage the growth rate code is 5.9 (all pods are more than 2 cm long) and subsidiary factor consists of four levels of fertilizer : F1 = control (pure water solution), F2 = Hamoon Green 1 liter at 10 liter + calcium, F3 = Hamoon Green 1 L at 20 liter + calcium, F4 = Hamoon Green 1 liter at 30 liter + Calcium. The results showed that I2 caused a significant decrease in plant height, stem diameter, number of pods, number of seeds per pod, 1000 seed weight, grain and biological yield and oil percentage, and also F2 increased the above traits except the percentage of oil. Interaction effects showed that the highest amount of chlorophyll a, b, total, carotenoid, selenium and calcium content of grain obtained from I1F2. The highest amount of proline in I2F2 observed. The highest of these traits was obtained from F2. Generally, spraying of the organic growth stimulator can be moderates the harmful effects of drought stress in rapeseed and 27% improved seed yield.

Keywords

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