استجابة شتلات الزيتون لاضافة مستخلص الطحالب البحرية للتربة و التغذية الورقية بالمغنسيوم

الملخص EN

The experiment was conducted in lath house during 15/3 – 15/10/2010 in Neaimiyia Nursery-General Establishment of Horticulture and Forestry to study the effect of marine fert assoil application and foliar application of magnesium and interaction on some features of olive transplants –K18 and Khodeiri cvs.

Marine fert (12% natural organic matter extracted from seaweed Ascophyllum nodosum)was applied with 0,2,4 ml/ l.

to soil ,magnesiumwas Sprayed in form of MgSO4.7H2O (9.76%Mg)in the following concentrations, 0,1,2,3g/l.

AFactorial experiment in Randomized Complete Block Design (RCBD) with three replicates .K18 exceed significantly in the average increase of main length stem, branches number ,leaves number ,while Khodeiri variety exceed in Leaf aera; and the two cultivars showed no difference in stem diameter, percentage of dry matter,N and P in leaves, while the higher percent of K detected in K18 Variety.Marine fert with 2 or 4 ml/ l.

caused significant effect in vegetative growth features where the average increase in 2 ml/ l.

were(18.7%) in main stem length , (30.9% )in branches number,(19.5 %) in main stem diameter, (37.6 %)in number of leaves and (24.9% )in leaf area with no significant different between 2 ml/l.

and 4ml/l.

effects on all these features .Magnesium with 1g/l.

Conentraction had significant effect on vegetative growth features, where average increase were(13.43% )in main stem length , (18.8% )in branches number , (23.9%) in main stem diameter, (27.2% )in leave number and (18.1%) in leaf area.

While the other concentrations did not affect these features.

1g/l.

magnesium and marine fert increased significantly the percentage of dry matter ,N,P and K in leaves.The interaction between marine fert and magnesium resulted a significant effect on all features and the best results were found when using 2 or 4m/l.

marine fert with 1 g /l.Mg which resulted in improving vegetative growth and N,P,K content of leaves.