Abstract:
This study was carried out in order to determine the comparative effects of ammonium nitrate
and blood meal on plant morphology and leaf coloring in Green Bean (Phaseolus vulgaris L.)
seedlings are grown under 100 mM salinity stress. The trial was applied in 2 (control and salt
stress) x 2 (ammonium nitrate and blood meal doses) factorial experimental design with 5
replicates. In this trial, ammonium nitrate was used as nitrogen source to get 5 N doses (0, 50,
100, 200 and 300 ppm) and similarly, blood meal was used comparative N source to get the same
respective N doses. Salt was applied to perlite in impermeable pots at 100 mM NaCl
concentration. Results showed that both ammonium nitrate and blood meal treatments increased
plant height, fresh and dry weight of shoot and root tissues compared to controls. According to
color measurements on the leaves, although salt stress increased L, a and b values both
ammonium nitrate and blood meal reduced these values. Especially, blood meal giving 200 ppm
N per pot increased significantly the measured morphological parameters and color quality of
green bean plants. To conclude, blood meal affected plant morphology and leaf coloring as
ammonium nitrate on the basis of their equivalent N content, suggesting that blood meal can be
used in fertilizing vegetables as alternative nitrogen source with taking precautions against
possible contaminations. |
