Response of Olive Trees to Spraying with Salicylic Acid, Thidiazuron, and Marine Algae Extract to Mineral Elements in the Leaves and Some Fruit Characteristics

Abstract

spraying with salicylic acid (S) and growth regulator TDZ (T). Besides, marine algae extract with nanotechnology (N) on mineral elements in the leaves and some characteristics of olive fruits Khestawi variety. The experiment included three factors, where the spraying with three levels of salicylic acid (200, 100, 0 mg L ) and second factor is spraying with three levels of TDZ growth regulator (6,3,0 mg L ), the third factor, -1 -1 spraying with marine algae extract at a concentration of (2,1,0 ml L ). The results showed the superiority of S2 content of N, P and K in the leaf -1 and the fruits dry weight. The T was superior in phosphorous content the leaf (0.1474%), potassium content (0.7630%) and the fruits dry 2 weight of (21.57 g). Furthermore, spraying algae extract solution with a concentration of 2 mg L was superior in the percentage of potassium -1 (0.7685%), the fruit length (24.167 mm), and the percentage of fruits dry weight (21.84%), while the treatment 1 ml L for algae extract solution -1 was superior in the percentage of nitrogen (1.7211%), phosphorus (0.1437%), and the fruit diameter (17.80 mm). The combined effect of study factors showed an effect on most of the studied traits.