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EFFECT OF ADDING
INORGANIC, ORGANIC AND MICROBIAL FERTILIZERS ON SEED GERMINATION AND
SEEDLING GROWTH OF SUNFLOWER
M. JALALUDDIN1
AND MARIA HAMID2
Abstract:
In a comparison made on
the effect of adding inorganic, organic and microbial fertilizers in
soil on the germination of seeds of 4 sunflower varieties viz.,
Hysun-33, Hysun-38, Helico-250 and SA-278 it was found that manure and
triple phosphate had good effect as compared to the control series.
Inoculation of microbial fertiliser (VAM-fungal spores) had no effect
for 6 days and the percentage of germination of seeds was equal to the
control series. On the emergence of seedlings there was a better
seedling growth in VAM-fungi inoculated plants as compared to organic
manure and inorganic triple phosphate fertilisers. Addition of 300 mg/kg
of manure and triple phosphate showed better increase in growth and
fresh and dry weights over the control. Addition of 500 mg/kg of manure
and triple phosphate in soil showed lodging of seedlings. Inoculation of
500 spores/kg in soil showed remarkable effect on the growth of
seedlings after 15 days and there was no lodging of seedlings. The
increase in growth was due to the establishment of symbiotic association
between the VAM-fungi in roots of sunflower plants which was evident
under microscope.
Department of
Agriculture, University of Karachi, Department of Botany, University of
Karachi, Pakistan
mariahamid79@hotmail.com
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