Effected of gibberellin and salicylic acid on some growth parameters and nutrient content of Maize plant

Abstract

This experiment was conducted in biology department/ college of Education for girls at Kuffa – University to study the effect different concentration of Gibberellin (50,75,100) MG/L and Salicylic acid (10,20.30,)MG/ L Inaddition to control and their interaction on vegetative growth , nutrient content of (Zea mays L.) genetic structure (5012)The design of experiment was (R.C.B.D) RandomizedComplete Block Design in a factorial arrangement in four replication and the L.S D=0.05 was utilized as a method of mean separation whenever treatment effect was evident.Results showed :the use Gibberellin in (100 Mg/L) or Salicylic acid (30 Mg / L) in creased in number of leaves and area ,stem diameter , percentage of dry meter of shoot and root and total chlorophyll content the highest percentage nitrogen and phosphorous was at the (100 Mg/L) Gibberellin ,while the concentration of(50 Mg/L) Gibberellin give high percentage of phosphorus and the concentration of (30Mg/L) Salicylic acid caused high percentage of nitrogen ,phosphorous and potassium the interaction between Gibberellin and Salicylic acid reveald significant effect on most of vegetative criterion studed the combination of concentration from Gibberellin and Salicylic acid.