Effect of Organic Treatment on Growth and Leaves Mineral and Hormonal Content in Plum Trees

Abstract

This experiment was conducted in plum orchard affiliated to Researches Station A - College of Agricultural Engineering science / University of Baghdad for the season 2020 on "Hollywood" plum trees to study the effect of adding liquid organic fertilizer vit -org and spraying plant extracts (turmeric, ginger) on growth and leaf mineral and hormonal content. The treatments were designed with a factorial experiment within RCBD design ,that included adding liquid organic fertilizer with three levels (0,30,60) ml. tree^-1 and plant extracts spray with two levels (10,20) g. L^-1 for each of them and control treatment. The results showed that the addition of liquid organic fertilizer vit-org had a significant effect on vegetative growth characteristics especially as the treatment O₆₀ (60 ml. Tree^-1) was significantly superior in most of the studied traits. spraying with plant extracts (turmeric and ginger) led to a significant increase in the studied traits, as the spraying treatment T₂₀ (20 g. L^-1) outperformed in shoot nitrogen content and leaf area as for the spray treatment of G₂₀  (20 g. L^-1), it excelled in leaf dry weight,leaf chlorophyll content and leaf  zinc content . The interactions between the study factors had a significant effect on the studied traits, as the two interaction treatments ( O₆₀T₂₀) and (O₆₀G₂₀ ) gave clear significant differences in most of the studied traits.