An experiment was conducted in agricultural college arboretum that belong to
tishreen university on okra during the growing season of 2013-2014 to investigate the
effect of spraying by organic fertilizers and growing point pinching on the growth an
d
yield.
The experiment include 8 treatments as control (without spraying by organic
fertilizers or growing point pinching), two kinds of organic fertilizers (ultra humic acid and
amino vega) with or without growing point pinching. Plots were completely randomized
over the experimental area having four replicates for each treatment. Each replicate
contained 14 plants.
Results showed that the highest values of vegetative growth parameters are stem
length branch number ,leave number per plant due to the interaction between pinching of
growing point and spraying by ultra humic acid and amino vega . The experiment results
revealed also ,that the highest yield and The largest number and weight of fruits was
produced from growing point pinching and spraying by ultra humic acid and amino vega,
compared to all other treatments.