Nada ALAmeir*⁽¹⁾ and Mohammad ALSheikh⁽²⁾

(1). Horticulture Department, Faculty of Agriculture, Alfurat University, Deir Al-Zour, Syria.

(2). Department of Soil and Land Reclamation, Faculty of Agriculture, Alfurat University, Deir Al-Zour, Syria.

 (*Corresponding author: Dr. Nada ALAmeir. E-Mail: mmnndd9074@gmail.com).

Received: 21/09/2022                          Accepted: 12/12/2022

Abstract: 

The research was carried out during the 2022 in a private farm in Deir El-Zawr Governorate on watermelon plants (Citrullus lanatus L.) Hybrid(Joud F₁) in order to study the effect of each of the foliar spraying with dry bread yeast using several concentrations, including (0, 2, 4, and 6) g/ l, at a rate of three sprays, the first when the second true leaf appears, the second at the beginning of the fruit set, and the third in two weeks before maturity, and the distances between one plant and another (1.5, 2 and 2.5) m in the growth and yield of watermelon. The results showed that spraying bread yeast at a concentration of (6) g/L was significantly superior to the rest of the spraying treatments and control in the number of leaves, leaf area, chlorophyll content of leaves, weight of the fruit and productivity. The distance of 2 m between the plants gave the highest values in all the studied characteristics except for the yield, which achieved its highest value (58.66 tons/ hectare) was at a distance of (1.5) m. The interaction of spraying and distances also had a significant effect in all studied characteristics, so the best values were when using the concentration (6) g/ l with a distance of (2) m except for the yield, which was significantly increased at the distance of (1.5) m and the concentration (6) g/ l.

Key Words: Watermelon, Saccharomyces cerevisiae, spacing, yield.

Full paper in Arabic: pdf