EFFECT OF SEAWEED EXTRACT AND CYTOKININ (CPPU) SPRAYING ON GROWTH OF LEMON (CITRUS LIMON L.) SEEDLING BUDDED ON SOUR ORANGE

The study was carried out in a private nursery in Al-Qasim district located in Babil governorate in the period from 1/9/2018 to 1/9/2019 to study the effect of spraying with marine algae extract (Agazone) and cytokinin spray (CPPU) on the growth of local sour lemon grafted on the origin of Citrus aurantium. The experiment was carried out according to the design of the complete random sectors and three replicates, where the experiment included spraying four concentrations of seaweed extract (Agazone) 0, 3, 6, 9ml /L-1 and four levels of spray regulator growth (CPPU) 0,2,4,8 mg/L-1. The results showed a significant effect in all the studied traits, especially the treatment of spraying with Agazone algae extract at the concentration of 9 mL/-1 and spraying with growth regulator CPPU at the concentration of 8 mg/ L-1 as it achieved a significant increase in seedling height, number of leaves, area of leaves, increase plant stem diameter rate. The stem was 78.75 cm, 83.42 cm, 63.83 leaves. Seedlings-1, 65.33 leaves. Seedlings-1, 1401.25 creamy 2. Seedlings-1, 1633.56 creamy 2. Seedlings-1, 1.65 mm, 1.44 mm as well as leaf content of chlorophyll and nitrogen were 47.89 SPAD, 47.98 SPAD, 2.47%, 2.44% respectively for both study factors.