Nasr Sheik Suleiman(1) , Jamal Al-Ahmad(2) and Fatima Jaffar(1)*
(1). Department of Horticulture, Faculty of Agriculture Engineering, Tishreen University, Lattakia, Syria
(2). Department of Plant Protection, Faculty of Agriculture Engineering, AL-Furat University, Lattakia, Syria
(*Corresponding author: Fatima Jaffar. E-mail: fatimagaffar2000@gmail.com) .
Received: 8/08/2023 Accepted: 8/11/2023
Abstract:
The research aimed to study the effect of foliar spray with seaweed extract(Macrocystis, Ascophyllum, Sargassum, and some amino acid) on some fruiting and productivity indicators of cucumber “Prince” hybrid plant and reduce the incidence of downy mildew disease. The research was carried out during the spring season of 2020 on Al-shire village, Lattakia governorate, the experiment was designed as randomized complete block was with four replicates per treatment, and 10 plants in each replicate. The experiment included three treatments the control and the plants being sprayed with “SPRINT ALGA” extract by two concentration(1and 2)ml/l.The results showed that foliar spray with the studied extract 2ml/l achieved significant difference as compared with other treatments in term of fruiting and productivity indicators, it led to a highest values of number of female flowers(78)flower/plant, percentage of inflorescences (45.77%), Number of fruits(35)fruit/plant, the yield of plant(4,48)kg/m2.While foliar spray with studied extract 1ml/l and 2ml/l had the same effective in reducing the incidence and severity of downy mildew disease on cucumber plant, where spray with this extract recorded the lowest incidence and severity of fungal disease infection during the third reading that is 44 day after the first spray, where it reached when spraying with sprint alga 1ml/l (%14.25),(%6.87) and reached when spraying with concentration 2ml/l (%12.8),(%6.07), respectively.
Keywords: Cucumber sativus L. , Seaweed extract , “SPRINT ALGA“, fruiting indicators, productivity, Downy mildew.
Full paper in Arabic: pdf