RESPONSE OF SEEDLESS GRAPES CVS. SUMMUER ROYAL AND CRIMSON TO SOIL APPLICATION OF SEAWEED EXTRACT KLEP 40 AND FOLIAR SPRAYS OF NUTRIENT SOLUTION AGROLEAF

Abstract

An experiment was conducted in Mahaweel Hort .,sation ,Babylon during the 2011-2012 to study the effect of soil application of seaweed extract( kelp 40) and foliar sprays of nutrient solution (Agroleaf) on vegetative growth and yield traits of "summer royal" and "crimson" seed less grape. A factorial experiment in randomized complete block design at splitplot design were a foliar sprays of nutrient solution ( Agroleaf) the main plot in three levels (0,7.5,15) g/l and The soil application of seaweed( kelp 40) in foure levels (0.20,40,60) mL/vine the subplot. The number of treatments were 12 for each cultivars, with three replicate. Each vine represened a single experimental unit and the treatment has been added at five times, the first was before flowering and the second was after complete fruit set.,and then every two weekes . Results revealed that soil application of seaweed extract kelp 40 and foliar sprays of nutrient solution Agroleaf and their interactions significantly improved vegetative growth and yield traits by increasing leaf area ,chlorophyll content , number weight the berries, cluster weight and the yields. The treatments S2A2,S3A1,S2A1 S3A2 revealed best result for most of characters studied .The maximum percent increase in yield %27.30 %22.21 in treatment S2A2 for"summer royal" and "crimson" cultivars respectively compared to control.