Sami Hennawi (1) Adnan Skaker (1) Talaat Amer (1) and Samer Kiwan*(1)
(1). Sweida Agricultural Research Center, General Commission for Scientific Agriculture Research (GCSAR), Damasucs, Syria.
(*Corresponding author: Dr. Samer Kiwan. Email: samer.kiwan@yahoo.com).
Received: 17/04/2018 Accepted: 30/05/2018
Abstract
This research was carried out at the Agricultural Scientific Research Center in Sweida, GCSAR during the growing seasons of 2015 and 2016 to study the effect of number of foliar sprays of boron on the productivity and qualitative characters of Golden delicious apple cultivar. Boric acid foliar spray (1 g.l-1) was added for once, twice or three times besides the control (without addition). The results showed that, the average of productivity increased significantly when spraying three times of the boric acid, in the two seasons (69.35 kg/tree and 125.1 kg/tree respectively), while the average yield in the control treatment was the lowest compared to other treatments (43.53 kg/tree and 59.73 kg/tree respectively). The average grading of the fruit were; excellent, first, second, and third under the addition of foliar spray for three times with boric acid and soil fertilizer addition (6.06%, 60.74, 32.54%, and 0.66% respectively), but the grading percentage under the addition of foliar spray for twice with the soil addition of fertilizer were 4.56%, 57% , 37.61% and 0.83%, respectively, while under the control treatment the grading percentages were 0.79%, 26.23%, 57.76% and 15.22%, respectively. It was concluded that the application of these factors contributed in the increase of the average productivity and improved the quality of the fruits.
Keywords: Apples, Golden delicious, Boric acid, Productivity, Foliar spray.
Full Paper in Arabic: PDF