Beneficial effect of organic liquid fertilizer on growth of some olive seedling cultivars

Abstract

This study was carried out in shade house of National Research Center, Dokki, Cairo, Egypt on the olive seedlings of Picual, Manzanillo, Koratina, Koroneiki and Meraki cultivars to study the influence of application time intervals of pigeon manure tea as liquid organic fertilizer. The seedlings were planted in black polyethylene bags with 30 cm diameter fooled 10 kg washed sand mixed very good with peat moos (2:1), Olive seedlings were irrigated twice weekly. Seedlings were fertilized with recommended dose (0.5gm/seedling/twice/week (control)) of conventional fertilizers which add as crystalon (20:20:20 NPK). Pigeon manure tea used as organic liquid fertilizer applied as soil application at three periods intervals (15, 30 and 45 day) during growing season (March until September). In general, the application of pigeon manure tea as soil application every 45 days gave the best results for increasing all vegetative growth such as plant height, shoots number, trunk diameter, Shoot fresh, dry weight, root numbers, length, root fresh and dry weight, as well as, the application of pigeon manure tea as soil application every 30 days gave the maximum nitrogen, potassium and phosphorus contents in leaves.